KIT-SEAL 2050125 - Caterpillar

2. Release the pressure in the hydraulic system as follows: a. Fully retract the rod in the stick cylinder.b. Adjust the position of the bucket so it will be flat on the ground when the boom is lowered.c. Lower the boom until the bucket is flat on the ground.d. Shut off the engine, and put the hydraulic activation control lever in the "Lock" position.e. Move the control levers for the boom, bucket, stick and swing through their full travel strokes. This will relieve any pressure that may be present in the pilot system.f. Slowly loosen the air breather cap on the hydraulic oil tank to release the pressure.g. Tighten the air breather cap on the hydraulic oil tank.h. The pressure in the hydraulic system has now been released. Lines and components can now be removed. 3. Fasten a hoist to the rod end of the bucket cylinder as shown. Put a wood block (3) under the link assemblies as a support.4. Remove the two nuts and retaining bolt (1).5. Make sure the threaded puller hole in the pin (2) is clean prior to installation of Tooling (A). Fasten Tooling (A) to pin (2) as shown. Fasten a lifting sling and a hoist to Tooling (A) to support it.6. Using Tooling (A), remove pin (2). The weight of the pin is 29 kg (65 lb). 7. Raise bucket cylinder (4) until it is level; then fasten a lifting sling and a hoist to the head end of the bucket cylinder as shown. Disconnect two hose assemblies (5) from the bucket cylinder. Put plugs in the ends of the hose assemblies to prevent oil loss and to keep dirt and debris out of the hydraulic system. Disconnect the lubrication hose assembly from the bucket cylinder. 8. Remove pin assembly retaining bolt (6) and the washer.9. Make sure the threaded puller hole in the pin assembly (7) is clean prior to installation of Tooling (A). Fasten Tooling (A) to pin assembly (7). Fasten a lifting sling and a hoist to Tooling (A) to support it. Using Tooling (A), remove pin assembly (7). Remove the spacer from pin assembly (7).10. Remove bucket cylinder (4). The weight of the bucket cylinder is 363 kg (800 lb). Some machines may be equipped with shims between the stick and bucket cylinder at the stick-to-bucket cylinder pin joint. For assembly purposes, put identification marks on the shims as to their location.11. Remove the shims (if so equipped) at the stick-to-bucket cylinder pin joint. The following steps are for the installation of the bucket cylinder.12. Make sure the pin bores in the stick, link assemblies and bucket cylinder are clean and free of dirt prior to installation of the bucket cylinder.13. Fasten a hoist to bucket cylinder (4), and put it in position in the stick. Make sure the pin bores in the stick and bucket cylinder are in alignment. Also, make sure the grease fitting in the head end and rod end of the bucket cylinder