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22
TROUBLE SHOOTING
Trouble
Cause
Remady
Motor does not run.
Cause
1.Blown fuse or circuit breaker.
2.Incorrect voltage to motor.
3.Bad wiring connections.
4.Motor up switch burned out.
5.Overhead limit switch burned out.
6.Motor windings burned out.
1.Replace blown fuse or reset circuit
breaker.
2.Supply correct voltage to motor.
3.Repair and insulate all connections.
4.Replace switch.
5.Replace switch.
6.Replace motor.
Motor runs but will not
raise lift.
1. Open lowering valve.
2. Pump sucking air.
3. Suction stub off pump.
4. Low oil level.
1. Repair or replace lowering valve.
2. Tighten all suction line fittings.
3. Replace suction stub.
4. Fill tank to proper level with ISOVG32
Hydraulic Oil or Dexron III ATF.
M o t o r r u n s — r a i s e s
unloaded lift but will not
raise vehicle.
1. Debris in check valve seat.
2. Debris in lowering valve seat.
3. External oil leaks.
1. Supply correct voltage to motor.
2. Clean lowering valve.
3. Replace relief valve cartridge.
4.Check vehicle weight and/or balance
vehicle weight on lift.
Lift slowly settles down.
1.Air mixed with oil.
2.Air mixed with oil suction.
3.Oil return tube loose.
1.Clean check valve.
2.Clean lowering valve.
3.Repair external leaks.
Slow lifting speed or oil
blowing out filler breather
cap.
1.Equalizer cables out of adjustment.
2.Lift installed on unlevel floor.
1.Change oil using ISOVG32 Hydraulic
Oil or Dexron III ATF.
2.Tighten all suction line fittings.
3.Reinstall oil return tube.
Lift going up unlevel.
1.Concrete floor thickness or holding
strength not sufficient.
1.Adjust equalizer cables to correct
tension.
2.Shim lift to level columns (Not to
exceed 1/2”). If over 1/2” break out
floor and repour per lift installation
instructions.
0496-M004-0
