16
EATON Hydraulics
70160 Variable Displacement Piston Pump Repair Information E-PUPI-TS005-E June 2004
Model 70160
Check External
Control
Linkage
OK
OK
OK
4
1
7
Check
Oil Level in
Reservoir
Fill to
Proper
Level
Defective
Below Level
Repair
or
Replace
Check
System
Pressure
OK
9
Inspect
Charge Relief
Valve
OK
11
Inspect
Charge
Pump 13
Inspect
Motor
12
Inspect
Inlet Screen
or Filter
Replace
Clogged
OK
8
Check
Charge
Pressure
10
Low
OK
OK
Replace
Pump &
Motor
Inspect
Servo Control
(If used)
OK
2
Inspect Pump
Bypass Valve
(If used)
OK
Defective
Repair
or
Replace
Defective
Repair
or
Replace
Defective
Repair
or
Replace
Defective
Repair
or
Replace
Defective
Repair
or
Replace
High
Reduce
System
Load
Symptom: System Will Not Operate In Either Direction
Fault - Logic Troubleshooting