Troubleshooting - MULTIQUIP J36E2 Operation And Parts Manual

Symptom
Electric motor will not start.
Electric motor continuously stops.
Electric motor RPM's too low.
Electric motor RPM's too high.
Symptom
Trowel bounces, rolls concrete, or makes
uneven swirls in concrete.
Machine has a perceptible rolling motion
while running
J36E2 ELECTRIC WALK-BEHIND TROWEL • OPERATION AND PARTS MANUAL — REV. #1 (8/27/15) — PAGE 31
Troubleshooting (Electric Motor)
Possible Cause
Is there power?
Is power cable plugged in?
Is ON/OFF switch placed in ON
position?
Defective cable?
Reset button OK?
Low voltage?
High voltage?
Troubleshooting (Walk-Behind Trowel)
Possible Problem
Blades?
Pitch adjustment?
Bent trowel arms?
Spider?
Thrust collar?
Thrust collar bushing?
Thrust bearing worn?
Main shaft?
Yoke?
Blade Pitch?

TROUBLESHOOTING

Solution
Check power source. Check reset
button.
Plug in power cable.
Place ON/OFF switch in ON position.
Check cable.
Check power source.
Check input voltage.
Check input voltage.
Solution
Make certain blades are in good condition, not
excessively worn. Finish blades should measure
no less than 2"" (50mm) from the blade bar to
the trailing edge, combo blades should measure
no less that 3.5"" (89mm). Trailing edge of blade
should be straight and parallel to the blade bar.
Check that all blades are set at the same
pitch angle as measured at the spider. A fi eld
adjustment tool is available for height adjustment
of the trowel arms. (Contact Parts Dept.)
Check the spider assembly for bent trowel arms.
If one of the arms is even slightly bent, replace it
immediately.
Check fi t of arms in spider. This can be done by
moving the trowel arms up and down. If there is
more than 1/8 inch (3.2 mm) of travel at the tip of
the arm, the spider and arms should be replaced.
Check the fl atness of the thrust collar by rotating
it on the spider. If it varies by more than 0.02 inch
(0.5 mm) replace the thrust collar.
Check the thrust collar by rocking it on the spider.
If it can tilt more than 3/32 inch (2.4 mm) - as
measured at the thrust collar O.D., replace the
thrust collar.
Check the thrust bearing to see that it is spinning
freely. Replace if necessary.
The main output shaft of the gearbox assembly
should be checked for straightness. The main
shaft must run straight and cannot be more than
0.003"" (0.08 mm) out of round at the spider
attachment point.
Check to make sure that both fi ngers of the yoke
press evenly on the wear cap. Replace yoke as
necessary.
Check to ensure that each blade is adjusted to
have the same pitch as all other blades. Adjust
per maintenance section in manual.