P 15/ 23
[3] DISASSEMBLY/ASSEMBLY
[3]-4. Armature
R
epair
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. 31
)
(3) Remove four 4x30 Tapping screws, then separate Motor housing from Gear housing complete. Armature is left on
Gear housing at that time. (
Fig. 32
)
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 complete 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.
(1) Remove Bit holder section (HR2300) / Holder section (HR2310T).
(2) Remove Change lever section.
(3) Separate Gear housing from Motor housing.
(4) Remove Tool holder complete (HR2300) / Tool holder guide complete (HR2310T)
by tapping the top as drawn in
Fig. 33
.
Note
: Flat washer 30 is located between Tool holder (guide) complete and
Inner housing complete. Be careful.
(5) Set 1R045 and 1R369 to Tool holder (guide) complete. (
Fig. 34
)
(6) Compress Compression spring 32 (
Fig. 35
), then separate Spiro lock washer 30 from
Tool holder (guide) complete by sliding a thin slotted screwdriver from the upper end
as drawn in
Fig. 36
. The components are disassembled. (
Fig. 37
)
Fig. 31
Fig. 35
Fig. 34
Fig. 36
Fig. 37
Fig. 32
Fig. 33
Insulation washer
spiral spring of
Brush holder unit
Gear housing
Motor housing
4x30 Tapping screw
(4 pcs.)
Ball bearing 627DDW
Wave washer 15
Gear housing
complete
Ball bearing 6000LLB held with O ring 26 in Inner housing
Spiro lock washer 30
Tool holder
(guide)
complete
Steel ball 4
(4 pcs.)
Pin 6
(6 pcs.)
Driving flange
Compression spring 31
Tool holder
(guide) complete
[3]-5. Torque limiter section
Spur gear 51
1R045
Compression spring 31
1R369
Tool holder (guide) complete
1R369
1R369
Upper end of
Spiro lock
washer 30
Flat washer 30 (thicker than the others) Flat washer 30 (thin)
thin
slotted
screwdriver
