Makita HR2021 Technical Information page 5

R
epair
< 7> Disassembling tool holder section
1. Disassemble change lever from gear housing as mentioned in < 4 > Disassembling change lever at page 4.
2. Separate gear housing from motor housing as illustrated in Fig. 3 and Fig. 3A. And disassemble armature
as illustrated in Fig. 3B at page 4.
3. Disassemble inner housing from gear housing as illustrated in Fig. 4.
4. Separate tool holder section from inner housing as illustrated in Fig. 4A. Pay attention, not to lose flat washer 28,
when separating tool holder section.
Plastic hammer
Swash bearing
section
5. Ring spring 28 can not be removed without pressing washer 30 down to the spur gear 51 side, because it is
almost covered by washer 30. See Fig. 4B.
6. Disassemble ring spring 28 with retaining ring plier, pressing washer 30 down to the spur gear 51 side as
illustrated in Fig. 4C and Fig. 4D.
7. Disassemble washer 30, compression spring 31 and spur gear 51 from tool holder as illustrated in Fig. 5E.
No. 1R306 Ring spring
Fig. 4B
Washer 30
< 8 > Assembling tool holder section
1. Apply grease to spur gear 51 and tool holder referring to < 1 > Lubrication at page 2.
2. Assemble spur gear 5, compression spring 31 and washer 30 to tool holder as illustrated in Fig. 4E.
3. Pressing the washer 30 down to the spur gear 51 side, with arbor press, assemble ring spring 28 as illustrated
in Fig. 4D and Fig.4C.
4. Assemble flat washer 28 to the position illustrated in Fig. 4A at page 5.
5. Insert piston cylinder of swash bearing section into tool holder. And assemble tool holder section by pressing
into inner housing as illustrated in fig. 4A.
Washer 30
Tool holder
section
Fig. 4
extractor
Round bars
for arbor
Retaining ring
plier
Fig. 4C
Compression
spring 31
Spur gear 51
Tool holder
section
Flat washer 28
Swash bearing
section
Fig. 4A
Ring spring 28
Washer 30
Retaining ring
plier
Fig. 4E
Piston cylinder
Inner housing
Fig. 4D
P 5 / 18