Motor Section - Makita MAKSTAR BJR141 Series Technical Information

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epair
[3] -3. Spiral Bevel Gear Section (cont.)
DISASSEMBLING
2) Fix Spiral bevel gear section in vise by clamping the flats of Gear shaft, then remove Torx socket head bolt M6x15
using Torx screwdriver applicable to T20 Torx socket. (Fig. 23)
Note: Securely fit Torx driver in the socket of Torx socket head bolt M6x15 because Threadlocker is applied to the bolt.
Spiral bevel gear section can now be disassembled as illustrated in Fig. 24.
Fig. 23
Vise
ASSEMBLING
Do the reverse of the disassembling steps.
Note: When tightening Torx socket head bolt M6x15, be sure to apply Threebond 1342 or Loctite 242 to the threaded
portion of the bolt.

[3] -4. Motor Section

DISASSEMBLING
1) Remove Carbon brushes. Turn Insulation cover inside out as illustrated in Fig. 25.
2) Remove Motor housing and Baffle plate by unscrewing four 5x35 Tapping screws. (Fig. 26)
3) Separate Armature from Gear housing by unscrewing two M4x12 Pan head screws. (Fig. 27)
4) Remove two E-10 Stop rings. Remove Ball bearing 6001DDW from Armature shaft using 1R269.
Bearing retainer B and Fan guide can now be removed. (Fig. 28)
Fig. 25
Insulation cover
Fig. 27
Pan head screw M4x12
Gear housing
Torx socket head bolt M6x15
(with T20 Torx socket)
Gear shaft
Fig. 26
Tapping screw
5x35 (4pcs)
Fig. 28
Ball bearing 6001DDW
Fig. 24
Baffle plate
Stop ring E-10
P 8/10
Torx socket head bolt M6x15
Spiral bevel gear 48
Bearing retainer A
Ball bearing 6000LLB
Ring 10
Ball bearing 6900LLB
Gear shaft
Armature
Motor housing
Bearing retainer B
Fan guide