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P 1
1
/ 2
2
[3] DISASSEMBLY/ASSEMBLY
[3]-3. Change lever section
R
epair
DISASSEMBLING
ASSEMBLING
Insert the tip of thin slot screwdriver into the notch of Gear housing
complete, then lever up one side of Change lever cover A. (
Fig. 26
)
Lever up the other side of Change lever cover A in the same way,
then remove Change lever cover A. Change lever A can be removed.
(1) Set Change lever A to hammer mode as drawn in
Fig. 27
.
(2) While checking the V-edge of Push corn fits into V-groove of Catch cam A, insert Change lever A into Gear housing.
Note
: The V-groove of Change lever A has to come on the center of Leaf spring. (
Fig. 28
)
(4) Be sure to check Change lever A works properly after assembling.
Fig. 27
Fig. 26
notch of Gear housing
complete
Change lever A
Change lever cover A
Change lever A
Fig. 28
center of Leaf spring
V-groove of
Clutch cam A
V-groove of
Change lever A
[3]-4. Armature
REPLACING
(1) Remove three 4x18 Tapping screws and Handle cover.
(2) Slide Brush holder unit to the best position to repair, and move the arms of Spiral springs aside, then separate Carbon
brushes from Commutator. (
Fig. 29
)
(3) Remove four 4x30 Tapping screws, then separate Motor housing complete from Gear housing complete. Armature is
left on Gear housing complete at that time. (
Fig. 30
)
Note
: Do not lose Wave washer 15 on the bottom of Motor housing. Do not fail to set it in place when assembling.
(4) Remove Armature ass’y from Gear housing complete by pulling by hand.
Note
: Ball bearing 6000LLB of Armature ass’y is held in Inner housing complete with O ring 26. Therefore, it is not
necessary to tap Gear housing with Plastic hammer to remove Armature ass’y.
(5) Remove Ball bearings 6000LLB with 1R269.
Remove 627DDW and Insulation washer together at one time with 1R269.
(6) Assemble the components in the reverse order of disassembly after replacing the damaged parts.
Fig. 29
Fig. 30
Insulation washer
spiral spring of
Brush holder unit
Gear housing
complete
Motor housing
complete
4x30 Tapping screw
(4 pcs.)
Ball bearing 627DDW
Wave washer 15
Ball bearing 6000LLB held with O ring 26 in Inner housing complete