CYLINDER & SEAL GP-BUCKET 3852834 - Caterpillar

At operating temperature, the hydraulic oil is hot and under pressure. Hot oil can cause burns. Sudden movement of the machine or release of oil pressure can cause injury to persons on or near the machine. To prevent possible injury, perform the following procedure before working on the hydraulic and steering systems.
a. Move the machine to a smooth horizontal location. Move away from working machines and personnel. Lower all implements to the ground. Install the wheel lean pin in front axle.b. Permit only one operator on the machine. Keep all other personnel either away from the machine or in view of the operator.c. Activate the parking brake. Place all implements on the ground and put the blade in the "FLOAT" position.d. Stop the engine.e. Turn the steering wheel back and forth several times to relieve pressure in the steering accumulator.f. Carefully loosen the filler cap on the hydraulic tank to release pressure in the tank.g. Be sure all hydraulic pressure is released before any fitting, hose, or component is loosened, tightened, removed or adjusted.h. Tighten the cap on the hydraulic tank.i. The pressure in the hydraulic system must be released before lines or components can be removed.
Hydraulic pressure can exist in the hydraulic lines between the control valves and the cylinders with the engine stopped. Manually relieve pressure before working on any hydraulic circuit.
2. Disconnect the fitting on hose assembly (1). Plug the fittings in order to prevent the loss of oil, and in order to keep dirt out of the hydraulic oil system. 3. Install an appropriate floor jack under the blade tip cylinder (5) in order to prevent it from falling during removal. Remove cotter pin (3) from pin (2). Remove pin (2) from blade tip cylinder (5) and the mounting bracket. Remove one spacer and one plate (4) from each side of the pin joint. Note the positions of the spacers and plates for installation purposes. 4. Disconnect the fitting on hose assembly (6). Plug the fittings in order to prevent the loss of oil, and in order to keep dirt out of the hydraulic oil system.5. Remove bolt (7) from the blade assembly. Remove pin (8) from blade tip cylinder (5) and the mounting bracket.6. Remove blade tip cylinder (5) from the machine. The weight of blade tip cylinder (5) is 33.8 Kg (75 lb).Install Blade Tip Cylinder
1. Make sure that all components of blade tip cylinder (5) are clean prior to installation to the machine. During the installation of blade tip cylinder (5), check the condition of all the O-ring seals used in the hose assemblies that were disconnected. If any of these seals are damaged, use new parts for replacement. 2. Use an appropriate floor jack in order to position blade tip cylinder (5) to the machine. Position the rod end of blade tip cylinder (5) in the mounting bracket on the blade. 3. Install pin (8) in blade tip cylinder (5) and the mounting bracket.4. Install bolt (7) in order to