PAGE 7 OF 7
0413 IH-3934
CHANGING THE AW32 HYDRAULIC OIL
CONTINUED
7. Fill the reservoir with the new hydraulic fluid and run
the motor by pressing the UP button to prime the
pump and extend the hydraulic cylinder. Jog the UP
button to slowly extend the cylinder until the hole in
the cylinder rod lines up with the holes in the cylinder
mounting clevis. Replace the upper cylinder pin and
corresponding snap ring.
8. Raise the lift to its maximum height and disengage
the maintenance bars. Completely raise and lower
the lift 3 times to remove any trapped air from the
hydraulic system.
9. Completely raise the lift and engage the
maintenance bars. Recheck the fluid level
as detailed in the "Monthly Inspection and
Maintenance" section. (See Page 6) The lift is
now ready for use.
MAINTENANCE CONTINUED
TROUBLESHOOTING
PROBLEM
CAUSES
RECOMMENDATIONS
Forks will not raise
(pump running)
No hydraulic fluid in reservoir.
Load too heavy (relief valve operating).
Lowering valve held open.
Fill reservoir.
Reduce load.
Check lower control for malfunction.
Clean and/or replace lowering solenoid.
Platform will not remain
elevated
Lower valve held open.
Pump check valve not seated.
Check lower control for malfunction.
Clean and/or replace lowering solenoid.
Clean/repair/replace valve.
Flush outlet check.
Platform will not lower
Platform or scissors obstruction.
Lowering valve not opening.
Obstruction in flow limiting valve.
Remove obstruction or reposition lift.
Clean and/or replace lowering solenoid.
Flush flow limiting valves.
Platform lowers too slowly
Lowering valve not opening completely.
Obstruction in flow limiting valve(s).
Clean and/or replace lowering solenoid.
Flush flow limiting valve(s).
Cylinder(s) leaking
Cylinder seals worn or damaged.
Valves, fitting or hoses loose.
Repack cylinder(s).
Tighten valves, fittings or hoses.
Pump leaking
Reservoir overfilled with oil.
Hose or fitting loose.
Drain excess fluid.
Tighten fittings or hoses.
Spongy platform
Air in hydraulic circuit.
Raise and lower platform several times
to remove air and check fluid level.
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