| Required Tools | |||
|---|---|---|---|
| Tool | Part Number | Part Description | Qty |
| A | 3S-6224 | Electric Hydraulic Pump | 1 |
| 9U-6752 | Receiving Sleeve | 1 | |
| 8T-4121 | Washer | 4 | |
| 1U-6750 | Receiving Sleeve | 1 | |
| 8T-4133 | Nut | 4 | |
| 6V-0014 | Cylinder | 1 | |
| M10x1.5x360mmThreaded Rod | 4 | ||
| 9U-6753 | Retainer Plate | 1 | |
| 9U-6815 | Puller Stud | 1 | |
| 9U-6810 | Nut Assembly | 1 | |
| 6V-5196 | Socket Head Screw | 3 | |
| B | 4C -6486 | Stand | 2 |
| 8S-8048 | Saddle | 2 | |
| 8S-7631 | Tube | 2 | |
| 8S-7615 | Pin | 2 | |
| C | 189-0863 | Shackle | 2 |
| D | 3S-6224 | Electric Hydraulic Pump Gp | 1 |
| 221-9575 | Adapter | 1 | |
| 9U-6751 | Sleeve | 1 | |
| 6V-3170 | Double Acting Cylinder | 1 | |
| 9U-5346 | Nut | 1 | |
| 9U-5344 | M 30 X3.5 X 415 mm Threaded Rod | 1 | |
| 9U-5344 | M 30 X 3.5 X 255 mm Threaded Rod | 1 | |
| E | 5P-0049 | Cover | 5 |
| 9U=-7085 | Cap | 5 | |
Start By:
- Remove the stick. Refer to Disassembly and Assembly, "Stick - Remove".
Note: SERVICE DATA: TOOLING (E) WILL NOT BE IDENTIFIED IN PHOTOGRAPHS IN THE REMOVAL OR THE INSTALLATION. THIS TOOLING IS SHOWN IN ORDER TO ASSIST THE EXPERIENCED SERVICEMAN.
Note: Put identification marks on all hoses, on all hose assemblies, on all wires, and on all tube assemblies for installation purposes. Plug all hose assemblies and all tube assemblies. This helps to prevent fluid loss, and this helps to keep contaminants from entering the system.
| 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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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 work tool 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. |
- Lower the boom to the ground.
- Release the hydraulic system pressure. Refer to Disassembly and Assembly, "Hydraulic System Pressure - Release".
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Illustration 1 g00574959 - Disconnect lubrication hose assembly (1).
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Illustration 2 g00574971 Typical Example - Fasten a lifting sling and a hoist to boom cylinder (4).
- Remove bolts (2). Remove retainer plate (3) and the spacer.
- Repeat Step 5 in order to remove the retainer plate on the opposite boom cylinder.
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Illustration 3 g00574967 Show/hide table
Illustration 4 g00574970 - Make sure that the threaded puller hole in the end of support pin (5) is clean. Fasten Tooling (A) to the side opposite of the boom cylinder that is being removed. Fasten a lifting sling and a hoist to Tooling (A) for support. Use Tooling (A) in order to pull support pin (5) out of the rod end of the boom cylinder.
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Illustration 5 g00574975 - Lower the boom cylinder onto Tooling (B). Adjust the height of Tooling (B) so the cylinder is level.
- Repeat Steps 3 through 8 in order to disconnect the other boom cylinder.
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Illustration 6 g00878947 - Disconnect harness assembly (6) and remove clip (7).
- Disconnect hose assemblies (8).
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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 attachments have been lowered, 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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Illustration 7 g00879121 - Use a hoist, lifting slings, and Tooling (C) to support the boom. The weight of the boom is approximately
8165 kg (18,000 lb) .Show/hide table
Illustration 8 g00879114 - Remove bolt (10) from pin assembly (9).
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Illustration 9 g00879172 - Make sure that the threaded puller hole in pin assembly (9) is clean. Use a lifting sling and a hoist to support Tooling (D). Fasten Tooling (D) to pin assembly (9). Use the threaded rod that is
415 mm (16.3 inch) in length to move the pin assembly approximately150 mm (6.0 inch) . Use the threaded rod that is255 mm (10 inch) in length to remove the pin assembly. The weight of pin assembly (9) is approximately59 kg (130 lb) . The weight of Tooling (D) is approximately64 kg (140 lb) . - Repeat Step 14 in order to remove the other pin assembly from the boom.
- Remove the boom from the machine. The weight of the boom and of the stick cylinder is approximately
8165 kg (18,000 lb) . The weight of a long reach boom is approximately9525 kg (21,000 lb) .Note: Machines may be equipped with shims between the boom and the frame at the pin joint.
- Remove the shims (if equipped) at the connection point of the boom and frame.
