23
OPERATIONS MAINTENANCE - PROBLEMS WITH HYDRÁULICS SYSTEM
Hydraulic cylinder leaks
Dirty oil High working pressure Replace oil and fi lters Adjust the pressure using a manometer,
the manufacturer recommends
Damaged seal rings Shank damaged. 180kg/cm2. Replace the seal rings. Replace the shanks
Reparos danifi cados. Substituir os reparos.
Haste danifi cada.* Substituir a haste.
Leaks in the hoses
with the connector
SAE JIC 37.
The conical device damaged. Cut of the hoses and install again.
Tighten not enough. Re-tighten carefully.
The implement is not moving or
moving too slow
Problem in tractor hydraulic system. Inspect and use a right tractor.
The oil level is low. Fill the oil.
Hoses reversed. Inspect the system and install the hoses in right position.
The hydraulic cylinder is damaged. Replace the hydraulic cylinder.
The hydraulic command pressure not enough Replace oil and fi lters Adjust the pressure using a manometer, the manufacturer
recommends 180kg/cm2.
The connectors pressure is not the same. Adjust and replace when necessary.
Hydraulic hoses clogged or damaged. Inspect and replace when necessary.
The equipment is moving
without use the hydraulic
controls
Seals rings are damaged. Replace the seal rings.
Hydraulic cylinder seal rings damaged. Inspect the hydraulic cylinder and replace seal device.
The nuts are loosen Tighten the hydraulic cylinder bolts carefully.
There is not enough seal tape. Use enough seal tape.
The quick-coupler not
connect.
The quick-coupler has different models. Use the same kind of quick-coupler.
Leaks in the hoses or
connector.
Not enough seal tape. Use enough seal tape.
The connector is not tighteen. Re-tighten carefully.
PROBLEM POSSIBLE CAUSE SOLUTION
TABLE 05