CIPI UNDERCARRIAGE Arrangements: 9Q-5195, 9Q-5197, 9Q-5198, 9Q-5232, 9Q-5504, 9Q-5643, 9Q-5651, 9Q-5727, 9Q-5728, 9Q-5729, 9Q-5730, 9Q-5731, 9Q-5747, 9Q-5876, 180-4029, and 213-3892 Caterpillar

Travel Motor - Disassemble

Usage:

OEMS L5E

Disassembly Procedure

Start By:

Remove the travel motor.

Reference: Refer to Disassembly and Assembly, "Travel Motor - Remove" in this manual.

Show/hide table

NOTICE

Care must be taken to ensure that fluids are contained during performance of inspection, maintenance, testing, adjusting and repair of the product. Be prepared to collect the fluid with suitable containers before opening any compartment or disassembling any component containing fluids. Refer to Special Publication, NENG2500, "Caterpillar Tools and Shop Products Guide" for tools and supplies suitable to collect and contain fluids on Caterpillar products. Dispose of all fluids according to local regulations and mandates.

Thoroughly clean the outside of the travel motor prior to disassembly.

Fasten the travel motor to a suitable holding fixture in a vertical position. The weight of the travel motor for Type "A" excavators is 66 kg (146 lb). The weight of the travel motor for Type "B" excavators is 50 kg (110 lb).

Put an alignment mark across the head and the body of the travel motor for assembly purposes. The head must be reinstalled in the head's original position on the body of the travel motor.

Show/hide table




Illustration 1	g00510326

Note: During the removal of head (2) from the body of the travel motor, be careful not to damage the mating surfaces of the head.

Remove socket head bolts (1) .

Remove head (2) from the body of the travel motor.

Show/hide table




Illustration 2	g00510341

Show/hide table




Illustration 3	g00510349

Turn over head (2) .

Remove O-ring seal (6), shims (5), port plate (4), and bearing (3) from the head.

Remove the two check valve assemblies from the head.

Note: There is a retainer under spring (9). This retainer is a press fit in head (2). Do not remove the retainer.

Insert a dowel rod with a small diameter into hole (X). Tap the dowel rod with a plastic hammer in order to remove spring (9), poppet (8) and seat (7) from the head.

Show/hide table




Illustration 4	g00510351

Remove three fittings (10) and plugs (11) from the head. Remove the O-ring seal from each fitting.

Show/hide table




Illustration 5	g00510352

Remove three O-ring seals (12) and washer set (13) from the body of the travel motor.

Place a shop towel over brake piston (14). Retain brake piston (14) by hand, and apply approximately 525 kPa (75 psi) of shop air pressure to brake release port (Y). Make sure that the shop air pressure is free of water. Brake piston (14) will move up the piston guide, and out of the piston guide. Remove brake piston (14) from the body of the travel motor.

Show/hide table




Illustration 6	g00510353

Remove O-ring seal (15) from the brake piston. Remove backup ring (16) from the brake piston.

Remove O-ring seal (17) from the brake piston. Remove backup ring (18) from the brake piston.

Show/hide table




Illustration 7	g00510356

Remove piston guide (19), five friction plates (20) and the four steel plates from the body of the travel motor.

Show/hide table




Illustration 8	g00510359

Remove O-ring seal (21) from the piston guide. Remove backup ring (22) from the piston guide.

Show/hide table




Illustration 9	g00510365

Note: Do not allow the components of barrel assembly (23) to come apart during the removal from the travel motor. All of the components in the barrel assembly must be reinstalled in the component's original location.

Use two large screwdrivers, as shown. Slowly remove barrel assembly (23) from the body of the travel motor. Do not allow the components to fall apart.

Show/hide table




Illustration 10	g00510502

Note: Shoe retainer (24) and piston shoe assemblies (25) are nonserviceable separately. Prior to the removal of the shoe retainer and the piston shoe assemblies from barrel (26), put identification marks on piston shoe assemblies (25) for assembly purposes. Identification marks are used to identify the piston shoe assembly's location in shoe retainer (24) and barrel (26). The piston shoe assemblies must be reinstalled in the piston shoe assembly's original bores in the shoe retainer and the barrel.

Remove shoe retainer (24) and piston shoe assemblies (25) from barrel (26). Separate the piston shoe assemblies from the shoe retainer.

Show/hide table




Illustration 11	g00510504

Remove guide (27), spacer (28) and springs (29) from the barrel.

Show/hide table




Illustration 12	g00510547

Remove cam plate (30) from the body of the travel motor.

Show/hide table




Illustration 13	g00510550

Remove two keys (31) and the two locating pins (not shown) from the body of the travel motor.

Show/hide table




Illustration 14	g00510551

Remove O-ring seal (33) from the body of the travel motor.

Use a soft faced hammer to remove shaft assembly (34) from the body of the travel motor. Remove the shaft assembly in the direction that is indicated by the arrow. Refer to Illustration 14.

Show/hide table