Caterpillar Excavator 336EL

WARNING: Personal injury can result from hydraulic oil pressure and hot oil.

Ensure all work tools are lowered to the ground.

Verify the hydraulic oil is cool before removing components or lines.

Remove the oil filler cap only when the engine is stopped and the cap is cool enough to touch.

Refer to Operation and Maintenance Manual, 'Final Drive Oil - Change' for correct draining and filling procedures.

Final Drive and Travel Motor Removal

Remove bolts (1) and cover (2).

Install O-ring seal (35) onto the housing of the travel motor.

Install seal (34) and piston actuator (33). Lubricate the surfaces of piston actuator (33) with lubricant that is being sealed.

Install backup ring (32) and seal (31).

Install cover (30) and bolts (29).

Tighten bolts (29) to a torque of 28 ± 7 N·m (21 ± 5 lb ft).

Lip Seal and Retaining Ring Installation

Apply Tooling (G) to the mating surface of lip seal (28).

Remove all compounds, oil, and dust before assembly

Installation of Final Drive and Travel Motor

Install final drive and travel motor in the reverse order of removal

Tighten bolts (9) to a torque of 80 ± 8 N·m (60 ± 6 lb ft)

Apply Tooling (C) to the threads of bolt (8)

Refer to Service Magazine, M0083843, for detailed bolt tightening procedure

Tighten hose assembly (3) to a torque of 160 ± 16 N·m (120 ± 12 lb ft)

Tighten bolts (1) to a torque of 130 ± 10 N·m (95 ± 7 lb ft)

Apply Tooling (D) to the surface of dowels (46)

Roller Bearing Installation on Motor Housing

Raise the temperature of roller bearing (47)

Install the roller bearing (47) on motor housing (48)

Bearing Races Installation in Sprocket Housing

Lower the temperature of bearing races (43)

Ensure the following components are removed

Attach Tooling (A) and a suitable lifting device to cover (2)

Remove plate (3) from cover (2)

Remove the following components