NOZZLE AS 1761948 - Caterpillar

Start By:a. remove bucket1. Start the engine. Extend the stick, and lower it to the ground.
At operating temperature, the hydraulic oil tank is hot and under pressure. Hot oil can cause burns. To prevent possible personal injury, release the pressure in the implement hydraulic circuits (boom, stick and bucket) before any hydraulic lines or components are disconnected or removed.
2. Release the pressure in the hydraulic system as follows: a. Shut off the engine, and put the hydraulic activation control lever in the "Lock" position.b. 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.c. Slowly loosen the air breather cap on the hydraulic oil tank to release the pressure.d. Tighten the air breather cap on the hydraulic oil tank.e. The pressure in the hydraulic system has now been released. Lines and components can now be removed. 3. Install tool (A) under the front of the boom to support it.4. Fasten a lifting strap and a hoist to the rod end of the stick cylinder as shown.5. Remove pin assembly retaining bolt (1) and the washer.6. Using tooling (B), remove pin assembly (2) and spacer (3). Put a small wood block under the rod end of the stick cylinder, and lower the cylinder onto the wood block. Tie the rod in the stick cylinder back so it can not extend.7. Reinstall pin assembly (2) and pin assembly retaining bolt (1) and the washer back in the stick pin bore.8. Fasten lifting straps and a hoist to the stick. Fasten the hoist at pin assembly (2) and the bucket link assembly for the bucket as shown.9. Disconnect two hose assemblies (4) from the stick.10. Remove pin assembly retaining bolt (5) and the washer from pin assembly (6). 11. Be sure the threaded puller hole in pin assembly (6) is clean prior to installation of tooling (F). Fasten tooling (F) to pin assembly (6). Fasten a lifting strap and a hoist to tooling (F) to support it.12. Using tooling (F), remove pin assembly (6) far enough until the stick is free of the boom. Do not remove pin assembly (6) completely out of the boom.13. Remove tooling (F) from pin assembly (6). Remove pin assembly (6) by hand. The weight of the pin assembly is 41 kg (90 lb). Stick weights can range from approximately 963 to 1324 kg (2123 to 2919 lb).14. Carefully separate the stick from the boom. The combined weight of the stick, bucket cylinder and bucket linkage group is approximately 1633 kg (3600 lb). Some machines may be equipped with shims between the stick and boom