4 — MAINTENANCE
4-15
4-6 TROUBLESHOOTING
Table 4-3. Troubleshooting Chart
Problem Cause Correction
1. Green WHEEL UP/BASE SET
button will not light.
a. Base not firmly set on footpads.
b. *Low voltage.
c. Burned out bulb.
d. Lift is out of level.
e. Broken or loose wire.
a. Depress
WHEEL UP/BASE SET button
raising front casters. This allows lift
to firmly set on footpads.
b. Check incoming power line.
c. Replace bulb.
d. Level lift with two adjusting foot pads
or relocate lift to level surface.
e. Repair or replace wire.
2. When UP switch is selected,
motor runs but unit will not
lift a load.
a. More than 500 lbs. on platform.
b. N.O. (Normally Open) valve is not
being energized.
c. Emergency lowering valve is open.
d. Mast sections are dirty.
a. Ensure load is 500 lbs. or less.
b. Check voltage at N.O. valve. If no
voltage, check for loose or broken
wire. If voltage, ensure at least 9 volts
for start solenoid operation. Check
battery and start solenoid. Repair or
replace as needed.
c. Close emergency lowering valve.
d. Clean and lubricate masts with dry
silicone.
3. Masts have excessive sway
when fully extended.
a. Plastic slide blocks are out of adjust-
ment.
a. Refer to Slide Block Adjustment in
section 4-5.
*NOTE: Smart start solenoid will not engage if voltage is low.
