YL-240 4500KG BASE PLATE CAR HOIST
Installation and operation manual
35
TROUBLE SHOOTING GUIDE
LIFT WILL NOT RAISE
POSSIBLE CAUSE
1. Air in oil, (1,7,12)
2. Cylinder binding, (8)
3. Cylinder leaks internally, (8)
4. Motor run backward under pressure, (10)
5. Lowering valve leaks, (2,3,5,9,10
6. Motor runs backwards, (6,7,10)
7. Pump damaged, (9,10)
8. Pump won’t prime, (1,7,12,13,2,11,9,10)
9. Relief valve leaks, (9,10
10. Voltage to motor incorrect, (6,13,10)
REMEDY INSTRUCTION
1.
Check for proper oil level
-
The oil level should be up to the bleed screw in the reservoir with the lift all the way down.
2.
Flush release valve
Hold release handle down and start unit allowing it to run for 15 seconds.
3.
Dirty oil -
Replace oil with clean Dexron ATF.
4.
Tighten all fasteners -
Tighten fasteners to recommended torques.
5.
Check for free movement of release -
If handle does not move freely, replace bracket or handle assembly.
6.
Check motor is wired correctly
Compare wiring of motor to electrical diagram on power unit drawing.
7.
Oil seal damaged or cocked -
Replace oil seal around pump shaft.
8.
See Installation Manual -
Contact Factory
9.
Replace with new part -
Replace with new part.
10.
Return unit for repair -
Return unit for repair.
11.
Check pump-mounting bolts -
Bolts should be 15 to 18 ft. lbs.
12.
Inlet screen clogged -
Clean inlet screen or replace.
13.
Check wall outlet voltages and wiring -
Make sure unit and wall outlet are wired properly.
LIFT LOWERS SLOWLY OR NOT AT ALL
POSSIBLE CAUSE
1. Cylinders binding, (1)
2. Release valve clogged, (5,4,2,3)
3. Pressure fitting too long, (6)
REMEDY INSTRUCTION
1.
Contact Customer Support -
Contact Customer Support.
2.
Replace with new part -
Replace with new part.
3.
Return for repair -
Return for repair.
4.
Check oil -
Use clean 10-WT hydraulic oil or Dexron automatic transmission fluid only. If ATF is
contaminated, replace with clean ATF and clean entire system.
5.
Clean release valve -
Wash release valve in solvent and blow out with air.
6.
Replace fitting with short thread lead -
Replace fitting with short thread lead.
PH 1300 232 153
HIGHLIFT
