P 7 / 20
R
epair
[3] DISASSEMBLY/ASSEMBLY
[3] -2. Disassembling/Assembling Gear Section (cont.)
ASSEMBLING
1) After setting O ring 40, O ring 90 and Pin 4 in place on Gear housing complete, press-fit Crank shaft complete and
Armature onto Gear housing using arbor press as illustrated in Fig. 15.
2) Put Sleeve 25 through Crank shaft complete. Set woodruff keys onto the concaves of Crank shaft complete.
Mount Spur gear 47 to Crank shaft complete. After fixing Spur gear 47 with Retaining ring S-20, assemble Ball
bearing 6302LLB to Crank shaft complete. (Fig. 16)
3) Assemble Helical gear 50 to Spur gear 22. Mount the assembly to Gear housing complete.
4) Put Gear housing complete onto Crank housing complete as illustrated in Fig. 18.
5) Apply an appropriate amount of ThreeBond 1215 to the figure 8 inlaid portion that contacts Gear housing cover.
Then secure Gear housing cover to Gear housing complete with four M8x75 Hex socket head bolts. (Fig. 19)
Hex socket head bolt M8x75
Gear housing cover
Fig. 18
Fig. 17
Assembly of Helical gear 50
and Spur gear 22
Crank housing comp.
O ring 40
Clean this bearing chamber
of Gear housing complete
before mounting O ring 40
and Armature to protect
O ring 40.
Apply Makita grease N No.1 to the gear portion
of Armature before press-fitting Armature onto
Gear housing.
Fig. 15
O ring 90
Crank shaft complete
Fig. 16
Crank shaft complete
Spur gear 47
Sleeve 25
Gear housing complete
Woodruff key 4
(2 pcs)
Ball bearing 6302LLB
Retaining ring S-20
Pin 5
Pin 4
Fit Pin 4 on Gear housing
complete in the hole of
Crank housing complete.
Before putting Gear housing
cover, apply ThreeBond 1215
to the figure 8 inlaid portion
designated with white arrow.
