Makita HR262D Technical Information page 14

R
epair
[3] DISASSEMBLY/ASSEMBLY
[3]-6. Needle bearing complete and Oil seal 25
DISASSEMBLING
Fig. 34
Put Gear housing complete on arbor press table, and keep it upright.
Then, by pressing down Oil seal 25 using 1R252, Oil seal 25 and
Needle bearing complete can be removed from Gear housing complete
with gentle pressure.
Note:
On arbor press table, Gear housing complete can stand almost upright
on its end edges. Although the end edges are rather thin, you need not
worry about breakage because Oil seal 25 and Needle bearing complete
are fitted to Gear housing complete with low press fit force.
ASSEMBLING
1) Assemble Oil seal 25 to Gear housing complete. (Figs. 35, 36)
2) Assemble Needle bearing complete. (Fig. 37)
Fig. 35
With 1R232 and arbor press, insert Oil seal 25 until it stops.
In this step, Oil seal 25 is not yet inserted completely
because the outer diameter of 1R232 is larger than that of
Oil seal setting hole.
Oil seal 25
Fig. 37
With 1R165 and arbor press, press down
Needle bearing complete until it stops.
1R165
Outer diameter: 30mm
Cup washer portion of
Needle bearing complete
Needle bearing portion of
Needle bearing complete
1R232
Outer diameter: 36mm
The diameter of
Oil seal 25 setting hole
is smaller than 36mm.
Fig. 36
Using arbor press and the 34mm outer diameter end
of 1R164, press down Oil seal 25 until it stops at its
original position.
original position of Oil seal 25
Note:
1) Do not use 1R164 in this step.
2) Do not press Needle bearing
3) Too much pressure will deform
bottom side of
4) Be sure to press Cup washer
Gear housing
complete
Face the flat portion of Needle bearing complete
towards the bottom side of Gear housing complete.
1R252
Gear housing
complete
Oil seal 25
Needle bearing
complete
Outer diameter: 30mm
1R164
Outer Diameter: 34mm
portion directly.
Needle bearing complete.
Do not press hard.
portion with gentle pressure.
Needle bearing complete,
viewed from rear side
P 14/22