Simard Workshop Manual

TABLE OF CONTENTS

Ordering Parts............................................................. 3 General Working Direction........................................ 4 Technical Description.................................................. 5 Tightening Torques...................................................... 6

Maintenance Chart...................................................... 7 Description Repair Work........................................... 8 Power steering troubleshooting.. 9

Alignment trouble shooting..... 10 Alignment.......... 11 11.1 11.2 Grease points.. 12

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Ordering Parts Ordering Parts for your AMS SUSPENSIONS Original AMS SUSPENSIONS parts are specially engineered and designed with carefully specified steels. These steels are tested for quality and consistency in both chemistry and strength. They meet exacting requirements for each particular application. Welding processes are monitored and tested for quality and integrity. Each type of weld is carefully and consistently applied to insure the least amount of steel texture change for maximun strength. Even the type of welding wire is ordered to meet the spcecificaly requirements of the particular application. There are many imitators out there without the design analysis, engineering or CAD-CAM capabilities of AMS SUSPENSIONS. Quite often their parts look identical. However, without the same steel specification, welding procedures and exact design requirements, these imitations are not the same as AMS SUSPENSIONS original parts. In addition to not lasting as long, they can cause genuine safety hazards. They may expose you, your employees or your customers to injury or worse. Ours parts are designed with safety and duration as our top priority.

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GENERAL WORKING DIRECTIONS IMPORTANT INFORMATIONS Your AMS suspension Althought your new truck has been built, inspected, lubricated and final adjustements performed at our Baie St-Paul assembly plant, some settling of the system, can be brought on due to the wearing of moving parts. Quick action to correct these minor items could prevent a major repair later. During first 3000 miles ( 5000 kms ) After the first 125 miles ( 200 kms ), retorque the wheel nuts using an accurately calibrated torque wrench. Recheck this torque again after 500 miles (800 kms ). Observe instruments often, and shut the vehicule down as soon as possible, at first sign of any abnormal readings. Check for leaks, loose fasteners, unusual noises , etc and correct as necessary. Check the U-bolts torque on AMS suspension at the end of the first 1000 miles ( 1600 kms ) of service. At the end of first 3000 miles ( 5000 kms ) or before 4000 miles ( 6500 kms ) . Retorque U-bolts Note: Refer regularly to our Simard preventive maintenance schedule supplied in this manual.

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AMS SPRING SUSPENSIONPatented in Canada and the United States since 1992, AMS springsuspensioninvolving the addition of a second axle at the front of the vehiclepresents many advantages:

Increases and better distributes load capacity;Improves driving stability, for greater safety and comfort;Requires minimal maintenance, due to its rugged construction;Extends the lifetime of tires and steering components;Adapts to all makes of trucks

Suspension type spring front tandem (multileaf)

Suspension load capacity 7,250/8 7,160/9,070 kg (16,000/18,000/20,000 lbs)

Axle type I-beam steering axle

Axle load capacity 7,250/8,160/9,070 kg (16,000/18,000/20,000 lbs)

Axle spacing 64 to 96 inches, depending on vehicle model

Brakes (16.5 x 5) or (16.5 x 6) S-cam air withautomatic slack adjuster (ABS optional)

Hub types hub mount, stud mount, and 6 spoke wheels

Wheel (rim) types aluminum or steel (11 1/4 or 13 3/16)

Tire size 315/80R22.5, 385/65R22.5, and 425/65R22.5

Steering hydraulic power (65 series TRW steering gear)

Pump 8 GPM minimum required

Turning radius retains the same specifications as the original equipment

Total weight suspension and axle combined 1,134 kg (2,500 lbs)

Technical description:

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Maintenance Chart

AMS SUSPENSION preventive maintenance chart

Check that all the suspension components are very well lubricated. Check steering components wear ( Tie-Rod-End ) Check excessive tire wear ( sign of alignement problems or steering parts failure ). Check power steering oil level. Check both front axles parallelism. Check drag ling condition . Check wheel stoppers ( they should be well synchronized ). Check tire pressure ( 80 to 100 psi.). Check wheel oil level. Check brakes adjustement on the axles.

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DESCRIPTION OF REPAIR WORKS

Spring replacement................... 8.1 Tie rod end replacement. 8.2

Spring pins, rollers wear shim replacement 8.3

Equalizer removal...... 8.4

8.4.1 8.4.2 Equalizer bushing replacement.............. 8.5

Fix the equalizer...... 8.6 8.6.1 8.6.2 Steering assist replacement..... 8.7 Knuckle arm replacement .. 8.8

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Working Suspension AMS

8.1. Spring replacement.

-8.1-

5

Pic.2

Pic.1


8.2 Tie rod end replacement

1- Before removal , mesure with accuracy thelenght ot the drag link, center-to-center.

2- If you have to remove the two draglink be sure of their position.DO NOT INVERT . (Pic. 4 )

3- Refer to the torque chart.See P.7

-8.2-

Drag link avant

Pic. 3

Pic. 4

Pic.5

Pic.6

4- Reinstall clamps in the same axisto prevent conflict with another parts.

5- Refer to thee torque chartSee p.7

6- Check alignement .See p.12

?


8.3 Spring pins, rollors and wear shimreplacement

-8.3-

Pic. 7

Pic. 8

Pic.9

1- Make sure that you use original parts.

2- Make sure that you reinstall spring pinswith their grease holes in avertical axis.

3- Do not overthight the wear shimhex. Bolts neither the spring pinsto make sure that springs and rollercan move freely in the hanger.

4- Reinstall cotter pins.


8.4 Equalizer removal

-8.4-

Pic. 11

Pic. 12

Pic. 10

1- Lift up vehicule

2- Remove all bolts, spring pins andcross rods. ( pic. 11-12-13 )

Pic. 13


8.4.1 Equalizer removal ( next )

-8.4.1-

Pic. 18

Pic. 19

Pic. 15

Pic. 14

Pic. 21

1- If necessary, remove entire equalizerhanger. ( Pic. 14)

2- Remove center bolt nut . (Pic.15)


8.4.2 Equalizer removal ( next )

-8.4.2-

Pic. 18

Pic. 17

Pic. 16

1- You may have to oxycut center bolt.(Pic.16-17-18)


8.5 Equalizer bushing replacement

-8.5-

Pic. 19

Pic. 21

Pic. 20

1- Use hydraulic press with appropriate dieto remove old bushing and reinstall newbushing. (Pic.19)

2- Use original bushing and center bolt.

3- Use rubber resistant grease to lube tube andbushing. (Pic.20)

4- Center bushing in the tube .(Pic 21)


8.6 Fix the equalizer

-8.6-

Pic. 22

Pic. 29

.1- Lube each of equalizer hanger, center boltand center bushing hole , before installation(Pic. 22-23)

Pic. 23

2- reinstall each component as shown .( Pic.24 to 30)

Pic. 24

Pic. 25


8.6.1 Fix the equalizer ( next )

-8.6.1-

Pic. 26

Pic. 27

Pic.28


8.6.2 Fix the equalizer (next )

-8.6.2-

Pic. 30

Pic. 29


8.7. Steering Assist replacement

-8.7-

Pic. 31

Pic. 32

Pic.33

1- Use original part only. (Pic.31)

2- Mark each hose before removing.

3- Mark each spacer between steering andframe. (Pic.32)

4- See torque chart.

5- To drain air:- remove cover of steering oil tank- add oil if needed- start engine, idle- remove pitman arm from steering assist

without removing tie rod end.- with wheels on the floor, turn slowly left

and right to the extreme 3 or 4 times.

Pic. 33

Pic. 34

Note:

Its important to make sure that thesector shaft line is perpendicular to thesteering housing.Also, steering assist on main powersteering shaft should have the samerotating direction.


8.8 Knuckle arm replacement

-8.8-

Pic.33

1- Use original part only.

2- See torque chart.

Pic. 35

Pic. 36

Pic. 37

Pic. 38

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Check power steeringoil

levelOK Check pumppressure

Low

Check releasevalve

Defective

OK

OK

Check pump G.P.M.

Low

Repairor

replace

Repairor

replace

Repairor

replace

Repairor

replace

Repairor

replace

Check all hosesand

fitting

Defective

replace

OKCheck pressure at

power steeringdelivery port

Low

Low

Add

Check steering assisthoses and coupling

Defective

Check pressureat steering assist

del. port

Low

OK

OK

OK

Contact Simardau

Tl.: 1 (418) 435-5347Fax.: 1 (418) 435-3346

WWW.EMMANUELSIMARD.COM

Power steering trouble shooting

Alignement trouble shooting (See page 11-11.1-11.2 )

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Check king pincondition

OK Check Nuckle Armcondition

Defective

Checkalignement

Repairor

replace

Repairor

replace

Repairor

replace

Repairor

replace

Repairor

replace

Repairor

replace

OK

OK

Check drag linkcondition

CheckCross tubeCondition

DfectiveDfective

OKCheck Parallelism

Defective Defective Defective

Check tie-rod-endinstallation orderOn Pitman Assist

Dfective

Check AxlesAlignement onRear Tandem

OK

OK

OK

Contact Simardau

Tl.: 1 (418) 435-5347Fax.: 1 (418) 435-3346

WWW.EMMANUELSIMARD.COM

Suspension AMSTable des MatiresOrdering PartsGeneral Working DirectionsTechnical DescriptionsTightning TorquesMaintenance ChartDescripton of repair worksSpring replacementTie rod end replacementSpring pins, rollors, wearshim replacementEqualizer removalEqualizer removal (next)Equalizer removal (next)

Equalizer bushing replacementFfix the equalizerFix the equalizer (next)Fix the equalizer (next)

Sterinig assist replacementKnuckle arm replacement

Power steering trouble shootingAlignement trouble shootingAlignementAlignement (next)Alignement (next)

Grease Points

Documents

Simard Workshop Manual