12G, 120G, 130G & 140G MOTOR GRADER VEHICLE SYSTEMS Caterpillar

Start By:

a. remove wheel spindles and wheel spindle housings.

Typical Example

1. Remove the nut, washer and bolt (5) that hold the lock in position. Remove the lock (6).

2. Fasten a hoist to the wheel lean arm (2). Remove bolts, washers and retainers (7) from pin (4). Remove pin (4) that holds wheel lean arm (2) to the front axle.

3. Remove pin (3) from wheel lean arm (2) and the wheel lean bar.

4. Remove wheel lean arm (2). The weight of the wheel lean arm is 31 Kg (68 lbs.).

5. Use tool A and remove the bearings and the seals from the wheel lean arm (2).

6. Repeat Steps 1 through 5 for the other wheel lean arm.

NOTE: The following steps are for installation of the wheel lean arms.

Typical Example

7. Install the two seals in the front axle with tooling (A). Install the seals so the lip is even with, and toward the inner surface of the front axle.

Typical Example

8. Install bearings (8) in the front axle with tooling (B). Install the bearings so they just make contact with the seals.

9. Fasten a hoist to wheel lean arm (2). Put it in position on the front axle.

10. Install pin (4) in the front axle and the wheel lean arm. Make sure the groove in pin (4) is in alignment with the opening in the wheel lean arm (2).

11. Install pin (3) in the wheel lean bar and wheel lean arm (2). Make sure the groove in the pin (3) is in alignment with the opening in the wheel lean arm. Install the retainer and the bolts in pin (3). Hold a minimum gap between the retainer and the wheel lean bar of .76 mm (.030 in.). Install the lock, the bolts and nut that holds pin (3) in the wheel lean bar and the wheel lean bar arm.

12. Put lock (6) in position in pin (4) and the wheel lean arm (2). Install the nut, washer and bolt (5) that hold the lock (6). Tighten the bolt to a torque of 700 ± 27 N·m (515 ± 20 lb.ft.).

13. Repeat Steps 7 through 12 for the other wheel lean arm.

End By:

a. install wheel spindles and wheel spindle housings