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Workman HD SeriesPage 9 − 26Hydraulic System
10.The under load test flow reading (step 7.B) should not
drop more than 15% when compared to the no load test
flow reading (step 6.A). 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. A slipping pump drive belt
C. The primary hydraulic system gear pump is worn
and should be repaired or replaced
D. If pump speed of 2270 RPM cannot be main-
tained during test, consider that engine performance
problems exist.
11. Disconnect tester and reconnect hose to pump.
12.Make sure the hydraulic reservoir (transaxle) is full
before returning the vehicle to service.
NOTE: If necessary, circuit relief valve pressure test
can be conducted with tester in the same location as for
this test (see Primary Hydraulic System Relief Valve
Pressure Test in this chapter).