920 & 930 WHEEL LOADER VEHICLE SYSTEMS Caterpillar


Lift Arms

Usage:

Remove Lift Arms

start by:

a) remove bucket positioner

b) remove bucket

1. Start the engine and extend the tilt cylinders until lever assemblies (1) are in the position shown. Stop the engine and fasten chains around lever assemblies (1) to hold them to the lift arms.

2. Fasten a hoist to the lift arms as shown. Lift the arms until tooling (B) can be installed.

3. If necessary use tool (A) and clean the threads of the cylinder and lift arm pins.

4. Remove the bolt that holds the tilt cylinder rod pin. Fasten a hoist to the tilt cylinder and install tooling (B). Remove the pin and lower the cylinder rod to the axle housing. Remove the hoist.

NOTE: Tooling (B) can not be used on the right side.

5. Remove the bars that hold the lift cylinder rod pins and install tooling (C). Remove the pins and lower the cylinder rods to the frame.

6. Remove the bolts that hold the lift arm pins in position. Install tooling (B) and remove the pins.

7. Remove the lift arms. The weight of the lift arms is 1540 lb. (693 kg).

8. Remove seals (2) from the frame end of the lift arms.

9. Use tooling (D) to remove the bearings from the frame end of the lift arms.

10. Remove seals (3) from the bucket end of the lift arms.

11. Use tooling (E) to remove the bearings from the bucket end of the lift arms.

Install Lift Arms

1. Use tooling (A) to install the bearings in the bucket end of the lift arms until the bearings are in the center of their bore.

2. Use tooling (B) to install the bearings in the frame end of the lift arms, until the bearings are in the center of their bore.

3. Use tool group (C) to install the seals on each side of the bearings. Make sure the lip of the seals is toward the outside as shown.

4. Fasten a hoist to the lift arms and put them in position on the machine.

5. Install the pins that hold the cylinder rods and lift arms in position. Install the bolts that hold the pins. Put clean grease in the pins.

6. Remove the chains from lever assemblies (1). Remove the hoist from the lift arms.

end by:

a) install bucket

b) install bucket positioner

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