 |
|
Sudden movement of the machine or release of oil under pressure can cause serious injury to persons on or near the machine. To prevent possible injury, perform the procedure that follows before testing and adjusting the hydraulic system. |
- Move the tractor to a smooth horizontal location.
- Lower all implements to the ground and lower the three-point hitch to the ground.
- Make sure that the transmission control lever is in the PARK position.
- Warm the oil to a minimum temperature of
60°C (140°F) , if necessary. - Move all of the hydraulic control levers through the FLOAT position in order to relieve the hydraulic pressure.
- Stop the engine and remove the key.
- Remove the appropriate guards.
Reference: Refer to Operations and Maintenance Manual, "Guards - Remove and Install" for more information.
When you are defining a problem in any of the hydraulic systems, the following procedure should be followed:.
Perform a visual check of the electrical system and the hydraulic system. If you complete the visual inspection and the problem is not identified, perform the mechanical system tests. If you complete the mechanical system tests and the problem is not identified, perform the electrical system tests. The troubleshooting manual lists the probable causes of a known problem.
Since more than one cause may exist for a problem, the troubleshooting section may suggest specific inspections or instrument tests. These inspections and tests will help identify the most probable cause.
Hydraulic test procedures may be performed using either one of the following test equipment:
- Dataview tool gp
- Appropriate pressure gauges
Note: During a diagnosis in any of the hydraulic systems, remember that correct oil flow and pressure are necessary for correct operation. Oil pressure is caused by resistance to the flow of oil. Oil temperature must be a minimum of