-34-
For Machines Mfd. Since 12/20
South Bend Tools
Model SB1112
TROUBLESHOOTING
Ram does not
move.
1.
Hydraulic pump OFF.
1.
Verify START button has been pressed and WORK
LAMP light is ON.
2.
Pressure set too low for task.
2.
Adjust pressure valve to appropriate PSI for
operation (Page 27).
3.
Hydraulic oil level too low.
3.
Fill hydraulic tank to proper level (Page 19).
4.
Obstruction in hydraulic line.
4.
Check hydraulic lines for obstructions.
5.
Motor coupler at fault.
5.
Access coupler and tighten/replace.
6.
Hydraulic pump at fault.
6.
Replace hydraulic pump.
7.
Pressure adjustment valve at fault.
7.
Replace pressure adjustment valve.
8.
Hydraulic ram at fault.
8.
Replace hydraulic ram.
9.
Motor at fault.
9.
Replace motor.
10.
Hydraulic pump at fault.
10.
Replace hydraulic pump.
Ram moves
slowly or applies
insufficient
pressure.
1.
Pressure set too low for task.
1.
Adjust pressure adjustment valve to appropriate
PSI for operation (Page 27).
2.
Hydraulic system leaking.
2.
Locate source of leak and repair/replace leaking
part.
3.
Hydraulic filter clogged.
3.
Replace hydraulic filter.
4.
Obstruction in hydraulic line.
4.
Check hydraulic lines for obstructions.
5.
Pressure adjustment valve at fault.
5.
Replace pressure adjustment valve.
6.
Ram direction valve at fault.
6.
Replace ram direction valve.
7.
Ram seals at fault.
7.
Replace ram seals.
8.
Motor at fault.
8.
Replace motor.
9.
Hydraulic pump at fault.
9.
Test/replace hydraulic pump.
Ram moves
erratically.
1.
Air present in hydraulic system.
1.
Bleed hydraulic system (Page 32).
2.
Hydraulic oil level too low.
2.
Fill hydraulic tank to proper level (Page 19).
3.
Hydraulic system leaking.
3.
Locate source of leak and repair/replace leaking
part.
4.
Hydraulic oil contaminated.
4.
Drain and replace hydraulic oil (Page 32).
Symptom
Possible Cause
Possible Solution
Motor operates in
reverse.
1.
Motor is wired out of phase.
1.
Swap two incoming power leads (Page 36).
