88
PROBLEM
CAUSE
SOLUTION
Motor is not
working.
1) Wires in the main plug or in the
socket are loose.
2) The switch is faulty.
1) Have the socket and plug checked by an autho-
rized technician.
2) Have the switch replaced by an authorized tech-
nician.
Unusual noises
occur during
operation. Mo-
tor is not work-
ing properly.
1) Switch contact has failed.
2) Components have jammed.
3) Too high of load has been applied.
1) Have the switch replaced by an authorized tech-
nician.
2) Have the tool checked and repaired.
3) Use less pressure during sanding operations.
Motor gets hot. 1) Foreign substances have gotten inside
the motor.
2) Too high of load has been applied.
1) Have the foreign substances removed.
2) Use less pressure during sanding operations.
Frequent sparks
occur on the
commutator.
1) There is a short circuit in the motor
(armature).
2) Carbon brushes are worn out or
jammed.
1) Have the armature replaced.
2) Have the carbon brushes checked.
TROUBLESHOOTING
REPLACING THE SHAFT CAP
The plastic shaft cap on the back of the triangular base pad (Fig. G
- 1) and the round base pad is a consumable item that needs to be
routinely replaced. Spare caps are included on the back of the trian-
gular pad (Fig. G - 2). Use the spanner to remove the worn shaft cap
and replace with a new cap.
Adjust the angle of the shaft cap with a spanner to match the hole
alignment (Fig. B) before attaching it back onto the drywall sander.
REPLACING THE SANDING PAD
First, detach the sanding disc from the sanding pad.
FOR TRIANGULAR SANDING PAD:
Unscrew the three screws (Fig. H - 1) located on the outer corners
of the sanding pad and the three screws (Fig. H - 2) on the flange.
Replace the pad with an identical part suited for this particular model
of drywall sander. Attach firmly in place with the screws.
FOR ROUND SANDING PAD:
Insert the hex wrench into the hexagonal screw (Fig. I - 1) located in
the center of the hook and loop sanding pad. Hold the pad firmly
while turning the wrench to unscrew the center hex screw. Replace
the pad with an identical part suited for this particular model of dry-
wall sander. Attach firmly in place using the hexagonal screw.
MAINTENANCE
1
1
2
2
1
Fig. G
Fig. I
Fig. H
Summary of Contents for 6377
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