6
TROUBLE SHOOTING
Trouble
Motor does not run.
Motor runs but will not raise lift.
Motor runsraises unloaded lift but
will not raise vehicle.
Lift slowly settles down.
Slow lifting speed or fluid blowing out
filler breather cap.
Lift going up unlevel.
Lift stops short of full rise or
chatters.
Anchors will not stay tight.
Lift will not lower.
Remedy
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 motor.
1. Repair or replace lowering valve.
2. Tighten all suction line fittings.
3. Replace suction stub.
4. Fill tank with Dexron III ATF.
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 lifts.
1. Clean check valve.
2. Clean lowering valve.
3. Repair external leaks.
1. Change hydraulic fluid to Dexron
III ATF.
2. Tighten all suction line fittings.
3. Reinstall fluid return tube.
1. Adjust slack out of cable.
2. Shim lift to level columns (Not to
exceed
1
/
2
" per column).
Note: Shim thickness of 2" is possible
by using optional shim kit
#FC5393. Contact your authorized
Rotary Parts Distributor for
ordering information.
Check fluid level and bleed cylinder
If fluid is required inspect all fit-
tings, hoses, and seals. Repair as
required. Clean power unit pickup
stub filter.
1. Use a fast setting cement to pour
into oversize holes and reset
anchors -or- relocate lift using a
new bit to drill holes.
2. Break out old concrete and repour
new pads for lift.
1. Check air pressure. Air supply to
lift should be between: min. 90
p.s.i. and max. 120 p.s.i. Check all
lines and fittings for leaks or
crimps. Repair or replace as
required.
2. Check latches
Cause
1. Check fuse or circuit breaker.
2. Check for correct voltage to motor.
3. Inspect all wiring connections.
4. Switch burned out.
5. Motor windings burned out.
1. Open lowering valve.
2. Pump sucking air.
3. Suction stub off pump.
4. Low fluid level.
1. Motor running on low voltage.
2. Trash in lowering valve.
3. Improper relief valve adjustment.
4. Overloading lift.
1. Trash in check valve seat.
2. Trash in lowering valve seat.
3. External fluid leaks.
1. Air mixed with fluid.
2. Air mixed with fluid suction.
3. Fluid return tube loose.
1. Cables out of adjustment.
2. Lift installed on unlevel floor.
Low on fluid.
1. Holes drilled oversize.
2. Concrete floor thickness or holding
strength not sufficient.
1. Insufficient air supply to lift.
2. Latches out of adjustment.
To Next Page
Loading...
Need help?
General
