P16, P20, P25, P28, P40 and P60 Pulverizers Caterpillar

Removal Procedure

Start By:

1. Close the jaws of the work tool and remove the work tool from the host machine. Refer to Operation and Maintenance Manual, GEBJ0067, "Pulverizer Attachment - Remove and Install". Install a small block of wood between the jaws in order to relieve the tension on the lower cylinder pin.

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Hot oil and components can cause personal injury. Do not allow hot oil or components to contact skin.

1. Ensure that the work tool is resting on a hard, level surface.

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2. Position the work tool with crushing arm (1) at the top.

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3. Install lock pin (2) in order to prevent the work tool from rotating.

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4. Remove the six bolts and the washers that secure cover (3) to the housing. Remove the cover from the work tool.

5. Put identification marks on all hoses for installation purposes. Plug all hoses in order to help prevent fluid loss and contamination of the fluid system.

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6. Remove eight bolts, the washers, and four half flanges that secure two hose assemblies (4) to the cylinder. Remove the O-ring seals from the hoses. Position the hose assemblies out of the way. Remove hose assembly (5) .

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7. Attach an appropriate nylon lifting sling and a hoist to cylinder (6). The weight of the cylinder is 449 kg (990 lb).

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8. Remove two bolts (7) and the washers that secure plate (8) to the crushing arm.

9. Use Tooling (A) in order to remove plate (8) .

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10. Use a hammer and a brass drift to partially remove pin (9). Attach an appropriate nylon lifting sling and a suitable lifting device to the head of the pin. Tap the pin until another lifting sling can be installed at the tail end of the pin. Ensure that the area behind the pin is free of personnel. Tap the pin slowly until the pin is free. Avoid heavy tapping with the hammer in order to prevent swinging of the pin. Lower the pin to the ground and remove the lifting slings. The weight of the pin is 33 kg (73 lb).

11. Remove two spacers (10) from cylinder (6).

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12. Remove two bolts (11) and the washers that secure plate (12) to the lower housing.

13. Use Tooling (A) in order to remove plate (12) .

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14. Use a large hammer and a brass drift to remove pin (13). Place some shop towels below the pin for a cushion. The weight of the pin is 43 kg (95 lb).

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15. Remove two spacers (14) from cylinder (6) .

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16. Remove hydraulic cylinder (6) from the work tool.

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17. Inspect cylinder bearing (15) for wear or for damage. If necessary, remove two retaining rings (16). Use an appropriate sized driver and a hydraulic press to remove the cylinder bearing from the cylinder. Repeat this step for the other cylinder bearing.