325, 325B and 325L Excavators Caterpillar

Removal Procedure For The Final Drive On CIPI Undercarriage Arrangements Which Are Based On 325 Track Type Excavators

Start By:

1. Separate the track assembly. Refer to Disassembly and Assembly, "Track - Seperate" in this manual.

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At operating temperature, the hydraulic oil is hot and under pressure. Hot oils can cause burns. To prevent possible personal injury, release the pressure in the implement hydraulic circuit (boom, stick, bucket, and swing), travel circuits, and the hydraulic oil tank at the filler cap before any hydraulic lines or components are disconnected or removed. Remove the filler cap only when the engine is stopped and the filler cap is cool enough to touch.

1. Release the hydraulic system pressure. Refer to Disassembly and Assembly, "Hydraulic System Pressure - Release" in this manual.

2. Remove the cover assembly from the inside rear of the final drive.

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Illustration 1	g00903628

3. Fasten tooling (A) and a hoist to final drive (1). Put a slight lifting tension on the final drive.

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Illustration 2	g00903631

4. Disconnect hose assemblies (2) and (7) from the travel motor. Disconnect pipes (5) and (6) from the travel brake valve. Put plugs in the pipes and hose assemblies in order to prevent oil loss and keep contaminants out of the hydraulic system.

5. Remove twenty bolts (3) that hold the final drive to the undercarriage frame assembly.

6. Install two suitable sized forcing screws in two threaded holes (4) in the undercarriage frame assembly. Tighten the two forcing bolts evenly in order to loosen the final drive from the undercarriage frame assembly.

7. Carefully remove the final drive from the undercarriage frame assembly. The weight of the final drive is approximately 458 kg (1010 lb).

Removal Procedure For The Final Drive On CIPI Undercarriage Arrangements Which Are Based On 325B Track Type Excavators

Start By:

1. Separate the track assembly. Refer to Disassembly and Assembly, "Track - Seperate" in this section.

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At operating temperature, the hydraulic oil is hot and under pressure. Hot oils can cause burns. To prevent possible personal injury, release the pressure in the implement hydraulic circuit (boom, stick, bucket, and swing), travel circuits, and the hydraulic oil tank at the filler cap before any hydraulic lines or components are disconnected or removed. Remove the filler cap only when the engine is stopped and the filler cap is cool enough to touch.

1. Release the hydraulic system pressure. Refer to Disassembly and Assembly, "Hydraulic System Pressure - Release" in this section.

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Illustration 3	g00486980

2. Remove four bolts (1) and the washers that secure cover assembly (2). Remove cover assembly (2) from the inside rear of the undercarriage frame assembly.

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Illustration 4	g00486981

Note: When two tube assemblies (3) are disconnected from the travel brake valve, oil will flow from the tube assemblies. Oil will also flow from two hose assemblies (4) and (5) when the hose assemblies are disconnected from the travel motor. Place a suitable container under the tube assemblies and under the hose assemblies in order to collect the oil.

3. Disconnect two tube assemblies (3) from the travel brake valve. Disconnect hose assemblies (4) and (5) from the travel motor. Put plugs in the ends of the tube assemblies and in the ends of the hose assemblies in order to prevent oil loss and keep contaminants out of the hydraulic system.

4. Remove elbow (6) from the travel motor.

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Illustration 5	g00486987

5. Fasten Tooling (A) and a hoist to final drive (7), as shown. Put a slight lifting tension on the final drive.

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Illustration 6	g00486988

6. Remove two plugs (9) from the forcing bolt holes in the undercarriage frame assembly.

7. Remove 20 bolts (8) and the washers that secure the final drive to the undercarriage frame assembly.

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Illustration 7	g00486990

8. Install two suitable sized forcing bolts (10) in the forcing bolt holes in the frame. Tighten the two forcing bolts evenly in order to loosen the final drive from the undercarriage frame assembly.

9. Carefully remove final drive (7) from the undercarriage frame assembly. The combined weight of the final drive and the travel motor is approximately 449 kg (990 lb).

10. Remove two forcing bolts (10) from the undercarriage frame assembly.

11. Remove the travel motor from the final drive. Refer to Disassembly and Assembly, "Travel Motor - Remove" in this section.

Removal Procedure For The Final Drive On CIPI Undercarriage Arrangements Which Are Based On 325C Track Type Excavators

Start By:

1. Separate the track assembly. Refer to Disassembly and Assembly, "Track - Seperate".
2. Remove the travel motor. Refer to Disassembly and Assembly, "Travel Motor - Remove".

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Illustration 8	g00489826

Note: Adjust the height of Tooling (A) so that there is sufficient clearance between the sprocket and the track for the removal of the final drive.

1. Lift the side of the machine in order to install Tooling (A) under the frame, as shown.

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Illustration 9	g00712767

2. Fasten Tooling (B) and a hoist to final drive (1), as shown. Put a slight lifting tension on the final drive.

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Illustration 10	g00712737

Note: Mark the orientation of bolt holes (2) for the travel motor for installation purposes.

3. Remove bolts (3) and the washers from the final drive.

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Illustration 11	g00712749

4. Use Tooling (C) in order to remove the final drive from the frame.

5. Carefully remove final drive (1). The weight of the final drive and the sprocket is approximately 312 kg (688 lb).

6. Remove Tooling (C) from the frame.