Tennant ATLV 4300 Service Manual page 157

Model 70160
Fault - Logic Troubleshooting
Symptom: Operates in One Direction Only
Inspect
External Control
Linkage
1
Defective
Repair
or
Replace
Symptom: System Response Sluggish
Check
Charge
Pressure
10
Low
Inspect
Charge Relief
Valve
11
Defective
Repair
or
Replace
Inspect
OK
Servo Control
(If used)
2
Defective
Repair
or
Replace
Inspect
OK
Servo Control
(If used)
2
Defective
Repair
or
Replace
Inspect
OK
Inlet Screen
or Filter
8
Clogged
Replace
Inspect
OK
System Relief
Valves
3
Defective
Repair
or
Replace
Inspect Pump
OK
Bypass Valve
(If used)
7
Defective
Repair
or
Replace
Inspect
OK
Charge
Pump
13
Defective
Repair
or
Replace
15
Inspect
OK
Motor
12
Defective
Repair
or
Replace
Replace
OK
Pump &
Motor
OK