Makita HM1810 Manual page 7

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[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)
Fig. 15
Apply Makita grease N No.1 to the gear portion
of Armature before press-fitting Armature onto
Gear housing.
O ring 40
Pin 5
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)
Fig. 17
Assembly of Helical gear 50
and Spur gear 22
Clean this bearing chamber
of Gear housing complete
before mounting O ring 40
and Armature to protect
O ring 40.
Crank shaft complete
O ring 90
Fit Pin 4 on Gear housing
complete in the hole of
Crank housing complete.
Crank housing comp.
Fig. 16
Ball bearing 6302LLB
Retaining ring S-20
Spur gear 47
Woodruff key 4
(2 pcs)
Crank shaft complete
Gear housing complete
Fig. 18
Sleeve 25
Pin 4
Hex socket head bolt M8x75
Gear housing cover
Before putting Gear housing
cover, apply ThreeBond 1215
to the figure 8 inlaid portion
designated with white arrow.
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