Service Manual

4-14
n
Whirlpool & Maytag Front-Load Dryers
COMPONENT ACCESS
Removing the Belt, Drum, and Rollers (continued)
7. Remove the four (4) 1/4” hex-head screws securing the
front bulkhead to the side panels as illustrated in Figure 4.
Li the bulkhead up o the side-panel tabs and remove.
Remove 4 screws
Side Panel Tabs
Figure 4 - Remove front bulkhead screws.
8. Reach under the drum, (raise it as far as it will go), and
push the idler pulley arm, on the back of the drive motor,
to the le to relieve the tension on the belt, then remove
the belt from the pulley.
9. Slide the belt o the front of the drum and remove belt.
Remove Belt
Figure 5 - Remove drum belt.
10. Li the drum and remove it from the dryer cabinet.
Reassembly Note - Belt Orientation on Pulley
3$*(
FOR SERVICE TECHNICIAN’S USE ONLY
DO NOT REMOVE OR DESTROY
9. Reassemble all parts and panels.
10. Plug in dryer or reconnect power.
11. Perform steps under “Service Test Mode”,
page 3, to verify repair.
TEST #3: Motor Circuit
This test will check the wiring to the motor
and the motor itself. The following items are
part of this motor system:
NOTE: Refer to strip circuit on page 25
to diagnose drive motor.
1. Unplug dryer or disconnect power.
2. Remove console to access the machine
electronics.
3. Check for loose, worn, or damaged drum
belt—repair as necessary.
4. Door Switch problems can be uncovered
by following procedure under TEST #7:
Door Switch, page 22; however, if this was
not done, the following can be performed
without applying power to the dryer. Connect
an ohmmeter across ACU J8-3 (neutral, white
wire) and J8-4 (door, tan wire).
¾With the door properly closed, the ohmmeter
should indicate a closed circuit (0–2 1).
¾If not, check harnesses and connections
between ACU and door switch. If good,
replace the door switch assembly.
5. Motor Circuit Check - Access the ACU and
measure the resistance across J8-4 and J9-1.
¾If resistance across J8-4 and J9-1 is in
the range of 1 to 6 1, the motor circuit is
acceptable. Replace the ACU.
¾Otherwise, continue to step 6.
6. Check the wiring and components in the path
between these measurement points by referring
to the appropriate wiring diagram (gas or electric)
on pages 26 or 27. NOTE: To access motor
system components, slide the top back and
remove the front panel.
ALL DRYERS: Check the thermal fuse. See TEST
#4b: Thermal Fuse, page 20.
Continue with step 7 below to test the remaining
components in the motor circuit.
7. Check the drive motor. Slowly remove the
drum belt from the spring-loaded pulley, gently
letting the pulley down. See figure 7.
8. Remove the white connector from the drive
motor switch. See figure 8.
Part of Motor System
Electric
Dryer
Gas
Dryer
Drum belt
üü
Door switch
üü
Harness/connection
üü
Thermal fuse
ü
Drive motor
üü
Centrifugal switch
üü
Machine control electronics
üü
ü
Figure 7 - Slowly remove drum belt.
Drum
Belt
Pulley
1
5
3
4
6
2
Figure 8 - Remove white connector.
White
Connector
Drive Motor Switch
Figure 6 - Viewed from rear of dryer.
To Remove a Roller
1. Pry the sides of the triangular ring out of the groove in the
roller sha with a small screwdriver (see Figure 7).
Triangular Ring
Figure 7 - Triangular Ring
2. Slide the roller o the roller sha (see Figure 8).
Roller Sha
Figure 8 - Remove roller from shaft.
3. To remove the roller sha, remove the 9/16” nut and
washer from the roller support, and remove the support
and remaining triangular ring. See Figure 9.
Nut & Washer
Roller Sha & Ring
Figure 9 - Roller Hardware