
12
TROUBLE SHOOTING FOR AUTHORIZED MAINTENANCE PERSONNEL
FOR ALL Series Lifts
Cause
1. Incorrect voltage to motor.
2. Bad wiring connections.
3. Motor up switch burned out.
4. Overheadlimitswitchburnedout.
5. Motor windings burned out.
1. Overloading lift
2. Motor running on low voltage
3. Debris in lowering valve
4. Pump sucking air
5. Suction stub off pump
6. Low oil level
7. Improper relief valve adjustment
1. Debris in check valve seat.
2. Debris in lowering valve seat.
3. External oil leaks.
1. Air mixed with oil.
2. Air mixed with oil suction.
3. Oil return tube loose.
1. Equalizercablesoutofadjustment.
2. Lift installed on unlevel floor.
1. Holes drilled oversize.
2. Concrete floor thickness or
holding strength not sufficient.
1. Latch shafts rusted. (Usually
occurs on outside installations or
in high humidity areas such as
vehicle wash bays.)
1. Latch cable is broken.
2. Cable is off sheaves.
3. Latch cable is loose.
Remedy
1. Supply correct voltage to motor.
2. Repairandinsulateallconnections.
3. Replace switch/touchpad.
4. Replace switch/overhead sensor/
reflector.
5. Replace motor.
1. Check vehicle weight and/or
balance vehicle weight on lift
2. Supply correct voltage to motor
3. Clean lowering valve
4. Tighten all suction line fittings
5. Replace suction stub
6. Fill tank to proper level with
ISOVG32 hydraulic oil or Dexron
III ATF
7. Replace relief valve cartridge
1. Clean check valve.
2. Clean lowering valve.
3. Repair external leaks.
1. Change oil to Dexron III ATF
or ISOVG32.
2. Tighten all suction line fittings.
3. Reinstall oil return tube.
1. Adjust equalizer cables to correct
tension.
2. Shim lift to level columns (Not to
exceed 13mm). If over 13mm,
break out floor and level per lift
installation instructions.
1. Relocate lift using new bit to drill
holes. Reference installation
instructions for proper anchoring
method and minimum spacing
requirements.
2. Break out old concrete and re-
pour new pads for lift per lift
installation instruction.
1. Remove covers, oil latch mecha-
nism. Depress latch release
handle several times to allow oil
to coat shaft.
1. Replace cable.
2. Check position of upper sheaves.
3. Replace cable.
Trouble
Motor does not run.
Motor runs but will not raise lift
Lift slowly settles down.
Slow lifting speed or oil blowing out
filler breather cap.
Lift going up unlevel.
Anchors will not stay tight.
Locking latches do not engage.
(M Series lifts only)
Locking latches do not disengage.
(M Series lifts only)
Note: Shim thickness of 51mm is possible by using optional shim kit #FC5393. Contact your authorized Rotary
repair person.