Multi Pro 5800Hydraulic System Page 5 − 42
the flow control makes no change in pressure). Do
Not exceed 1500 psi (103.4 Bar).
B. Record tester pressure.
11.Set throttle to low speed and shut off engine.
12.The under load test flow reading (step 9.B) should
not drop more than 15% when compared to the no load
test flow reading (step 8.). A difference in flow of more
than 15%, or the inability to achieve specified pressure
may indicate:
A. A restriction in the pump intake line
B. The gear pump (P2) is worn and should be re-
paired or replaced
13.The pressure relief test pressure should stabilize at
approximately 1000 psi (69 Bar). If the pressure does
not stabilize near this reading:
A. The pressure relief valve may be blocked or dam-
aged and should be replaced.
B. Gear pump P2 cannot generate adequate pres-
sure to open the relief valve (failed flow test).
14.Disconnect tester and reconnect hose to pump.
15.Start engine and run at low idle speed. Check for hy-
draulic leakage and correct before returning machine to
service.
16.Install the rear undercarriage shroud (see Undercar-
riage Shrouds in Chapter 9 − Chassis in this manual).
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