Chapter 12 – Troubleshooting
40 TM12 – 8210027
Symptom
Platform will not raise, or raises
slower than normal.
Platform drifts down.
Drive functions don’t work.
Only slow drive speed works.
Machine will not steer.
Wheels won’t turn when
winching or pushing.
Brakes don’t work.
Tilt alarm does not work.
Battery charge indicators do not
indicate a reading when charg-
ing the batteries.
Possible Cause
Emergency lowering knob not prop-
erly disengaged.
Platform capacity has been ex-
ceeded.
Low battery charge.
Emergency lowering knob not prop-
erly disengaged.
Hydraulic system malfunction.
Drive/lift selector is in the lift posi-
tion.
Machine is not on a level surface or
too steep a grade.
Load capacity exceeded.
Low hydraulic system pressure.
Platform elevated above 3′ (0.9 m).
Joystick interlock switch not en-
gaged.
Brakes are engaged.
Brake are not fully engaged.
Platform is not raised more
than
3′ (0.9 m)
.
No source of power.
Charger power fuse is blown.
Corrective Action
Make sure the knob returns to the
normal operating position.
Remove items from platform to ob-
serve the rated work load of 500 lb
(227 kg).
Check the battery charge indicator
and recharge the batteries if neces-
sary.
Make sure the knob returns to the
normal operating position.
Stow the machine and do not operate
until repairs are made.
Place the switch in the drive posi-
tion.
Lower the platform and drive to a
level surface.
Remove load from platform. Refer to
platform capacity placard for maxi-
mum capacity.
Stow the machine and do not operate
until repairs are made.
Lower platform to drive machine at
faster speed.
Engage the interlock switch before
operating the steer switch.
Manually release the brake pads by
removing the spring compression nut
(refer to Figure 10.2) so the spring
is loose and the brake pads are not
touching the tires.
Replace the spring compression nut
and/or tighten it until the spring mea-
sures 8 ¾″ to 9″ (22.2 cm to 22.9 cm)
in length (refer to Figure 11.2).
Normal operation. The tilt alarm is
not active until the platform is raised
more than
3′ (0.9 m)
.
Make sure power source is plugged
in and turned on.
Stow the machine and do not operate
until repairs are made.
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