SECTION

I. II.

III. IV. v.

VI. VII.

VIII.

January, 1979 C-79-50-1212-7

An American-Standard Company

SERVICE MANUAL5815

ALUMINUM CROSSING GATE

MODEL AL-70

INSTALLATION AND MAINTENANCE

* * * * * * * * * * *

CONTENTS

PAGE

INTRODUCTION 2 DESCRIPTION 2 OPERATION 5 INSTALLATION PROCEDURE 5 EQUIPMENT ADJUSTMENT AND CHECKOUT PROCEDURE 9 MAINTENANCE PROCEDURES 11 LUBRICATI.ON 11 PARTS LIST 12

UNION SWITCH & SIGNAL DIVISION WESTINGHOUSE AIR BRAKE COMPANY

Swissvale, PA 15218

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I I INTRODUCTION

The WABCO Model AL-70 Aluminum Crossing Gate developed by WABCO Union Switch & Signal Division, is designed to provide· automatic gate arm protection at grade crossings where 16 to 32 feet gate arms are required. The original arm was 16 to 26 feet. A second arm extendible from 27 to 32 feet is now avail­able. The latter requires additional counterweights and a heavier shear pin.

A unique and economical feature of this Model At-70Alu­minum Crossing Gate is that it can be applied to existing AAR standard automatic flashing light signals with 4 or 5 inch masts.

·I I I DES CR I PTI ON

Basically, the Model AL-70 Aluminum· Crossing Gate con­sists of two sub-assemblies: the operating mechanism which is housed .in an aluminum sheet metal box and the extruded alumi­num telescoping gate arm.

The wiring diagram in Figure 1 is provided for use in making wire connections in the mechanism housing, crossarm junction box, and junction box base.

A. OPERATING MECHANISM ASSEMBLY (FIGURE 4)

The operating mechanism assembly consists of the follow­ing: A DC electric motor with a 130:1 gear reduction train, which requires a nominal 12 volt power supply; a hold clear device, which is located on the motor armature shaft; a motor control relay, located next to the terminal board; and a cir­cuit controller assembly,· which has six contacts operated by a cam as illustrated in Figure 4. Three circuit controller contacts are wired for mechanism control and three contacts are available for controlling external circuits such as the bell and the clear position repeater relay. Contacts lB-lC and 3B-3C are adjustable from 100 to 900.

Rubber shock absorbers with adjustable stop bolts are provided as shown in Figure 4. The stop bolts are used to position the gate arm in the horizontal position and to absorb shock of the arm support moving rapidly to the vertical posi­tion in the event of a vehicle knocking off the gate arm.

One end of the splined main shaft extends out of the mechanism for mounting the high strength steel arm support.

Total weight of the operating mechanism without the gate arm assembly, is approximately 180 lbs.

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I I INTRODUCTION

The WABCO Model AL-70 Aluminum. Crossing Gate developedby WABCO Union Switch & Signal Division, is designed to provide· automatic gate arm protection at grade crossings where 16 to 32 feet gate arms are required. The original arm was 16 to 26 feet. A second arm extendible from 27 to 32 feet is now avail­able. The latter requires additional counterweights and a heavier shear pin.

A unique and economical feature of this Model AL-70Alu­minum. Crossing Gate is that it can be applied to existing AAR standard automatic flashing light signals with 4 or 5 inch masts.

·II, DES CR I PTI ON

Basically, the Model AL-70 Aluminum. Crossing Gate con­sists of two sub-assemblies: the operating mechanism which is housed .in an aluminum. sheet metal box and the extruded alumi­num. telescoping gate arm.

The wiring diagram in Figure 1 is provided for use in making wire connections in the mechanism housing, crossarm junction box, and junction box base.

A. OPERATING MECHANISM ASSEMBLY (FIGURE 4)

The operating mechanism assembly consists of the follow­ing: A DC electric motor with a 130:1 gear reduction train, which requires a nominal 12 volt power supply; a hold clear device, which is located on the motor armature shaft; a motor control relay, located next to the terminal board; and a cir­cuit controller assembly,. which has six contacts operated by a cam as illustrated in Figure 4. Three circuit controller contacts are wired for mechanism control and three contacts are available for controlling external circuits such as the bell and the clear position repeater relay. Contacts lB-lC and 3B-3C are adjustable from 100 to goo.

Rubber shock absorbers with adjustable stop bolts are provided as shown in Figure 4. The stop bolts are used to position the gate arm in the horizontal position and to absorb shock of the arm support moving rapidly to the vertical posi­tion in the event of a vehicle knocking off the gate arm.

One end of the splined main shaft extends out of the mechanism for mounting the high strength steel arm support.

Total weight of the operating mechanism without the gate arm assembly, is approximately 180 lbs.

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Ul CX)

..... U1

l't:l . . w

FLASHING LIGHT

UNITS

(:'l BELL ,.-..., ,.,., i r -<'y- ..,--'5r -,

J I I I : t-'Sr-+4-t . L I J

11 ,----­I I I I I I I I I I I I I I I IU L -+

j 1 I r

I I I I I I I I I I I I

~Ta1of11 L ____ ...J

I I I CROSSARM I I I JUNCTION I I I BOX

I I TERMINALS

I I I I I I I I I. I I I I I I I I I I I I I I I I I I I I I L I L _____ _

r r;::

15 AMP SLO ·BLO FUSE •..e----:.. DIODE

------., I I

I I I I

------ I MECHANisM - - - - - - - - - - .J

GATE ARM LIGHTS

LIGHT LIGHT LIGHT •c• •e• 'A'

CONNECTOR

LEGEND:

---WIRING REQUIRED FOR GATE.

TIP LIGHT (CONTINUOSLY LIGHTED WHEN OPERATING)

PLUG CONNECTORS LOCATED INSIDE GATE ARM

- - - WIRING REQUIRED FOR FLASHING LIGHT SIGNAL AND BELL, WHEN USED.

L-------

I l I I CONTACT CONTACT CLOSED CONTACT FUNCTION

L--------, r I L

II I -1 JUNCTION BOX BASE ~ f/ TERMINAL ARRANGEMENT

-t - - ...J MOTOR DOWN I I MOTOR UP

I I I I XGP I I I I XGP I I I I =1t6 Nl2 I I I L.. _____ BELL CONTROL

I I L ___ !_9_ ~ - - - -IL ____ =lt9 E ____ _

L __ -- #9_EB_ ---

UNDERGROUND CA8LE TO RELAY CASE

(ADJUSTABLE) IB-IC

(ADJUSTABLE) 3B-3C

48-40

5B-5C

6B-6C

7B-7C

o0 TO 89° UP TO OPEN MOTOR UP CIRCUIT 83° TO o 0 DOWN (ADJ FROM 70° TO 90°)

86° TO 930 TO INDICATE VERTICAL (90°) POSITION, WHEN REQUIRED (ADJ FROM 70° TO 90°)

0°-10° TO INDICATE HORIZONTAL to0l POSITION, WHEN REQUIRED

0°-100 TO CONTROL MOTOR DYNAMIC BRAKING AS GATE ARM APPROACHES HORIZONTAL

s 0 -93° TO OPEN EXTERNAL CIRCUIT WHEN ARM IS HORIZONTAL, PER REQUIREMENTS

46°- 93° TO OPEN MOTOR DOWN CIRCUIT

Figure 1. Typical Wiring Diagram for AL-70 Gate with Flashing Light Signals ~I

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B. GATE ARM ASSEMBLY (FIGURE 3)

The telescoping gate arm consists of three sections of extruded aluminum. When the 26 foot gate configuration is used, the length of the gate arm may be adjusted from 26 to 21 feet by telescoping the second and third (tip) sections per data shown in Table 1, Figure 3. Arm lengths can be further reduced from 21 to 16 feet by cutting off inner portions of the second and third sections as shown in Table 1, Figure 3.

When a 32 foot gate configuration is used, the length of the gate arm may be adjusted from 32 to 27 feet by telescoping the second and third (tip) sections per data shown in Table 1, Figure 3.

To warn oncoming vehicular traffic, three 10 volt weather­proof bi-directional lamps are mounted on the arm. In addition, the arm is equipped with alternate red and white reflective "Scotchlite" sheeting.

The total weight of the assembled gate arm sections, with three lights, is approximately 30 lbs.

The counterweights are adjustable to provide proper horizontal torque for arms varying from 16 to 26 feet long, and from 27 to 32 feet long. Two additional 20 lb. counter­weights are required for the 32 foot gates.

C. TECHNICAL DATA

When planning a grade crossing installation, consideration must be given to WIRE SIZE AND BATTERY. Sizes of wire used for the motor circuit should be calculated to ensure that there is not more than 0.1 ohm resistance between the battery and mechanism terminals.

The following wire sizes are recommended:

WIRE LENGTH FROM RELAY CASE SIZE OF SOFT DRAWN TO JUNCTION BOX BASE TERMINALS COPPER WIRE TO USE

Up to 60 feet (120 feet of wire) No. 9 AWG From 60 to 120 feet (240 feet No. 6 AWG of wire)

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B. GATE ARM ASSEMBLY (FIGURE 3)

The telescoping gate arm consists of three sections of extruded aluminum. When the 26 foot gate configuration is used, the length of the gate arm may be adjusted from 26 to 21 feet by telescoping the second and third (tip) sections per data shown in Table 1, Figure 3. Arm lengths can be further reduced from 21 to 16 feet by cutting off inner portions of the second and third sections as shown in Table 1, Figure 3.

When a 32 foot gate configuration is used, the length of the gate arm may be adjusted from 32 to 27 feet by telescoping the second and third (tip) sections per data shown in Table 1, Figure 3.

To warn oncoming vehicular traffic, three 10 volt weather­proof bi-directional lamps are mounted on the arm. In addition, the arm is equipped with alternate red and white reflective "Scotchlite" sheeting.

The total weight of the assembled gate arm sections, with three lights, is approximately 30 lbs.

The counterweights are adjustable to provide proper horizontal torque for arms varying from 16 to 26 feet long, and from 27 to 32 feet long. Two additional 20 lb. counter­weights are required for the 32 foot gates.

C. TECHNICAL DATA

When planning a grade crossing installation, consideration must be given to WIRE SIZE AND BATTERY. Sizes of wire used for the motor circuit should be calculated to ensure that there is not more than 0.1 ohm resistance between the battery and mechanism terminals.

The following wire sizes are recommended:

WIRE LENGTH FROM RELAY CASE SIZE OF SOFT DRAWN TO JUNCTION BOX BASE TERMINALS COPPER WIRE TO USE

Up to 60 feet (120 feet of wire) No. 9 AWG From 60 to 120 feet (240 feet No. 6 AWG of wire)

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To suit the power requirements, the following battery is recommended:

NUMBER OF CELLS

Lead Nickel Iron Nickel Cadmium

6 9 9

III, OPERATION

The gate arm is normally held in the clear position with the hold clear energized. When the gate mechanism control cir­cuits are actuated for the descending movement of the gate arm, the hold clear is deenergized. Simultaneously, the motor down circuit is energized through a limiting resistor with themotor control relay deenergized. The motor drives the gate arm down from 900 to 450. Further movement of the gate arm towards the horizontal position is obtained by gravity with the motor act­ing as a generator. The motor discharges its current through the adjustable snubbing resistor; and in the final 100 descent of the gate arm travel, a direct shunt (with No. 5 contact closed) is applied across the motor to increase the braking action and bring the arm to a cushioned stop.

Descending time of the gate arm may be varied by adjust­ment of the snubbing resistor. The torque of the arm (with counterweights) is designed so the arm will descend from the vertical to the horizontal position by gravity in case there is a lack of power for motor drive down.

The gate arm will return to the clear position when the motor up circuit is energized. When the arm is in the clear position, the motor drive circuit is opened and the hold clear is energized through the deenergized motor control relay.

The two piece cam has an adjustable feature which can be adjusted to open the motor up circuit from 7QO to 900. See Section V "Equipment Adjustment and Checkout Procedure".

IV, INSTALLATION PROCEDURE

The following installation procedure is recommended for erecting the AL-70 Aluminum Crossing Gate signals. At loca­tions where flashing light signals are existing, begin with instructions under "Operating Mechanism Assembly".

A. MAST AND BASE

Refer to Figure 2 for erecting mast and base.

1. Check the foundation and bolts for proper alignment. Generally the top of the foundation is six inches above the crown of the road.

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2. Mount junction box base and mast on foundation. Ensure that the junction box base and opening in the upper part of the mast (for flashing light signal junction box and crossarm) are in the proper position with relation to the roadway. See Fig­ure 2A and 2B.

3. Install flashing light junction box crossarm and flash­ing light units.

4. Mount signs at the proper height as shown in Figure 2.

s. Install bell or pipe cap on top of the mast. If a bell is required, it should be mounted with the gong parallel with the roadway.

6. Make proper wiring connections (for.flashing light units and bell) between crossarm junction box and junction box base as shown in Figure 1 (Typical Wiring Diagram).

B. OPERATING MECHANISM ASSEMBLY

l. For an existing mast,cut a hole two inches in diame­ter, 36 inches above the top of the foundation and 65° off center as shown in Figure 2C. (New masts are pre-drilled at the factory.}

2. Attach two clamps to the mast approximately 57 inches above the crown of the highway. This will permit the gate mechanism to be turned so that gate arm installations can be performed off the roadway. Clamp the gate mechanism (1) Figure 1 (without the gate arm support} to the mast on the side away from the roadway so that the center of the splined shaft is 65-1/2 inches above the top of the foundation. The horizontal center of the gate arm should then be about 42 inches above the crown of the highway. This is with the top of the foundation six inches above the crown of the highway as indicated in Figure 2.

NOTE

When assembling mechanism to a 5" mast, discard four 3/4 - 10 x 7-1/2 in. lg. bolts and use four 3/4 - 10 x 8-1/2 in. lg. bolts (J046752).

3. Before mounting the flexible conduit to the mechanism and mast, determine the length and number of wires that are required for making connections between the mechanism and the junction box base. See Figure 1 (Typical Wiring Diagram).

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2. Mount junction box base and mast on foundation. Ensure that the· junction box base and opening in the upper part of the mast (for flashing light signal junction box and crossarm) are in the proper position with relation to the roadway. See Fig­ure 2A and 2B.

3. Install flashing light junction box crossarm and flash­ing light units.

4. Mount signs at the proper height as shown in Figure 2.

5. Install bell or pipe cap on top of the mast. If a bell is required, it should be mounted with the gong parallel with the roadway.

6. Make proper wiring connections (for.flashing light units and bell} between crossarm junction box and junction box base as shown in Figure 1 (Typical Wiring Diagram).

B. OPERATING MECHANISM ASSEMBLY

1. For an existing mast,cut a hole two inches in diame­ter, 36 inches above the top of the foundation and 65° off center as shown in Figure 2C. (New masts are pre-drilled at the factory.)

2. Attach two clamps to the mast approximately 57 inches above the crown of the highway. This will permit the gate mechanism to be turned so that gate arm installations can be performed off the roadway. Clamp the gate mechanism (1) Figure 1 (without the gate arm support) to the mast on the side away from the roadway so that the center of the splined shaft is 65-1/2 inches above the top of the foundation. The horizontal center of the gate arm should then be about 42 inches above the crown of the highway. This is with the top of the foundation six inches above the crown of the highway as indicated in Figure 2.

NOTE

When assembling mechanism to a 5" mast, discard four 3/4 - 10 x 7-1/2 in. lg. bolts and use four 3/4 - 10 x 8-1/2 in. lg. bolts (J046752).

3. Before mounting the flexible conduit to the mechanism and mast, determine the length and number of wires that are required for making connections between the mechanism and the junction box base. See Figure 1 {Typical Wiring Diagram).

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Then completely as'semble the flexible conduit (4) with connector (5), elbow (6), and pipe clamp (7), and insert the

·wires in the conduit at the approximate position they wfll be when installation is complete.

4. Place conduit nut {62) and box connector (61) in posi­tion in mechanism housing as shown in Figure 4. Insert wires into the mechanism housing and connect conduit to housing.

5. Then insert wires into the mast (2" hole below mech­anism) and pull out the free ends at the junction box base (allow plenty of slack) and leave pipe clamp(7) disconnected temporarily.

NOTE

Pipe clamp (7) may be attached to the mast if there is sufficient length, depending on how far the mechanism is turned off the roadway.

6· Connect both ends of the wires in accordance with Figure l (Typical Wiring Diagram).

The standard half junction box base which has 12 ter­minals mounted inside is adequate to handle the control cir­cuits, gate arm lights and the signal flashing lights. However, in order to provide sufficient terminal space, som~ of the jumper straps will have to be removed when the light weight gate .is installed on an existing signal mast.

C. GATE ARM ASSEMBLY

Refer to Figure 3 for assembling gate arm.

1. Turn the main shaft clockwise to the position it as­sumes when the gate arm is in the horizontal position. This condition exists when the sector gear (14, Figure 4) is in con­tact with the upper stop bolt (90).

NOTE

To lock the mechanism in position temporarily, insert a bolt or tool through one of the 3/8 inch holes in the gear as shown in Figure 4. This will hold the mechanism in the horizontal position to aid gate arm installation.

2. Apply the gate arm support (14) in the horizontal position to the splined shaft of the mechanism. (Remove ship­ping separator from splined shaft.)

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3. Refer to Table 1 for proper.telescoping of the arm for desired length taking care not to damage gate arm light wires.

After the desired length of the arm has been deter­mined, lay the three aluminum arm sections on a flat surface and assemble per Figure 3. Insert proper bolts in 1st and 2nd sections (per section "X-X" and "Y-Y") as indicated and tighten securely.

4. Place the assembled arm in the channel section of the gate arm support (14). Secure the arm with the proper shear pin (11) per section "W-W". For a 26 ft. arm use Pin .205 (stamped on bolt head) and for a 32 ft. arm use Pin .220.

NOTE

Tighten nut (12) on shear pin BY HAND to prevent damage to the pin and in­sert cotter key (13).

Adjust support plate (Figure 30) so that it bears against the end of the arm, then tighten support plate bolts. Adjust two bolts on back side of the support by hand to take up side play and align arm properly in the arm support channel. Hand tighten the remaining four channel bolts to take up slack between the arm and support channel and then secure all six bolts by tightening lock nuts .. Hold the bolt heads with a wrench to prevent the bolts from turning while tightening lock nuts.

CAUTION Excessive tightening of channel bolts may damage or· distort the arm support and change the shearing characteristics.

5. The lens for each gate arm light must be removed to insert bulbs which are packed separately for shipment to pre­vent breakage. This can be accomplished by removing three screws from either side of the lamp assembly. See illustration in Figure 3C.

6. Insert the plug on the end of the arm wiring harness into the receptacle attached to the support plate as shown in Figure 3D. Then loop the 3-conductor cable between the mast and mechanism box, through the cable grip (7) shown in Figure 4, and into the mechanism box.

Connect the 3-conductor cable (wires lA, 2A, and 3A) to the terminal board inside housing as shown in Figure 1 (Typical Wiring Diagram).

7. Apply the proper counterweight according to the arm length as shown in Figure 3, Table 2.

· 8. Rotate the mechanism on the mast so the gate arm is pr~perly_positioned over the roadway before raising the arm.

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3. Refer to Table 1 for proper telescoping of the arm for desired length taking care not to damage gate arm light wires.

After the desired length of the arm has been deter­mined, lay the three aluminum arm sections on a flat surface and assemble per Figure 3. Insert proper bolts in 1st and 2nd sections (per section "X-X" and "Y-Y") as indicated and tighten securely.

4. Place the assembled arm in the channel section of the gate arm support (14). Secure the arm with the proper shear pin (11) per section "W-W". For a 26 ft. arm use Pin .205 (stamped on bolt head) and for a 32 ft. arm use Pin .220.

NOTE

Tighten nut (12) on shear pin BY HAND to prevent damage to the pin and in­sert cotter key (13).

Adjust support plate (Figure 3D) so that it bears against the end of the arm, then tighten support plate bolts. Adjust two bolts on back side of the support by hand to take up side play and align arm properly in the arm support channel. Hand tighten the remaining four channel bolts to take up slack between the arm and support channel and then secure all six bolts by tightening lock nuts •. Hold the bolt heads with a wrench to prevent the bolts from turning while tightening lock nuts.

CAUTION Excessive tightening of channel bolts may damage or-distort the arm support and change the shearing characteristics.

5. The lens for each gate arm light must be removed to insert bulbs which are packed separately for shipment to pre­vent breakage. This can be accomplished by removing three screws from either side of the lamp assembly. See illustration in Figure 3C.

6. Insert the plug on the end of the arm wiring harness into the receptacle attached to the support plate as shown in Figure 3D. Then loop the 3-conductor cable between the mast and mechanism box, through the cable grip (7) shown in Figure 4, and into the mechanism box.

Connect the 3-conductor cable (wires lA, 2A, and 3A) to the terminal board inside housing as shown in Figure 1 (Typical Wiring Diagram).

7. Apply the proper counterweight according to the arm length as shown in Figure 3, Table 2.

8. Rotate the mechanism on the mast so the gate arm is _properly_positioned over the roadway before raising the arm.

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NOTE

Before continuing with step 9, remove the temporary lock from the gear that was suggested in step 1 to hold the mechanism in the horizontal position.

9. Adjust the horizontal arm position by the following procedure. See Figure 4.

~

a. Loosen the lock nut and turn the slotted screw on the bumper stop assembly (114). A screwdriver can be used to make this adjustment.

b. After the ar:m is in the desired position, tighten the lock nut firmly.

The stop bolt (32) on the lower bumper stop is factory adjusted to clear the sector gear with arm in the clear posi­tion.

10. Fasten pipe clamp (7) (Figure 2) to mast (insert ex­cess wire slack into mast).

11. Mount vents (8) on housing with the opening facing down (see Figure 4).

V, EQUIPMENT ADJUSTMENT AND CHECKOUT PROCEDURE

The following adjustments and checks should be performed to ensure proper operation of the equipment.

1. The adjustable cam is set at the factory to release the motor up circuit when the gate arm is in the vertical posi­tion (90°).

If it is desired to stop the gate arm between 70° to 90°, perform the following adjustment. See adjustable cam assembly illustrated in Figure 4.

a. Move the gate arm to the horizontal position.

b. Loosen the two'slotted bolts .. (108) that hold the adjustable portion of the cam (102) to the fixed cam (103).

c. Rotate the adjustable cam down to the desired posi­tion and tighten the slotted bolts.

With the adjustable cam rotated to maximum down position, the motor up circuit will release when the gate arm is at a 70° angle.

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2. Check the descending and clearing time of the armwith a stop watch. The normal descending time should be between 8 and 15 seconds. This time can be varied by means of adjusting the snubbing resistor (65).

A 26 foot gate arm in the horizontal position should clear within 9 to 11 seconds. Motor current should read ap­proximately 10 amperes at the end of the stroke with a nominal 12 volt power supply. A 32 foot gate arm in the horizontal position should clear in approximately 13 seconds. Motor cur­rent should read approximately 12 amperes with a nominal 12 volt power supply. Higher input voltages will decrease the time it takes for the gate to clear.

IMPORTANT

To provide a good electrical connection for the snub circuit, care should be taken to see that the slide contact on the snubbing resistor is bearing on the winding with firm pressure and that the lock nut is tightened to hold the slide securely in place. Also check other termination points in the circuit.

The hold clear armature air gap should be set with a 0.010 inch thick gage with the motor armature end play taken up in the direction away from the hold clear. This adjustment can be made with an Allen (Hex.) wrench.

3. Check to ensure that the circuit controller, motor control relay contacts, and hold clear armature are free from oil, grease, and dirt particles.

4. The outer contact spring mounted on terminal 1 has two parts. The smaller part is a stop spring to limit the travel of the outer spring. See Figure 4. There must be an air gap of 0.020 inch between the two parts when this contact is made with the inner contact spring riding the earn. This adjustment is made by bending the contact spring {68) just be­low the terminal board.

5. When the gate mechanism is in operation, check to see that the flashing light units on the mast and gate arm are all flashing alternately and properly. If any of the gate arm lights are not functioning, check the plug connector located inside the gate arm by removing the respective access plate below the light. See Figure 3C.

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2. Check the descending and clearing time of the armwith a stop watch. The normal descending time should be between 8 and 15 seconds. This time can be varied by means of adjusting the snubbing resistor ,{65).

A 26 foot gate arm in the horizontal position should clear within 9 to 11 seconds. Motor current should read ap­proximately 10 amperes at the end of the stroke with a nominal 12 volt power supply. A 32 foot gate arm in the horizontal position should clear in approximately 13 seconds. Motor cur­rent should read approximately 12 amperes with a nominal 12 volt power supply. Higher input voltages will decrease the time it takes for the gate to clear.

IMPORTANT

To provide a good electrical connection for the snub circuit, care should be taken to see that the slide contact on the snubbing resistor is bearing on the winding with firm pressure and that the lock nut is tightened to hold the slide securely in place. Also check other termination points in the circuit.

The hold clear armature air gap should be set with a 0.010 inch thick gage with the motor armature end play taken up in the direction away from the hold clear. This adjustment can be made with an Allen (Hex.) wrench.

3. Check to ensure that the circuit controller, motor control relay contacts, and hold clear armature are free from oil, grease, and dirt particles.

4. The outer contact spring mounted on terminal l has two parts. The smaller part is a stop spring to limit the travel of the outer spring. See Figure 4. There must be an air gap of 0.020 inch between the two parts when this contact is made with the inner contact spring riding the cam. This adjustment is made by bending the contact spring {68) just be­low the terminal board.

5. When the gate mechanism is in operation, check to see that the flashing light units on the mast and gate arm are all flashing alternately and properly. If any of the gate arm lights are not functioning, check the plug connector located inside the gate arm by removing the respective access plate below the light. See Figure 3C.

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VI, MAHlTENAMCE PROCEDURE

Conunutator and brushes should be checked periodically and cleaned with a dry cloth. Brushes are pre-adjusted at the factory. However, worn brushes should be replaced when the flat spring bearing against the upper end of the brush comes within 1/16 inch of resting on the brush holder.

Circuit controller contacts should be checked at regular intervals for proper opening. All contact openings are factory adjusted to have a 3 to 3-1/2 pound force between the nylon cam follower and cam and to have a. 1-1/2 to 1-3/4 pound closed contact pressure. This adjustment will provide a minimum contact opening of 1/16" and a maximum wipe of 1/64 inch when gate arm is in the clear position. With gate arm in the clear position, the force to move the nylon cam follower away from the cam rocker arm should be approximately 1/4 pound. This force should be measured by pulling the spring adjacent to the top of the cam follower. See Fi.gure 4.

VII. LUBRICATION Mechanism gear train and main shaft bearings are

pre-lubricated and double sealed at the factory.

The gear teeth and circuit controller cam surface are to be given a light brush coat of lubricant. Texaco Regal AFB2 (MIL-G-3278) grease is recommended for all-weather gear lubrication. The time interval for lubricating the gears depends on usage and should be determined by the customer.

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VIII. PARTS LIST

The following parts list for the AL-70 Crossing Gate is keyed to Figure 2. Pa~ts apply to all gates except as noted.

ITEH

1 2

3

4 5 6 7

8

9

10

11

12 13 14 15 16 17 18 19 20

21 22 23 24 25 26 27

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DESCRIPTION

Mechanism, Crossing Gate Mast, 4" pipe - steel, complete with base (9-1/2" x 9-1/2") Mast, 4 11 pipe - aluminum, complete with base (11-11/16" x 11-11/16"} Conduit, 1-1/2 11 flex. Connector, 1-1/2" box Elbow, 1-1/2" x 45° street (galv) Clamp, with 1-1/2" pipe tap com­plete (galv.) Signal Unit, with red plastic 30°/15° roundel Lamp, lOV, 18W, S-11, CCG, SC base Lamp, lOV, 25W, S-11, CCG, SC base

WABCO Part#

N451070-0101 N434115

N434974

M320858-019 J700746 J032596 J033182

N394817

J071463

J071574

*Sign, Number Tracks (Spec. "No.'! X392929 if ordered Sign, "Railroad Crossing" ( 4" Mast) Hood Background U-Bol t, 5/8" Nut, 5/8 Hex. Stl. Cad. Pl. Washer, 5/8 Stl. Plate Cad. Pl. Cap, pipe Clamp, mast Washer, Lock Bolt, Sq. Hd. 3/4-10 x 7-1/2 Lg. ** Nut, Hex. Hd. *Foundation Bolt, l" x 24" *Nut, 1" Hex. Stl. Cad. Pl. *Washer, l" Stl. Plate Cad. Pl. *Bell *Adapter, for bell Arm, cross *Sign, "STOP ON RED SIGNAL" complete (not shown)

*Optional items not incl. in assemblies A to N. Items reqd. to be ordered separately.

X392931-001

M390714 M390713 M392791 J048020 J047504 J026104 M433619 J047772 J046748

J048026 M254806 J048030 J047509 N074357 N082254 N390676 X451070-0309

**When applying gate to 5 inch mast, 4 bolts 3/4"-10 x 8-1/2", J046752 must be ordered separately.

r

WABCl:l ~

VIII. PARTS LIST

The following parts list for the AL-70 Crossing Gate is keyed to Figure 2. P~~ts apply to all gates except as noted.

ITEH

1 2

3

4 5 6 7

8

9

10

11

12 13 14 15 16 17 18 19 20

21 22 23 24 25 26 27

5815, p. 12

DESCRIPTION

Mechanism, Crossing Gate Mast, 4" pipe - steel, complete with base (9-1/2" x 9-1/2") Mast, 4" pipe - aluminum, complete with base (11-11/16" x 11-11/16") Conduit, 1-1/2" flex. Connector, 1-1/2" box Elbow, 1-1/2" x 45° street (galv) Clamp, with 1-1/2" pipe tap com­plete (galv.) Signal Unit, with red plastic 30°/15° roundel Lamp, lOV, 18W, S-11, CCG, SC base Lamp, lOV, 25W, s-11, CCG, SC base *Sign, Number Tracks (Spec. "No. '! if ordered Sign, "Railroad Crossing" (4" Mast) Hood Background U-Bolt, 5/8" Nut, 5/8 Hex. Stl. Cad. Pl. Washer, 5/8 Stl. Plate Cad. Pl. Cap, pipe Clamp, mast Washer, Lock Bolt, Sq. Hd. 3/4-10 x 7-1/2 Lg. ** Nut, Hex. Hd. *Foundation Bolt, 1" x 24" *Nut, 1" Hex. Stl. Cad. Pl. *Washer, l" Stl. Plate Cad. Pl. *Bell *Adapter, for bell Arm, cross *Sign, "STOP ON RED SIGNAL" complete (not shown)

*Optional items not incl. in assemblies A to N. Items reqd. to be ordered separately.

WABCO Part#

N451070-0101 N434115

N434974

M320858-019 J700746 J032596 J033182

N394817

J071463

J071574

X392929

X392931-001

M390714 M390713 M392791 J048020 J047504 J026104 M433619 J047772 J046748

J048026 M254806 J048030 J047509 N074357 N082254 N390676 X451070-0309

**When applying gate to 5 inch mast, 4 bolts 3/4"-10 x 8-1/2", J046752 must be ordered separately.

Following is a parts list for the Gate Arm Assembly. The index numbers in this list are keyed to Figure 3. Parts apply to all gates except as noted.

ITEH

A

Al

B

Bl

1

3

5

7

9

10

DESCRIPTION WABCO Part*

Gate Arm, three sections complet~ N451070-0201 with diagonal stripes of reflect-ive red and reflective white (26 ft.) Gate Arm, three sections with N451070-0202 diagonal stripes of reflective red and reflective white sheeting 26 ft. (For repair use only) Gate Arm, three sections complete N451070-0207 with diagonal stripes of reflect-ive red and reflective white. ( 32 Ft.) Gate Arm, three sections with N451070-0210 diagonal stripes of reflective red and reflective white. (32 Ft) fFor repair use only) Gate Arm, (First section only} N451071-3901 with diagonal stripes of reflect-ive red and reflective white (26 ft.} Gate Arm, (First section only} N451071-6203 with diagonal stripes of reflect-ive red and reflective white ( 32 ft.) Gate Arm, (Second section only) N451071-3902 with diagonai stripes of reflect-ive red and reflective white Gate Arm, (Third section only>ti~ N451071-3903 with diagonal stripes of reflect-ive red and reflective white Lamp, (Arm) Assembly Complete N451071-3801 (includes the following items}

• Red Lens • Bracket (fastened to arm} • Wire, #8 M-258-30 • Connector, 3 Pin, (includes

male and female end, UJ706864) • Tubing, #5 Black

Wiring Harness (accommodates 3 lamps), 26 ft. gate Wiring Harness (accomodates 3 lamps) 26 Ft. Gate (for repair use only) Wiring Harness (accomodates 3 lamps), 32 Ft. gate

N451071-3803

N451071-3804

N451070-3806

5815 I P• 13

WRBCC ~

ITEH

11

12 13 14

15 16 17 18 19 20

5815, p. 14

Parts List (continued) Reference Figure 3

DESCRIPTION

Shear Pin: 26 ft. gate 32 ft. gate

Nut, 3/8-16 Hex. aluminim Pin, 1/8 x l" Stl. Cotter T.P. Support, Gate Arm Complete (in­cludes items listed below), 26 ft. gate Support Gate Arm Complete (in­cludes items listed below), 32 ft. gate • Counterweight (approx. 100#) • Counterweight (approx. 20#)

(3 req'd for N451070-0209) • Screw, 3/8 x 6-1/2 Sq. Stl.

Cad. Pl. (N451070-0205 only) • Nut, 3/8-16 Hex. Cad. Pl. • Washer, 3/8 Stl. Lk. Cad. Pl. • Screw, 3/8 x 1-1/4 Hex. Stl.

Cad. Pl. • Plate, Support • Nut, 3/8-16 Hex. Stl. Jam Cad.

Pl. • Washer, 3/8 Stl. Pl. Cad. Pl. • Washer, 3/8 Stl. Lk. Cad. Pl. • Bolt, 3/8 x 1 Hex. Hd. Stl.

Cad. Pl. • Screw, 8-32 x 9/16 Rd. Hd. Br.

N.P. • Grommet • Screw, 10-32 x 3/8 Rd. Hd. Br.

N.P. • Washer, 10 Stl. Lk. T.P. • Cable, 3-cond. #16 wire • Clamp, Cable (outside support

channel) • Washer, #8 Lk. Ph. Bz. N.P. • Washer, #8 Br. Pl. N.P. • Plate, Cover • Clamp, Cable (inside support

channel) • -Screw, 3/8 x 8 Sq. Stl.

(N451070-0209 only) Screw, 3-8 x 3 Hex. Stl. Cad. Pl. Washer, 3/8 Stl. Pl. Cad. Pl. Washer, 3/8 Stl. Lk. Cad. Pl. Nut, 3/8-16 Hex. Cad. Pl. Spacer (Section X-X) Spacer (Section Y-Y)

WABCO Part#

N451071-4702 N451071-4703 J480220 J048620 N451070-0205

N451070-0209

J050065 J047502 J047779 J048009 M451071-l007 M451071-1008

WABCD ~

ITEH

11

12 13 14

15 16 17 18 19 20

5815, p. 14

Parts List (continued) Reference Figure 3

DESCRIPTION

Shear Pin: 26 ft. gate 32 ft. gate

Nut, 3/8-16 Hex. aluminim Pin, 1/8 x l" Stl. Cotter T.P. Support, Gate Arm Complete (in­cludes items listed below), 26 ft. gate

Support Gate Arm Complete (in­cludes items listed below), 32 ft. gate • Counterweight (approx. 100#) • Counterweight (approx. 20#)

(3 req'd for N451070-0209) • Screw, 3/8 x 6-1/2 Sq. Stl.

Cad. Pl. (N451070-0205 only) • Nut, 3/8-16 Hex. Cad. Pl. • Washer, 3/8 Stl. Lk. Cad. Pl. • Screw, 3/8 x 1-1/4 Hex. Stl.

Cad. Pl. • Plate, Support • Nut, 3/8-16 Hex. Stl. Jam Cad.

Pl. • Washer, 3/8 Stl. Pl. Cad. Pl. • Washer, 3/8 Stl. Lk. Cad. Pl. • Bolt, 3/8 x 1 Hex. Hd. Stl.

Cad. Pl. • Screw, 8-32 x 9/16 Rd. Hd. Br.

N.P. • Grommet • Screw, 10-32 x 3/8 Rd. Hd. Br.

N.P. • Washer, 10 Stl. Lk. T.P. • Cable, 3-cond. #16 wire • Clamp, Cable {outside support

channel) • Washer, #8 Lk. Ph. Bz. N.P. • Washer, #8 Br. Pl. N.P. • Plate, Cover • Clamp, Cable (inside support

channel) • ~crew, 3/8 x 8 Sq. Stl.

(N451070-0209 only) Screw, 3-8 x 3 Hex. Stl. Cad. Pl. Washer, 3/8 Stl. Pl. Cad. Pl. Washer, 3/8 Stl. Lk. Cad. Pl. Nut, 3/8-16 Hex. Cad. Pl. Spacer (Section x-x) Spacer (Section Y-Y)

WABCO Part#

N451071-4702 N451071-4703 J480220 J048620 N451070-0205

N451070-0209

J050065 J047502 J047779 J048009 M451071-l007 M451071-1008

WABCD ~

Parts List Continued

Reference Figure 3

ITEH DESCRIPTION WABCO Part #

21 Screw, 3/8 x 2-3/4 Hex. Stl. Cad. J050064 Pl.

22 Nut, 8-32 Hex. Br. N.P. J048198 23 Clamp, Cable (on Arm) J700586 24 Washer, #8 Lk. Ph. Bz. N.P. J047709 25 Washer, #8 Br.. Pl. N. P. J475052 26 Screw, 8-32 x 9/16 Rd. Hd. Br. J051635

N.P •

.

5815, p. 15

WAEICCl ~

The following parts list for the Gate Mechanism is keyed to Figure 4.

ITEM

l 2 3 4 5 6 7 8 9

10 .11 12 13 14 15 16 17 18 19 20

22 23 24

25 26

27 28 29

30 31 32 33 34 35 36 37 38 39 40 41 42

5815, p. 16

DESCRIPTION

Mechanism, Crossing Gate

Cover, Mechanism Washer, Flat, 1/4 Washer, Lock,l/4 T.P. Screw, Hex. Hd.,1/4-20 x 1-1/4 Lg. Spacer Case, Mechanism Crip, Cable, 45 degree Ventilator Ring, Retaining Bearing Clamp Ring, Retaining, Stl. 3/16 Sq. Screw, Hex. Hd.,1/4-20 x 3/4 Lg. Gear, Sector Seal Gasket Sleeve Washer, Plain 7/8" Washer, Lock 7/8" Nut, Hex. 7/8-9

Shaft, Gate Spacer Screw, Mach., Rd. Hd. No.

10-32 x 3/8 Lg. Washer, Lock No. 10 Screw, Mach. Rd. Hd. No.

10-32 x 1-1/2 Lg. Washer, Plain, No. 10 Nut, Hex., No. 10-32 Screw, Mach., Rd. Hd., No.

10-32 x 1/4 Lg. Gear Assembly Gear Assembly Screw, Hex. Hd., 3/8 x 3/4 Hex. Cap Bumper Stop Clamp, Mast Washer, Lock Bolt, Sq. Hd., 3/4-10 x 7-1/2 Lg. Washer, Lock, 5/16 Screw, Hex. Hd., 5/16 x 1-1/4 Lg. Plate, Back-up Motor Grommet Resistor

PART NO.

N451070-0101

N451071-3602 J047501 J047775 J050021 M4510ll-0511 R451071-1101 J712060 N070109 J792214 J066384 M451071-0801 J079768 J050016 M451071-1601 J792215 M451071-3005 M451071-0703 J047508 J047773 J048029

M451071-2101 M451071-1701 J052564

J047733 J052569

J475077 J048172 J052563

N451071-l801 N451071-1802 J050051 J751287 M433619 J047772 J046748 J047526 J050040 M451071-3004 N451071-3101 J751118 J720261

WABCCI ~

The following parts list for the Gate Mechanism is keyed to Figure 4.

ITEM

1 2 3 4 5 6 7 8 9

10 .11 12 13 14 15 16 17 18 19 20

22 23 24

25 26

27 28 29

30 31 32 33 34 35 36 37 38 39 40 41 42

5815 I P• 16

DESCRIPTION

Mechanism, Crossing Gate

cover, Mechanism Washer, Flat, 1/4 Washer, Lock,1/4 T.P. Screw, Hex. Hd.,1/4-20 x 1-1/4 Lg. Spacer case, Mechanism Crip, Cable., 45 degree Ventilator Ring, Retaining Bearing Clamp Ring, Retaining, Stl. 3/16 Sq. Screw, Hex. Hd.,1/4-20 x 3/4 Lg. Gear, Sector Seal Gasket Sleeve Washer, Plain 7/8" Washer, Lock 7/8" Nut, Hex. 7/8-9

Shaft, Gate Spacer Screw, Mach., Rd. Hd. No.

10-32 x 3/8 Lg. Washer, Lock No. 10 Screw, Mach. Rd. Hd. No.

10-32 x 1-1/2 Lg. Washer, Plain, No. 10 Nut, Hex., No. 10-32 Screw, Mach., Rd. Hd., No.

10-32 x 1/4 Lg. Gear Assembly Gear Assembly Screw, Hex. Hd., 3/8 x 3/4 Hex. Cap Bumper Stop Clamp, Mast Washer, Lock Bolt, Sq. Hd., 3/4-10 x 7-1/2 Lg. Washer, Lock, 5/16 Screw, Hex. Hd., 5/16 x 1-1/4 Lg. Plate, Back-up Motor Grommet Resistor

PART NO.

N451070-0101

N451071-3602 J047501 J047775 J050021 M451011-0511 R451071-1101 J712060 N070109 J792214 J066384 M451071-0801 J079768 J050016 M451071-1601 J792215 M451071-3005 M451071-0703 J047508 J047773 J048029

M451071-2101 M451071-1701 J052564

J047733 J052569

J475077 J048172 J052563

N451071-1801 N451071-1802 J050051 J751287 M433619 J047772 J046748 J047526 J050040 M451071-3004 N451071-3101 J751118 J720261

ITEM

43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58

61 62 63

65 66 67 68 69

70 71

72

73 74 75 76 77 78 79 80 81

82 83 84 85

87 88 89

DESCRIPTION

Controller, Circuit Board, Terminal Bracket, Relay Relay, Motor Control Bearing, Thrust Housing, Mechanism Ring, Retainer Shaft, Gear Shield Screw, Hex. Hd. 1/4 x 3/8 Lg. Hold Clear Screw, Hex. Hd., 1/2-1.3 x 4-1/2 Lg. Washer, Lock 1/2" · Nut, Hex. Jam, 1/2-13 Spacer, 3/8 Stl. Screw, Hex. Hd., 1/2-13 x 1 Lg.

Connector, Box, 1-1/2" Nut, Conduit, 1-1/2" Screw, Cap, 3/8 x 2-1/4 Lg.

Resistor, Snub Follower, Cam (contact - 1) Spring, Contact (space - 1) Spring, Contact (space - 1) Screw, Mach., No. 8-32 x 3/8 Lg., Fil. Hd.

Plate, Reinf. Follower, Cam (contact - 3, 4, 5,

6, and 7) Spring, Contact (space - 3, 4,

and 5) Washer, Lock Washer, Insulating Bushing, Insulating Washer Nut, Hex. No: 14-24, Brass Post, Terminal Nut Nut Spring, Contact (space - 3, 4,

and 5) Screw, Fil. Hd. Washer, Lock Spring, Contact (space - 6 and 7} Spring, Contact (space - 6 and 7}

Gasket Screw, 4 x 1/4 Pan Hd. s. Screw, 10 x 3/8 Soc. Hd. Cap

PART NO.

N451071-2501 M451071-2801 M451071-5101 J726131 J792216 M451071-0501 J790835 M451071-1703 M451071-2701 J050011 J705032 J500025 J047783 J048016 M451071-2702 J050088

J070972 J048417 J050272

J720262 M451011-1702 N451011-1509 N451011-6301 J052255

M451011-6306 M213089

N451011-1501

M451011-3501 M451011-3402 M451011-3401 J047818 M029103 Ml30200 M029101 M031670 N451011-1503

J052301 J047669 N451011-1505 N451011-1507

J470033 J507297-0104 J050244

WABCC ~

5815, p. 17

WAS CD ~

ITEM

91 92 93 94 95 96 97 98 99

100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126

5815, p. 18

DESCRIPTION

Nut, 1/2 Conduit Lk. Clamp, · Mast Springs, Armature Release Spacer Cover, Relay Washer, 8 Stl. Lk. T.P. Screw, 8 x 5/8 Rd. Hd. T.P. Washer, 8 Stl. Pl. T.P. Connector Strap Connector Strap Cam Assembly Complete • Cam, Adjustable • Cam, Fixed • Arm, Rocker • Washer • Spring • Pin, 1/8 x 7/8 Roll • Screw, 1/4-20 x 5/8 Socket Hd. Washer, 3/8 Stl. Lk. CP. Spacer, Cam Washer ·· Clamp, Harness Clamp, Cable Bumper Stop Assembly complete Hasp Pin Nut Nut Bolt, eye Pin Bolt, U Nut, 1/2-13 Sq. Nut, 1/2-13 Hex. CP. Bolt Washer, 3/8 Lk. Diode and Fuse Assembly

Diode Only - 1Nll84R Fuse Only - 15 Amp. SLO-BLO

PART NO.

J048414 M451071-4701 J680182 M451071-5102 J726132 J047681 J052602 J047745 M047290-8064 Ml20343-8064 N451011-6401 M451011-6501 M451011-6502 M4510ll-1801 M038448 M451011-1901 J487025 J525300 J047779 M451071-5301 M041210 J701012 J700639 N451071-5 709 M289060 M209199 M267552 M046641 M395383 M398247-001 Ml03381 J048240 J048013 Ml05877 J047768 N451011-7101 J723995 J710129

pf· .. '~

\ !

0

( SUPPORT 18 CLAMP)

19 20 21

CROWN OF THE HIGHWAY

r,--------------------,i----------~ I I 1

1

~ I n I i.r,,, li : ~~/ rr ~

J I I "'i I I

I 11 I I 11

f-1: 30•.4... H I H I I I I 11 I I I I .L~ I 25 T"f i.:r,-,'\ I I

r--'!.:'' I I I I : : I r 11

r"~ ,>,-, \ 17 : l I I ' \iJ I I

t-i f,~1, I ........ 2 o R 3 I ~'- Ji l t·r

I I ,. A ~· H r~~ .. ~ /'.., ~-r·- 26 .,..-1°'"' : : I I(/')..' , I

1 ,/ • > I nl I I

!"-1"',~,, ,11/.: ,r.j. 13·-9-1/2.. u ,!1· 1· : i : ", < /" <~:::.. / 11 : :

I '\,: ,..,.... ' / o ' I I

! )\;::;x, 1

1·rt 1 i

~{ Q-)f )'?.2>,~-11 ,H ! j f l <'--} !?! ~'() > 42" l~·t' : : 16 ll~ 1LI ,, -ii : l r-. ..L_ • ..J.._. 'V 'I I : 15 I , , ·r .-. A ,, I , ,....,. 1-10 II• I I 14

~ : I -~...i; ,, :! l l ~r, "°' l. r\ 0 j ~ , : :

·i· (: ,~31.'·'-,F;r---.., I ~1 , ; : 13 J -4~· t' UL-)'. \ ·z. r-t-~ -- -p--_ ~~V I \ '-~./) - ---i '"J tr'J,,.~12 !·01:, ,· 1· '---· ff 1· qi.l I I',', •11

l : '·<',, . / 1 8 I : : : : ', ', I 9 I I : I I ', : I : I I I :. I I '>- r: - ., I I I I l ',,'...., L

0

! .. t:0

I I

I I 1' ,1 ,.,, - - I I !..-• I I I #-- - r---+...J.. __ _J l ~--------',, j '~- o o o a•-a-1 /4" l I ' L_...l_______ I I I I :

42"

/ ... .J-,~ u C+--r-, I I I I I I

65-1 /2"

1 •y•

36"

6"

7'-1 O"

I : I I I .-'·1 11 I 11 I 11 I

!..U

22 23 24

WABCC ~

~TRACK___,,.. SIDE

2-1/8" lr. -r'-· ---~ _J_ • a==:d::_:-=-*-- ( - I • •

- r~-=--;==- ~ 7_ 1 ;a•·

'I-, -.J-F;:. , • .. ..L-\ • 1-1/4" j_.9"?_J r.• ---li-~-1 27~~= = .. -rn..,

~--~l:.-::= =f--=--t==-I I I 1

l ) l ) ... __,,,, ,....__,

(SECTION Z-Z)

Figure 2A NOTE: -BASE DIMENSIONS VARY WITH APPLICATION t SEE PARTS LI ST

Figure 28

CUT 2" DIA. HOLE IN EXISTING MAST

65°-

--i

(SECTION Y-Y)

Figure 2C

Figure 2. AL-70 Crossing Gate Assembly Parts Locations

5815, p. 19/20

16

SECTION 'X-X'

20 16

21--,:1r--'----III~ l8

SECTION 'Y-Y'

11

12 fit I -13

SECTION 'W-W'

2A SEE FIGURE 1 I FLASHING

3A I lA' I I LIGHT'C' LIGHT'S'' LIGHT'A'(TIP)

lL2 T T 1 9

RECEPTACLE~~ l I I J ~~ f

PLUG ; 2 lO

,------ CHANNEL BOLT----- 26 --, I 25 I

GATE LAMP CIRCUIT

Figure 38

I I SUPPORT PLATE - -: 24 I

ACCESS PLATE

NOTE: INCLUDES COMPLETE LAMP ASSEMBLY. SEE PARTS LIST.

PLUG CONNECTOR

Figure 3C

1 I -- I 91

-8-1/2"(261

LENGTHS) 'B' 'A' J

I I I 15'-8·7/8" (32' LENGTHS) -----,

I I 22 1~3/4"

I I I I

WABCCI ~

TABLE 1. Alli! LEimTH TABULATION (See Figure 3A)

TOTAL 'C' ARI1 'A' 'B' AHOUi!T TO BE CUT LEHGTH LENGTH LENGTH OFF 3RD SECTION

32' 8' 4-5/8' 8' 4-5/8" 31' 8' 4-5/8" 7' 4-5/8" 30' 8' 4-5/8" 6' 4-5/8" 29 I 8' 4-5/8" 5' 4-5/8" 28' 7' 4-5/8" 5' 4-5/8" 27' 6' 4-5/8" 5' 4-5/8" 26' 8' 4-5/8" 8' 4-5/8" 25' 8' 4-5/8" 7' 4··5/8" 24' 8' 4-5/8" 6' 4-5/8" 23' 8' 4-5/8" 5' 4-5/8" 22' 7' 4-5/8" 5' 4-5/8" 21' 6' 4-5/8" 5' 4-5/8" 20' 5' 4-5/8" 5' 4-5/8" CUT 1 FT. OFF 3RD SECTION ONLY. 19' 4' 4-5/8" 5' 4-5/8" CUT 2 FT. OFF 3RD SECTION OULY. 18' 3' 4-5/8" 5' 4-5/8" CUT 3 FT. OFF 3PJ) SECTION ONLY. 17' 2' 4-5/8" 5' 4-5/8" CUT 4 FT. OFF 3RD SECTION ONLY. 16' 2' 4-5/8" 4' 4-5/8" CUT 4 FT. OFF 3RD SECTION AUD

1 FT. OFF 2RD SECTION AS SHOl•m Ii~ FIGURE 3A.

TABLE 2. COUUTERIJI::IGHT ?ABULATION

'A' COUiJ'i'ER-

AR.t"l COUNTER- UEIGIIT O" 90° LEUGTH WEIGHT POSITION TORQUI: TORQUE

32' 1601} *33-1/2" 95FT# 240FTl[ 31' 160(1 *33-1/2" 75FT(t 240FTll 30 I 16011 *33-1/2" 55FT;) 240FTJI 29' 16011 30-3/ 4" 75FT# 240FTl) 28' 160!1 30-3/4" SSFT# 240FTif 27' 160(,! 28-3/4" 75FT# 240FTil 26' 12011 *33-1/2" 75FT# 195FTil 25' 120ll *33-1/2" 55FT# 195FTjl 24' 120# 30-3/4" 65FT# 195FTJI 23' 120ll 30-3/4" SOFTJI 195FT# 22' 120ll 28-3/4" 60FT# 195FTll 21' 120# 28-3/4" SOFT# 195FTJI 20' lOOlt 30-3/4" SOFT# 185FTJI 19' 10011 28-3/4" 65FT# 185FT# 18' 100{) 28-3/4" SOFT# 185FTll 17' lOOll 25-1/4" 55FT# 185FT() 16' 10011 22-1/2" SOFT# 185FT#

I I I CENTERLINE OF 4" POST 1 I I ,::::::::::::::-::+ IQ /lST. SECTION /2ND. SECTION f--ts" I SUPPORT " " ~ . h d · * Counterweig t Exten s !PLATE BOLTS I I ,----~-,-------------- - - - r- ~r-- -- - --I j -----(lfi I 3 H L J. _ _ _ _ ~ ____ 0 ! L ---L-- _ _ o _ o] 1- 3RD. SECTION(TIP)

Beyond Support

I I I I LcuT OFF END OF I I 1 1 ENLARGED v1Ew SHOWING I ~ ::;r 2ND ARM SECTION r-.c;i- cuT OFF END OF

I LPORTIONOFARMSUPPORT -O FOR16FT.LENGTH 3RDARMSECTION ----------- I ONLY. FOR16T020FT.

: RECEPTACLE I LENGTHS.

I COUNTERWEIGHT I 3 - CONDUCTOR CABLE VIEW SHOWING ADJUSTMENTS TO 2ND AND 3RD I ADJU~MENT L __ ·- TO MECHANISM ARM SECTIONS FOR 16 FT. ARM (SEE TABLE 1)

I COUNTERWEIGHTS SEE T BLE 2 I Figure 3A I r 'A' 1_........14 GATE ARM SUPPORT, INCLUDES ALL PARTS I I SHOWN WITHIN DOTTED LINES EXCEPT ITEMS I / GATE ARM I ATTACHED TO ARM. SEE PARTS LIST

I SUPPORT I l OR 3

0000 I II CHANNEL I hlST. SECTION

BOLT I I I UG 'C'

! i lL HT i'X' I ·-· 1C • 0

~ --- - -- - ~~]~~~A~~~:~ - - -- -~ ~-=__J_ j _.~·~ ---- _1 ~~~:gKL~~ L •x•

5 2ND. SECTION

Figure 30 SUPPORT

9

Figure 3.

Reflective Red 7 3RD. SECTION

LIGHT 'A' (TIP)

AL-70 Gate Arm Assembly Parts Locations

5815, p. 21/22

108

ADJUSTABLE CAM ASSEMBLY

104 ~I lHI'"'~ II

14 10 15

I , 'ti\ ~§ • jj 31 = II 30

o;::=::i rn73 ; '1 i '.

11 75

71

81 83 82

CONTACT ASSEMBLY CONTACT ASSEMBLY FOR CAMS 6 & 7 FOR CAMS 3, 4, & 5

46 . Ii II 111?,:;'l ~ ~ ~ ~ ~ ~-L:ii-illli/ ~ ~I II / / ~ 49 ;' ', 50 ·

,-··~ 31

~~& ; 1 u ~=~l~=M=M~M~~ _ 11 ~na 1 , ~ ~ 1 ~ \ r c/l, 25

II If--'~ I Ar~1n;1~ •• I I 'Jf.

~~JV ",-_ -

65 ..... II c~.J UUU!lf =m~1m1~::-:l1 II Li -- SEE NOTE IN.........-, I I ( ) r-. 41,.......-111 / \ I 1

1 .l::JI II/ II I IIR I ~51 rrwq y\ . / Q II ·- .A' R . I~ ~n 11 , 1

(2\

~ 'O

40 . . r;-;- I 54 I O I II +---1' I ]~I I 1111 ~-__.--/ I II ~I .. \ i(,_ II i ~~ 1

62

61 ~ ' I ~ 124 123 124 121 ~~ 57 94 94

125 125

CONTACT ASSEMBLY FOR CAM 1

78

68

69

WABCD ~

Figure 4. AL-70 Crossing Gate Mechanism

5815, p. 23/24