HYDRAULIC SYSTEM RT765E-2 SERVICE MANUAL
2-20
Published 9-04-2014, Control # 422-08
5. Place your hand on the pump to check for excessive
heat buildup caused by binding or other problems. If the
pump is too hot to keep a hand on, stop the engine.
Each section should feel about the same warmth, but
pressure drops in each pump section’s circuit would
explain some difference between sections.
6. Listen for abnormal noises indicating low hydraulic oil
level or internal pump problems. If the pump is making
excessive noise, it is probably sucking air into its inlet,
keeping it from priming. In case of abnormal noise, stop
engine, and inspect the pump and the suction line for a
loose connection, a leak or a damaged or missing o-ring.
7. If the pump seems to be running properly, increase the
rpm to 1500 to 1800 rpm for one to two minutes while
operating no hydraulic functions. Repeat checks in steps
4, 5, and 6.
8. Increase engine speed in steps to full RPM. Repeat
checks in steps 4, 5, and 6.
9. Cycle the components the pump sections power to verify
the pump sections drive them properly. Verify there is no
leaking.
10. Check pressure settings. Refer to Pressure Setting
Procedures, page 2-23.
FIGURE 2-4
1
2
4
5
3
6927-3
6927-4
Reference Only
To Next Page
Loading...
Need help?
General
