Makita HR2021 Technical Information page 8

R
epair
< 11 > Disassembling swash bearing
1. Referring to Fig. 3, 3A, 3B at page 4, disassemble the product.
And separate inner housing together with tool holder section and swash bearing section from gear housing as
illustrated in Fig. 8 and Fig. 8A. Ball baring 606ZZ can remain in gear housing in this stage. If so, refer to Fig. 8D.
2. Separate tool holder section from inner housing as illustrated in Fig. 8A.
Plastic hammer
Swash bearing
section
3. Swash bearing section is held in inner housing with bearing retainer which is fastened with 2 pcs. of hex socket
head bolts M4x12. Take off these hex socket head bolts M4x12 for disassembling swash bearing section. See Fig. 8B.
Hex socket head bolts M4x12
4. Bring piston cylinder to the dead point. And , twist the the swash bearing section, with pulling off them
from inner housing. Then swash bearing section and change plate can be disassembled from piston cylinder.
See Fig. 8C.
5 If ball bearing 606ZZ remains in gear housing in the step of Fig. 8, reassemble swash bearing section temporarily
to gear housing, and hold gear housing as illustrated in Fig. 8D. So, swash bearing section tilts in the direction of arrow.
Keeping the illustrated position, disassemble swash bearing section by striking the edge of gear housing
with plastic hammer. So, ball bearing 606ZZ can be removed together with swash bearing section.
Ball bearing 606ZZ
Washer 30
Tool holder
section
Fig. 8
Piston cylinder
Fig. 8C
Tool holder
section
Flat washer 28
Swash bearing
section
Fig. 8A
Fig. 8B
Fig. 8D
P 8 / 18
Piston cylinder
Inner housing