730C2 and 725C2 Articulated Truck Power Train Caterpillar

Removal Procedure

Start By:

1. Remove the stabilizer rod for the front axle.

2. Remove the front drive shaft.

3. Remove the front axle oil cooler pump and motor.

Show/hide table

Personal injury or death can result from improper lifting or blocking. When a hoist or jack is used to lift any part or component, stand clear of the area. Be sure the hoist or jack has the correct capacity to lift a component. Install blocks or stands before performance of any work under a heavy component. Approximate weights of the components are shown. Clean all surfaces where parts are to be installed.

Show/hide table

At operating temperature, the hydraulic tank is hot and under pressure. Hot oil and components can cause personal injury. Do not allow hot oil or components to contact skin. Remove the filler cap only when the engine is stopped, and the filler cap is cool enough to touch with your bare hand. Remove the filler cap slowly in order to relieve pressure.

Note: Cleanliness is an important factor. Before the removal procedure, the exterior of the component should be thoroughly cleaned. This will help to prevent dirt from entering the internal mechanism.

1. Put identification marks on all lines, hoses, wires, and tubes for installation purposes. Plug all lines, hoses, and tubes. This helps prevent fluid loss and contamination of the oil system.

2. Open the two control valves that are used when the suspension is being lowered to relieve the pressure in the suspension system. Refer to Operation and Maintenance Manual, "Suspension System - Check / Adjust". Leave the control valves in the OPEN position.
   Show/hide table

   Illustration 1	g06135331

3. Use Tooling (A) to raise the front of machine. The machine should be raised enough to facilitate the removal of the front tire
   Show/hide table

   Illustration 2	g06135307

4. Position Tooling (B) under the center of the machine for additional support.
   Show/hide table

   Illustration 3	g06135306

5. Attach Tooling (C) to the rear section of front suspension frame (1) on each side of the machine as shown. The weight of front suspension frame (1) is approximately 254 kg (560 lb).
   Show/hide table

   Illustration 4	g06134423

6. Remove bolts (4) and plate (2). Remove tube assembly (3).
   Show/hide table

   Illustration 5	g06134424

7. Disconnect and reposition harness assembly (5).
   Show/hide table

   Illustration 6	g06134833

8. Remove tube assembly (7).

9. Disconnect hose assemblies (6) .
   Show/hide table

   Illustration 7	g06134431
   Typical Example

10. Attach Tooling (D) and suitable lifting devices to both sides of front axle (8). The weight of front axle (8) is approximately 927 kg (2044 lb).
    Show/hide table

    Illustration 8	g06134457

11. Disconnect hose assembly (12) from special washer (13). Remove bolt (9), nut (10), washers (11), and special washer (13).
    Show/hide table

    Illustration 9	g06134458
    Typical Example

12. Install Tooling (E). Use Tooling (E) to extract pin (14). Remove Tooling (E) and pin (14).
    Show/hide table

    Illustration 10	g06134464
    Typical Example

    Show/hide table

    Illustration 11	g06134467
    Typical Example

13. Remove the bottom of the suspension cylinder out of bracket (15) to remove spacer (16) and double seal (17). Place the bottom of the suspension cylinder aside.

14. Repeat step 11 through 13 to disconnect the left side suspension cylinder from the front axle.
    Show/hide table

    Illustration 12	g06134468

    Show/hide table

    Illustration 13	g06134837

15. Use two people to remove bracket (18). The weight of bracket (18) is approximately 28 kg (62 lb). Remove bolts (19) and bracket (18).

16. Remove bolts (20) from front axle (8).

17. Lower and remove front axle (8) from the machine.

Installation Procedure

1. Install front axle (8) in the reverse order of the removal.

   1. Tighten bolts (20) to a torque of 900 ± 100 N·m (664 ± 74 lb ft)

   2. Tighten bolts (19) to a torque of 900 ± 100 N·m (664 ± 74 lb ft)