Toro Outcross 9060 Service Manual page 143

Attachment/Loader Circuit Testing – Gear Pump (P3) Flow Test
(continued)
Outcross 9060
18234SL Rev B
Do not fully restrict oil flow through the hydraulic tester. In this test,
the hydraulic tester is positioned before the circuit relief valve and
pump damage can occur if the oil flow is fully restricted.
9. Watch pressure gauge carefully while slowly closing the flow control valve
until 6895 kPa (1000 PSI) is obtained. Verify with the Status Display that the
engine is still running at the correct high idle speed (3000 RPM).
10. Record the tester flow reading then open the tester flow control valve and
stop the engine.
11. Gear pump (P3) flow should be between 44 LPM (12 GPM) and 41 LPM
(10.5 GPM).
12. If a pressure of 6895 kPa (1000 PSI) cannot be obtained or flow was less
than 41 LPM (10.5 GPM), check for a restriction in the pump inlet line. If inlet
line is not restricted, the gear pump section is worn or damaged and should
be service or replaced.
Note: Gear pumps (P3) and (P4) must be serviced or replaced together.
13. The hydraulic tester can be used to test the circuit relief pressure:
A. Disconnect any attachment from the rear hydraulic supply lines.
B. Make sure the flow control valve on the tester is fully open.
C. Start engine and increase engine speed to (2300 RPM).
D. Shift the auxiliary load valve into the A or B position (forward or reverse).
E. The hydraulic tester pressure reading should be 20,684 to 24,131 kPa
(3000 to 3500 PSI).
F. Release the joystick, stop the engine and record the test results.
G. If circuit relief pressure reading is incorrect, clean, repair or replace the
auxiliary load valve relief valve; refer to
(page 5–105).
14. After testing is complete, remove the hydraulic tester and any additional
hoses or fittings installed for testing. Install the disconnected hydraulic hose;
refer to Installing Hydraulic Hoses and Tubes (O-Ring Face Seal) (page
IMPORTANT
Page 5–47 Hydraulic System: Testing the Hydraulic System
Auxiliary Load Valve Service
5–8).