Makita BHR242 Technical Information page 19

R
epair
[3] DISASSEMBLY/ASSEMBLY
[3]-8. Oil seal 25, Cup sleeve, Ball bearing 6806LLU
DISASSEMBLING
(1) Assemble Inner housing complete to Gear housing complete.
(2) Put Inner housing complete on U-groove table portion of arbor press, then press Oil seal 25, Cup sleeve and Ball
bearing 6806LLU out of Gear housing complete using 1R252.
ASSEMBLING
(1) Press-fit Ball bearing 6806LLU into Cup sleeve. (Fig. 60)
(2) While receiving the stepped collar of Gear housing complete on 1R258 as drawn in Fig. 61,
press-fit Oil seal 25 with 1R232 until it stops. (Fig. 62)
Oil seal 25 is not yet inserted completely because the outer diameter of 1R232 is larger than
that of Oil seal setting hole.
(3) Press-fit Oil seal 25 to the original position with 1R164 until it stops. (Fig. 63)
(4) Press-fit Cup sleeve with Ball bearing 6806LLU into the place using 1R273. (Fig. 64)
Note: Too much pressure will deform Oil seal 25 and Cup sleeve. Press-fit them with gentle
pressure.
Fig. 61
Gear housing
complete
1R258
Fig. 63
Oil seal 25
the stepped collar
(gray color portion)
to be put on 1R258
30mm
1R164
34mm
Fig. 62
Oil seal 25
Fig. 64
1R273
100mm
37mm
Cup sleeve with Ball bearing 6806LLU
37mm
at the bottom
Note: Be careful to the direction.
1R258
P 19/ 25
Fig. 60
Ball bearing
6806LLU
Cup sleeve
1R232
36mm