Makita GA5010 Technical Information page 3

R
epair
[3] -1. Armature, Small spiral bevel gear, Ball bearing 6000DDW (cont.)
DISASSEMBLING
3) Attach one set of 1R039 to vise, then fix Armature in 1R039.
Remove Hex nut M7 from the drive-end of Armature shaft by turning it counterclockwise with Wrench 11. (Fig. 3)
4) Hold Small spiral bevel gear by hand, then pull off Armature from Gear housing. (Fig. 4)
Note: If it is difficult to pull off Armature by hand, do the following steps.
1. Lubricate the gear and Armature shaft with spray lubricant.
2. Wrap the gear with cloth to protect the gear teeth.
3. Using water pump pliers or the like, firmly grip the gear wrapped with cloth, then turn the gear.
Fig. 3
Gear housing
Hex nut M7
Wrench 11
1R039
5) In order to remove Ball bearing 6000DDW from Gear housing,
first remove Retaining ring R-30 using 1R005, then remove
Flat washer 20 from Gear housing. (Fig. 5)
6) Reassemble Armature to Gear housing, then the spiral bevel gear
to Armature shaft. Tighten Hex nut M7 provisionally by turning
clockwise. (Refer to Figs. 4, 3)
7) By tapping the end surface of Gear housing with plastic hammer,
Ball bearing 6000DDW can be removed together with Armature.
(Fig. 6)
8) Remove Ball bearing 608DDW from Armature using 1R269. (Fig. 7)
Fig. 6
Small spiral bevel gear
Hex nut M7
ASSEMBLING
1) Mount Ball bearing 6000DDW on Armature by hand, then insert
into the bearing installation hole of Gear housing, (Fig. 8)
Then pull off Armature.
2) Put Flat washer 22 on Ball bearing 6000DDW, and fasten them
with Retaining ring R-30 using 1R005.
3) Then do the reverse of the disassembling steps.
Ball bearing 600DDW
Fig. 4
Fig. 5
Fig. 7
Small spiral bevel gear
Hex nut M7
Ball bearing 6000DDW
Fig. 8
Small spiral bevel gear
Flat washer 22
Retaining rig R-30
Ball bearing 6000DDW
1R269
Ball bearing 608DDW
Ball bearing 6000DDW
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