Makita HK1820 Technical Information page 9

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[3] DISASSEMBLY/ASSEMBLY
[3] -5. Gear (Crank) Section
DISASSEMBLY
1) Disassemble Gear (Crank) section from Crank housing complete as described in Figs. 11 - 14.
2) Gear (Crank) section can now be disassembled as described in Fig. 16.
Fig. 16
1. Stabilizing Bearing box
of Gear section on 1R258,
remove Crank shaft using
arbor press.
Bearing box
1R258
Crank shaft
ASSEMBLY
Do the reverse of the disassembling steps.
Note: Make sure that O Ring 39 is mounted to Bearing box of Crank section before assembling Crank section
to Crank housing complete. (Fig. 14)
2. Remove Helical gear 36
and Flat washer 22 (2 pcs)
from Bearing box.
Helical gear 36
Flat washer 22
(2 pcs)
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3. Put 1R022 under Bearing box to make
Bearing box parallel to arbor press,
then apply 1R029 to Oil seal 15.
By pressing down 1R029 with arbor press,
Oil seal 15 and Ball bearing 6002LLB
can be removed from Bearing box.
1R029
Oil seal 15
Ball bearing 6002LLU
P 9/17
1R022