Makita HR2021 Technical Information page 11

R
epair
<13> Assembling swash bearing section to piston cylinder
1. Apply MAKITA grease to piston cylinder and swash bearing 10 referring to <1> Lubrication at page 2.
2. Assemble 2 pcs. of flat washers 12 and piston joint to piston cylinder as illustrated in Fig. 11.
3. Insert the above piston cylinder into inner housing as illustrated in Fig. 11A.
4. Moving piston cylinder to the dead point for swash bearing 10, assemble swash bearing 10 to piston cylinder by
inserting its pole into the hole of piston joint as illustrated in Fig. 11B.
5. Fasten bearing retainer which has been assembled to swash bearing section in the step of Fig. 10C, with adhesive
hex socket head bolt M4 x 12, onto inner housing as illustrated in Fig. 11C. Fig. 11
< Note >
Do not fasten with the used hex socket head bolt M4 x 12. Always use the fresh adhesive
hex socket head bolt M4 x 12.
Flat washer 12
Fig. 11
<14> Disassembling needle bearing complete
Strike the work table with gear housing. Then, needle baring complete can be disassembled from gear housing
as illustrated in fig. 12.
< Note >
Cover the work table with something soft to avoid the damage on gear housing. before disassembling.
Flat washer 12
Piston cylinder
Piston joint
Piston cylinder
Fig. 11B
Piston cylinder
2 pcs. of hex socket
head bolts M4 x 12
for tightening bearing
retainer
Needle bearing
complete
Fig. 12
Inner housing
Fig. 11A
Fig. 11C
P 11 / 18