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Caution:
Please read our safety
information before attempting any testing, maintenance
or repairs.
 Before inspecting the idler pulley, unplug the clothes dryer or shut off
the power at the fuse box or breaker panel to avoid an electrical
shock hazard.
A belt loops around the drum, under
the idler pulley and over the drive pulley on the motor. The idler
pulley (also called a tensioner) consists of a wheel on a movable
bracket attached to a spring or tension bracket. If the idler
pulley does not function properly, it can result in a loose belt
that slips or fails to turn the drum at all. Also, the pulley
wheel itself can make a squealing noise as result of a failed
bearing. If the wheel does not turn at all, it can result in friction
with the belt resulting in a burning odor and damage to the belt.
Access to the idler pulley varies
by model, if your dryer has a lower front panel (kick plate) start
there. It should lift up and off or it may be held in place with
a few screws or snaps; it may also have a catch at the edges or
center gap between the kick panel and main panel. To release the
catch, push a putty knife, wrapped with masking tape, into the
gap and push back the catch. The next easiest access point is
the rear panel. The rear access panel is held in place with several
screws along the outer edges. The last resort method of access
is the removal of the entire front panel. The front panel supports
the front of the drum and so removal is more difficult. Front
panel removal varies. In general, access is gained by lifting
the top (remove the lint trap screws first), removing the screws
that secure the front panel, and detaching the panel from the
drum.
When reaching
into the dryer be careful of sharp edges on the cabinet and interior
supports. Reach in to the belt and give it tug. It should be taught
and have only a little give. The belt should go under the idler
pulley and over the motor pulley. Lift the idler pulley toward
the motor to relieve tension on the belt and remove it from the
motor pulley.
Turn the idler pulley wheel, it
should turn smoothly, quietly and without any wobble. Inspect
it for cracks or uneven wear. If the idler pulley does not maintain
proper tension or is damaged it should be replaced. Depending
upon your model, the entire assembly or just the wheel or bearing
may be replaced.
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