Draw Bar

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Shutdown SIS

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Disassembly and Assembly 1 6G M OTOR GRADER VEHI CLE SYSTEMSM ed ia N u m b er - R EG 01614 - 03 P u bl icat i on D a t e - 01 / 03 / 1983 D a t e U pd a t ed - 10 / 10 / 2001

Circle Drawbar

SMCS - 6153-11 ; 6153-12

Remove Circle Drawbar

1. Start the engine. Lift the blade off the ground. Move the centershift to the farthest position to theright. Put tooling (A) in position under the circle as shown. Lower the circle on to tooling (A). Shutoff the engine.

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2. Remove the bolts and caps (5) from the end of the two lift blade lift cylinders (1). Start the engine.Move the cylinder rods for the blade lift cylinders all the way into the cylinder. Stop the engine.

3. Remove cap (4) from the end of blade centershift cylinder (3). Fasten a hoist to the cylinder. Startthe engine and move the cylinder rod all the way into the blade centershift cylinder.

Oil that is hot or under pressure can cause personal injury. To preventpersonal injury, let the oil become cool before oil lines (2) are

disconnected. Loosen oil lines (2) slowly to release any oil pressure thatis in the oil lines.

4. Disconnect oil lines (2) from the blade centershift cylinder. Fasten the blade centershift cylinder tothe blade lift arm with a strap. Remove the hoist.

Earlier Model Shown


disconnected. Loosen oil lines (6) slowly to release any pressure that isin the oil lines.



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5. Put identification on oil lines (6) as to their location on the swivel joint. Disconnect oil lines (6).

6. Remove the cotter pin and washer from the end of pin (7). Remove the pin and lower guideassembly (10) down on to the blade.

7. Loosen nuts (8) and setscrews (9) that hold the shoes in position.

8. Remove the nuts and bolts (11) that hold shoes (13) in place. Remove all the shoes (13), shims (12)and wear strips (14) from each shoe.



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Earlier Model Shown


disconnected. Loosen the oil lines slowly to release any pressure in theoil lines.

NOTE: Step 9 is for earlier models only.

9. Put identification on oil lines (15) for correct installation. Disconnect oil lines (15) from blocks(16).

Later Model Shown


disconnected. Loosen the oil lines slowly to release any pressure in theoil lines.



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NOTE: Step 10 is for later models only.

10. Disconnect oil lines (19) from lock check valves (17).

11. Install tooling (B) on the rear of the circle drawbar. Fasten a hoist to tooling (B) and to the front ofthe circle drawbar. Remove eight bolts (18).

Typical Example

12. Move the circle drawbar toward the rear of the machine to disengage the pinion on circle drive(20) from the circle.

13. Remove circle drawbar (21) from the machine. The weight of the circle drawbar is approximately2800 lb. (1270 kg).

Install Circle Drawbar

Typical Example



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1. Install tooling (A) and a hoist to circle drawbar (1) as shown. Put the circle drawbar in positionover circle (2). Lower the circle drawbar until it is approximately 3 in. (76.2 mm) above circle (2).The weight of the circle drawbar is approximately 2800 lb. (1270 kg).

2. Make sure the ten wear strips (3) are in position between circle drawbar (1) and circle (2). Lowerthe circle drawbar down into position. Move the drawbar forward until the pinion on the circle drive isengaged in the circle.

Later Model Shown

3. Make sure the drain groove (slot) in cap (7) is down. Install the eight bolts (5) that hold cap (7) inposition. Tighten the bolts to a torque of 324 15 lb.ft. (440 20 Nm).

NOTE: Step 4 is for later model machines only.

4. Connect nine oil lines (6) to lock check valves (4) on both sides of the frame. Remove the hoist andtooling (A) from the circle drawbar.



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NOTE: Step 5 is for earlier model machines only.

5. Connect nine oil lines (8) to blocks (9).

6. Put wear strip (15) in position on each shoe (14). Install shoe (14), the original shims (10) and nutand bolt (11). Tighten nut and bolt (11) just enough to hold the shoe in position. Add or subtractshims (10) until dimension (X) is .024 .012 in. (0.6 0.3 mm).

7. Tighten setscrew (12) until dimension (Y) is .031 .012 in. (0.8 0.3 mm). Tighten locknut (13).Tighten nut and bolt (11) to a torque of 516 20 lb.ft. (700 27 Nm).



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8. Install guide assembly (16). Install pin (17) through the guide assembly and swivel joint to hold theguide assembly in position. Install the washer and cotter pin that holds the pin in place.

Later Model Shown

9. Connect four oil lines (18) to the swivel joint.

10. Fasten a hoist to blade centershift cylinder (21). Remove the strap that holds it to the blade liftarm. Lower the blade centershift cylinder into position and connect two oil lines (20).

11. Make sure the shims and inserts are in position in the head end of the cylinder and in cap (22). Put5P960 Multipurpose Type Grease on the ballstuds on the circle drawbar. Move the head end of thecylinder until it is in position against the ballstud on the circle drawbar. Install cap (22).

12. Make sure the shims and inserts are in position in the rod end of blade lift cylinders (19) and incaps (23). Move the rod end of the cylinders out until they are against their ballstuds on the circledrawbar. Install caps (23). Tighten the bolts that hold caps (23) in position to a torque of 320 15lb.ft. (434 20 Nm).

13. Lift the circle drawbar and remove tooling (B). pg1



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