Component Testing; Motor Testing - Maytag MAT12PDA Service Manual

Troubleshooting Procedures
To avoid risk of electrical shock, personal injury or death, disconnect power to unit before servicing, unless testing
requires power.

COMPONENT TESTING

Illustration
Pressure Switch
Water Valve
Motor
Pump
Transmission
Belts

MOTOR TESTING

A motor test cord may be used to electrically check operation of the various electrical components without removing
them from the unit. Testing in this manner merely determines whether or not part will function independently of other
electrical components. In order to make accurate test, proper connection of the motor test cord is important.
All four leads of the test cord are required to test the washer drive motor. The following drawing shows installation of
the test cord on washer drive motor. Reversing the motor from agitation to spin is accomplished by reversing the test
cord wires B and C.
14
!
WARNING
Component
Disconnect wire terminals from switch.
Measure resistance across the
following terminals:
Empty (Filling) 20 to 15--------------------
Full (Run) 20 to 15 -------------------------
Measure resistance across the
terminals of each coil on the valve.
Type of Motor:
Single speed (Split phase)
Verify drain pump is not clogged or
damaged
Type of transmission (orbital):
618 r.p.m. Spin
150 o.p.m. Agitate
Check wattage with full tub of water
only (Use Wattage Meter)
Check belt for excessive wear or being
burnt and cracking
16022842 Rev. 0
Test Procedure Results
Resistance above 2 indicates dirty
switch contacts.
Closed circuit
Open circuit
Approximately 850-950
See "Motor" Testing section for
correct wiring contact
1) Remove clog and verify proper
operation
2) Replace drain pump if damaged
See "Transmission" Disassembly
Procedures section.
380 to 420 watts
Replace if belt if damaged
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