16 American Dryer Corporation 450412-4
Check the basket drive belt for proper tension. Adjust if
necessary.
Replace the wrapper panels.
Replace the perforated tumbler panel.
1-15/16 (5 cm) Flange BearingReplacement
Disconnect electrical power to the dryer.
Remove the 4 bolts securing the bearing cap located in the
rear of the dryer. And remove.
Depress the tabs on the rotational sensor harness plug
and pull apart.
Remove the retaining ring from the tumbler shaft.
Remove the 4 bolts, lock washers and flat washers
securing the flange bearing to the dryer cabinet.
Loosen the setscrews from the flange bearing.
Remove the flange bearing from the tumbler shaft. (A
bearing puller may be necessary.)
To replace new flange bearing reverse steps.
Reestablish electrical power to the dryer.
4-inch Support Wheel Replacement
Disconnect electrical power to the dryer
Remove the four nuts securing the rear support box to the
dryer.
Remove the center allen head bolt and teflon washer.
Loosen the individual wheel bolts so the rear of the box
can be removed.
Remove the damaged wheel.
Replace with new wheel.
Reverse steps to replace support box.
NOTE: make sure inner teflon disc does not fall off of
center allen head bolt.
Rotational Sensor Assembly
The rotational sensor assembly is located in the rear of
the dryer. It consists of a magnet. Rotational sensor switch,
which is mounted to the bearing cap. The magnet is
screwed into the 1-15/16” (5 cm) flange bearing on
machines made with a bearing or directly attached to the
shaft on machines made with 4-inch (10.16 cm) shaft
support rollers.
The magnetic rotational sensor switch senses the rotation
of the tumbler. If the gap between the sensor switch and
the magnet is greater than a preset amount or if the tumbler
stops turning, then the dryer will shut down on “SEFL”
(“rotational sensor failure”).
Rotational Sensor Switch Replacement
Discontinue electrical power to the dryer.
Remove the bearing cap from the dryer.
Remove the adjustment nut from the bearing cap.
Remove the magnetic rotational sensor switch from the
bearing cap.
Depress the tabs on the rotational sensor harness plug
and pull apart, then remove the sensor switch.
To install a new sensor switch, connect the plug of the new
sensor switch to the sensor harness.
Place one adjustment nut onto the sensor switch and insert
into the bearing cap.
Place the second adjustment nut on but do not tighten.
The magnet on the flange bearing and the sensor switch
must be in a horizontal line to one another.
The gap between the magnet and the sensor switch must
be 1/8-inch.
Tighten the adjustment nuts installed.
Reestablish electrical power to the dryer.
Idler Shaft Pillow BlockBearing Replacement
Refer to tumbler wheel replacement on idler assembly
page 15.
Complete all the steps.
Remove both setscrews from each pillow block bearing.
Remove pillow block bearing from shaft.
Reverse this procedure for replacement.
NOTE: Once the shaft assembly has been installed into
dryer, return pillow block bearings to the marked position
and tighten setscrews.
Refer to basket assembly section page 15 for shaft and
basket alignment.
Drive Assembly Pillow BlockBearing Replacement
Refer to tumbler wheel replacement on drive assembly
page 15.
Complete all the steps.
Remove both setscrews from each pillow block bearing.
Remove pillow block bearings from shaft.
Reverse this procedure for replacement.
NOTE: Once the shaft assembly has been installed into
dryer, return pillow block bearing to the marked position
and tighten setscrews.