Makita HR2230 Technical Information page 8

R
epair for 2 mode Rotary hammers HR2230, HR2460 and HR2460F
[3] DISASSEMBLY/ASSEMBLY
[3] -5. Needle Bearing Complete and Oil Seal 25
DISASSEMBLING
(1) Disassemble Tool holder section and Inner housing complete from Gear housing complete. See [3] -4. Tool Holder Section.
(2) Insert Inner housing complete into Gear housing complete. (Fig. 24)
(3) Remoe Needle bearing complete and Oil seal 25 from Gear housing complete. (Fig. 25)
Fig. 24
Gear housing complete
Inner housing complete
ASSEMBLING
(1) Assemble Oil seal 25 to Gear housing complete in the order from Figs. 26 to 27.
(2) Assemble Needle bearing complete as illustrated in Figs. 28 and 29.
Fig. 26
Press Oil seal 25 with arbor press and 1R232.
Oil seal 25 can be set halfway.
Oil seal 25
Fig. 28
Face the flat portion of Needle bearing complete to
the bottom side of Gear housing complete.
Needle bearing complete
Top side
Gear housing complete
Note: The other way is available for removing/ assembling Needle bearing complete.
See Figs. 30 and 31 of next page.
Fig. 25
1R252
1R232
Outer diameter: 36mm
(The initial position of Oil
seal 25)
Flat portion
Bottom side
Press Oil seal 25 with arbor press and 1R252.
Needle bearing complete is removed together
with Oil seal 25 from Gear housing complete.
Fig. 27
Press Oil seal 25 to the initial position with arbor press
and the outer diameter 34mm end surface of 1R164.
1R164
The initial position of Oil seal 25
Fig. 29
Press Needle bearing with arbor press and
the outer diameter 34mm end surface of
1R164 until Needle bearing complete stops.
1R164
Needle bearing (the component of Needle
bearing complete)
Oil seal 25
P 8/ 15
Oil seal 25
Needle bearing
complete
Outer diameter: 30mm
Outer diameter: 34mm