Usage:
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. |
- 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.
- b. Adjust the position of the bucket so it will be flat on the ground when the boom is lowered.
1. Release the pressure in the hydraulic system as follows:
2. Open the right rear access door.
3. Disconnect hose assembly (1) from the side of the hydraulic oil tank.
4. Remove bypass check valve assembly (2) from the side of the hydraulic oil tank.
5. Remove O-ring seal (3) from the bypass check valve assembly.
6. Remove two screws (4). Remove flange (5) and bypass check valve (6) from flange (7). Remove the O-ring seal from flange (7).
NOTE: The following steps are for the installation of the bypass check valve.
7. Check the condition of the O-ring seals used in the bypass check valve assembly. If the seals are worn or damaged, use new parts for replacement.
8. Install the bypass check valve in the reverse order of removal.
9. Check the oil level in the hydraulic oil tank. If necessary, fill the hydraulic oil tank to the correct level. See the Operation & Maintenance Manual for the correct filling procedure.