19
Model 72400
Repair
or
Replace
Repair
or
Replace
Inspect
System
Relief Valves
Repair
or
Replace
Defective
Ok
Ok
Defective
Defective
1
2
3
Symptom: Operates in One Direction Only
Inspect
External
Control Linkage
Inspect
Control Valve
Ok
Replace
Pump
Inspect
Control
Valve
Inspect
Bypass Valve
(If used)
Repair
or
Replace
Defective
Ok
Ok
Ok
11
2
8
Symptom: System Response Sluggish
Check
Charge
Pressure
Low
Defective
Repair
or
Replace
Inspect
Motor
Ok
13
Inspect
Servo
Piston
4
Ok
Replace
Pump & Motor
Repair
or
Replace
Defective
Repair
or
Replace
Defective
Inspect
Inlet
Screen or Filter
Inspect
Charge
Pump
Repair
or
Replace
Defective
Ok
Ok
Ok
12
9
14
Inspect
Charge Relief
Valve
Clogged
Replace
Defective
Repair
or
Replace
Fault - Logic
Trouble Shooting