Makita HM1810 Manual page 6

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[3] DISASSEMBLY/ASSEMBLY
[3] -2. Disassembling/Assembling Gear Section
DISASSEMBLING
1) After separating Gear housing from Crank housing, remove Ball bearing 6302LLB with Gear extractor, large
(No.1R045). At this time, be careful not to lose Pin 5. Then using Retaining ring S and R pliers (No.1R291)
remove Retaining ring S-20. (Fig. 10)
2) Put Gear housing on Pipe Ring (No.1R023), and press down Crank shaft using arbor press. (Fig. 11)
3) Now Crank shaft complete, Spur gear 47 and Sleeve 25 can be removed from Gear housing. (Fig. 12)
Note: Be careful not to lose two woodruff keys.
Fig. 10
Ball bearing
6302LLB
Retaining
ring S-20
Gear housing
4) Two 6202 Ball bearings can be removed from the assembly
of Helical gear 50 and Spur gear 22 using Bearing extractors
(No.1R263) as illustrated in Fig. 13.
5) As illustrated in Fig. 15, the assembly of Helical gear 50 and
Spur gear 22 can be disassembled using Pipe ring (No.1R023),
Round Bar for Arbor 14-100 (No.1R243), arbor press and
two appropriate steel plates.
Note: Be careful not to lose two Woodruff keys.
Fig. 14
Fig. 11
Arbor press
Round bar
for arbor 14-100
(No.1R243 )
Metal plates
for supporting Gear
Pipe Ring (No.1R023)
Fig. 12
Arbor press
Crank shaft
complete
Pipe Ring
(No.1R023)
Fig. 13
Ball bearing 6202
(on Helical gear 50 side)
Helical gear 50
Bearing Extractor
(No.1R263)
P 6 / 20
Spur gear 47
Sleeve 25
Woodruff key 4
Crank shaft complete
Ball bearing 6202
(on Spur gear 22 side)
Spur gear 22
Helical gear 50
Spur gear 22
Woodruff key 4