Separation Procedure
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Table 1
| Required Tools |
| Tool |
Part Number |
Part Description |
Qty |
| A |
5P-0306 |
Vacuum Transducer |
1 |
| FT-1115 |
Vacuum Cap |
1 |
| 6V-4142 |
Fitting |
1 |
| 5K-5068 |
Fitting |
1 |
| B |
4C-6486 |
Stand |
2 |
| 8S-7621 |
Tube |
2 |
| 8S-7625 |
Collar |
2 |
| 8S-8048 |
Saddle |
2 |
| 8S-7615 |
Pin |
4 |
| 8S-7650 |
Cylinder As |
2 |
| 4C-5809 |
Electric Hydraulic Pump Gp |
1 |
| 8F-0024 |
Hose As |
2 |
| C |
228-4532 |
Link |
1 |
| D |
4C-6486 |
Stand |
2 |
| 8S-7621 |
Tube |
2 |
| 8S-7625 |
Collar |
2 |
| 8S-7615 |
Pin |
4 |
| 8S-7650 |
Cylinder As |
2 |
| 4C-5809 |
Electric Hydraulic Pump Gp |
1 |
| 6D-7726 |
Hose As |
2 |
| FT-2765 |
Support Beam As |
1 |
| E |
1U-6228 |
Reaction Arm |
1 |
| 1U-6221 |
Hydraulic Torque Wrench Gp |
1 |
| F |
1U-7505 |
Hydraulic Jack |
1 |
Start By:
- Remove the bucket. Refer to Disassembly and Assembly, "Bucket - Remove".
- Remove the travel motors. Refer to Disassembly and Assembly, "Travel Motor- Remove".
Note: Cleanliness is an important factor. Before the disassembly procedure, the exterior of the component should be thoroughly cleaned. This will help to prevent dirt from entering the internal mechanism.
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| NOTICE |
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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 Dealer Service Tool Catalog" for tools and supplies suitable to collect and contain fluids on Caterpillar products. Dispose of all fluids according to local regulations and mandates. |
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Personal injury can result from hydraulic oil pressure and hot oil. Hydraulic oil pressure can remain in the hydraulic system after the engine has been stopped. Serious injury can be caused if this pressure is not released before any service is done on the hydraulic system. Make sure all of the work tools have been lowered to the ground, and the oil is cool before removing any components or lines. Remove the oil filler cap only when the engine is stopped, and the filler cap is cool enough to touch with your bare hand. |
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Note: Put identification marks on all lines, on all hoses, on all wires, and on all tubes for installation purposes. Plug all lines, hoses, and tubes. This helps to prevent fluid loss and this helps to keep contaminants from entering the system.
- Release the track tension. Refer to Operation and Maintenance Manual, "Track - Adjust".
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| Illustration 1 | g01167520 |
- Reinstall bucket pin (1) and retract stick (2) in order to lower the boom and stick (2) onto Tooling (B), as shown.
- Release the hydraulic system pressure. Refer to Disassembly and Assembly, "Hydraulic System Pressure - Release".
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| Illustration 2 | g00944947 |
- Remove the cap from the hydraulic tank. Install Tooling (A) onto the hydraulic tank. Attach an air supply hose to Tooling (A). Apply 276 to 414 kPa (40 to 60 psi) of air. This procedure will pull vacuum on the hydraulic system.
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| Illustration 3 | g01181268 |
- Attach a suitable lifting device to boom cylinder (7). The weight of boom cylinder (7) is approximately 254 kg (560 lb). Disconnect grease hose assembly (3). Remove bolts (4) and plate (5). Push in pin (6) (not shown) in order to remove boom cylinder (7) .
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| Illustration 4 | g01190330 |
- Disconnect hose assemblies (10). Remove bolt (8) and pin (9). Remove boom cylinder (7) .
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| Illustration 5 | g01181267 |
- Measure the distance from the outside of the boom cylinder pins in order to adjust Tooling (C) to the correct length for your machine. Install Tooling (C). The weight of Tooling (C) is approximately 249 kg (550 lb). Reinstall pin (9) and bolt (8). Refer to illustration 4. Reposition pin (6). Install plate (5) and bolts (4). Apply a slight pressure on Tooling (B) (not shown) in order to support the machine.
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| Illustration 6 | g01182427 |
- Use Tooling (F) in the presence of mud. Mud will increase the weight of lower cover (12) and upper cover (13). Remove bolts (11). Slide lower cover (12) toward upper cover (13) .
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| Illustration 7 | g01181591 |
- Disconnect hose assemblies (14). Remove fittings (15) and bolts (16) from the swivel.
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| Illustration 8 | g01167540 |
- Install Tooling (D) under the rear of the machine, as shown. Apply slight pressure to Tooling (D) and Tooling (B) in order to support the weight of the upper frame.
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| Illustration 9 | g01181607 |
- Disconnect grease hose assembly (17) and the clips from swing bearing (18). Use Tooling (E) in order to remove bolts (19) .
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| Illustration 10 | g01190420 |
- Use Tooling (B) and Tooling (C) to carefully raise upper frame (20) from the undercarriage frame in increments of 6.4 mm (0.25 inch). Raise the upper frame until swing pinion (21) clears swing gear (22) .
Note: The upper frame must be raised in small steps.
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| Illustration 11 | g01181758 |
- Attach a suitable towing device to undercarriage frame (23), as shown. Use the suitable towing device and slowly pull undercarriage frame (23) away from the upper structure.
