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P 2/ 8
Repair
CAUTION: Repair the machine in accordance with “Instruction manual” or “Safety instructions”.
[1] NECESSARY REPAIRING TOOLS
[2] LUBRICATIONS
Fig. 1
Code No. Description Use for
1R139 Drill chuck extractor Removing / Assembling Drill chuck
1R223 Torque wrench shaft 20-90 N.m Removing / Assembling Drill chuck
1R224 Ratchet head 12.7 Attaching to 1R223 Torque wrench shaft 20-90 N.m
1R269 Bearing extractor Removing Ball bearings
1R291 Retaining ring S and R pliers Removing / Assembling Retaining rings
1R298 Hex. bar 10 with square socket Removing / Assembling Drill chuck
1R340 Bearing retainer wrench Removing / Assembling Bearing retainer
781024-2 Wrench 43 Removing broken Drill chuck for DS4010 and DS4011
781007-2 Wrench 14 Removing broken Drill chuck for DS5000
Item No.
Apply the following lubricant to the portion to protect parts and product from unusual abrasion.
Description Lubricant
Amount
Portion to lubricate
Gear housing
complete
8
Makita
grease N No.2
Gear room where Spur gear 47 and Gear complete 7-41
engage with Armature’ gear (Refer to Fig. 8.)
(1) Remove Armature ass’y as illustrated in Fig. 2.
(2) Disassemble Armature ass’y as illustrated in Fig. 3.
Take the disassembling step in reverse.
Note: Be sure to firmly grasp
the jaws of 1R269 with
Water pump pliers because
the space between
Insulation washer and Ball
bearing 608LLB is very tight.
1. Remove Carbon brushes.
2. Remove four 5x40 Tapping screws and then
pull off Armature together with Gear housing
cover complete from Motor housing complete.
3. Remove Armature ass’y from Gear cover
housing complete.
10g
[3] DISASSEMBLY/ASSEMBLY
[3]-1. Armature
Armature ass’y
Motor housing
complete
Gear cover housing complete
5x40 Tapping
screw (4pcs.)
Fig. 2
DISASSEMBLING
ASSEMBLING
1. Remove Ball bearing 608LLB from
Armature drive end with 1R269.
Ball bearing 608LLB
1R269
Fig. 3
Ball bearing 608LLB
1R269
Water pump pliers
Insulation washer
2. Remove Ball bearing 608LLB from
the commutator end of Armature
with 1R269 and Water pump pliers.