TM 5-3895-356-14&P
Model 45 Pump
RPM
Mm GPM
Max GPM
Max Case Leakage
1780
32.25min
34.5max
1.2GPM
.1 GPM is allowable for case drain increase after 4500 psi run
If unit has more than 1 GPM increase, run an
additional overload run (10 min, 1180 RPM, 4500 psi) Recheck the case dram flow If the flow remains the same, or
drops, and is within the allowable limits, the unit is acceptable
3 Detent Adjustment
Position detent lever in neutral and run at 1180 RPM Close
pressure valve torque equal pressure at both discharge port pressure gauges Tighten detent lever bolts Open pressure
valve and move the detent lever forward. Return detent lever to neutral and check for equal pressures at discharge
ports Repeat this in reverse position, return to neutral and recheck Readjust detent plate if necessary Reconnect sense
tubes and set control.
C Motor Schedule (Test as a Pump)
1. Adjust reservoir pressure to approximately 160 psig Adjust high pressure relief valve pilot to permit operation to 5000
psi
3 Start electric drive motor and adjust speed to meet the following schedule, measuring flows and case leakage where
indicated
PSI
Oil Temp
Time
RPM
5min
1180
500
1400 F.
5 min
1780
1000
1400 F.
10 min
1780
3000
1400 F.
Measure Flow
1780
3000
1400 F.
10min
1180
4500
1400 F.
Measure Flow
1780
3000
1400 F.
Reverse rotation and repeat above schedule
Measured flow must meet the following requirements
RPM
Min GPM
Max GPM
Max Case Leakage
1760
Model 48
Fixed Motor
1.0 GPM
34.6 min
37.2 max
.1 GPM is allowable for case drain Increase after 4500 psi run If unit has more than 1 GPM increase, make an additional
overload run (10 min, 1180 RPM, 4500 psi) Recheck the case dram flow If the flow remains the same, or drops, and Is
within the allowable limits, the unit is acceptable.
4. While operating at 1180 50 RPM, close discharge valve and set high pressure relief valve pilot 100 50 psig above
the value Indicated on the name tag. (For example, 896000-45 Indicates a 4500 psi relief valve setting, 89600040
indicates a 4000 psi relief valve setting, and so forth) Cycle 10-12 times between relief valve cut off point and 2000 psi
below Allow temperature to return to 1400 and check cut off point If setting has changed, reset to 100 50 psi above
required setting and repeat above cycling conditions, rechecking to insure that the setting Is maintained.
5. If motor has an override control and no cam stop or a 0 cam stop, connect sense tubes and adjust as outlined on
Page 35, Item C.
If motor has an override control and a cam stop other than a 0, a special test procedure is required
D Pump and Motor Cover Break-in
1. When replacing the cover on a pump or motor, the following break-in procedure must be followed to insure maximum
performances from the new cover
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