BendPak HD-14, Installation And Operation Manual

Page: 35 / 48

35
LIFT WILL NOT RAISE
POSSIBLE CAUSE
1. Air in oil, (1,2,8,13)
2. Cylinder binding, (9)
3. Cylinder leaks internally, (9)
4. Motor run backward under pressure, (11)
5. Lowering valve leaks, (3,4,6,10,11)
6. Motor runs backwards, (7,14,11)
7. Pump damaged, (10,11)
8. Pump won’t prime, (1,8,13,14,3,12,10,11)
9. Relief valve leaks, (10,11)
10. Voltage to motor incorrect, (7,14,11)
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. Bleed cylinders. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . See Installation Manual
3. Flush- Release valve to get rid of. . . . . . . . . . . . . . . . . . . . . Hold release handle down and start unit allowing
possible contamination it to run for 15 seconds.
4. Dirty oil. . . . . . . . . . . . . . . . . . . . . . . . . . . . .. . . . . . . . . . . . Replace oil with clean Dexron ATF.
5. Tighten all fasteners. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Tighten fasteners to recommended torques.
6. Check for free movement of release. . . . . . . . . . . . . . . . . . . If handle does not move freely, replace bracket
or handle assembly.
7. Check motor is wired correctly. . . . . . . . . . . . . . . . . . . . . . . Compare wiring of motor to electrical diagram on
drawing.
8. Oil seal damaged or cocked . . . . . . . . . . . . . . . . . . . . . . . . .Replace oil seal around pump shaft.
9. See Installation Manual . . . . . . . . . . . . . . . . . . . . . . . . . . . . Consult Lift Manufacturer.
10. Replace with new part . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Replace with new part.
11. Return unit for repair . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Return unit for repair.
12. Check pump-mounting bolts . . . . . . . . . . . . . . . . . . . . . . . . Bolts should be 15 to 18 ft. lbs.
13. Inlet screen clogged . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Clean inlet screen or replace.
14. Check wall outlet voltages and wiring . . . . . . . . . . . . . . . . . .Make sure unit and wall outlet are wired properly.