WF-5745SPM - LG Washing Machine Service Manual (repair manual). Page 41

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40
6) Pulsator doesn’ t rotate normally .
Where, what & how to check?
Result of Check Possible Cause How to repair & settle
Pulsator rotates at one 
direction.
1. The Pulsator rotates normally at the 
beginning of wash cycle, but is it not
rotate at clockwise direction (locked) 
after some wash cycles though there
is motor-working sound?
2. In the case the pulsator doesn’t 
rotates either clockwise or 
counterclockwise from the beginning
of wash cycle:
1) Check resistance of the wash 
motor if there is no motor-working
sound.
2) Check belt tension & whether the 
clutch rotates normally if there is 
motor-working sound.
3. The pulsator doesn’t rotate at both 
directions.
1) Check whether motor rotates at 
both directions if there is motor-
working sound when it’s 
energized.
2) Check resistance of the motor if 
there is no motor-working sound.
Clockwise
rotation locked.
Resistance 
is normal.
V-belt is loose.
Clutch locked.
Motor rotates 
at both
directions.
Motor doesn’t 
rotates  at  both
directions.
Normal 
resistance.
Unusual operation.
Defect of 
controller or poor 
contact of 
connectors of 
motor leads.
Loose the belt.
Defect of the
clutch.
Loose the belt.
The plusator 
locked.
Defect of the 
clutch.
Defect of the 
capacitor.(check
the capacitor’s 
capacitance)
Defect of the
motor. 
Motor coil is open.
Contact defect of
the leads.
Turn the power off 
and on again then that 
symptom disappears.
Explain “Don’t run wash 
only continuously”.
Change the controller if 
there are no contact 
defects in the leads of
the motor.
Adjust belt tension by 
changing motor fixing 
location and change the 
belt if it is impossible to 
adjust belt tension. 
Change the clutch if the 
clutch pulley is locked 
when making it rotated 
clockwise and 
counterclockwise by 
hand.
Adjust belt tension or 
change the belt if it is 
impossible to adjust.
Remove cause 
locking the pulsator
Change the clutch.
Change the motor if the 
motor is locked when 
having its shaft rotated 
by hand.
Change the capacitor if 
there is no contact defect 
in capacitor’s lead
Change the motor.
Remove the causes.
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