Makita BHR241 Informations techniques - Page 6
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[3] DISASSEMBLY/
[3] -5. Torque Limiter Section
ASSEMBLING
Do the reverse of disassembling steps.
Note: Do not forget to assemble Flat washer 28 between Torque limiter section and Inner housing complete. Refer to Fig. 12.
[3] DISASSEMBLY/ASSEMBLY
[3] -6. Needle Bearing Complete and Oil Seal 25
DISASSEMBLING
1) Disassemble Torque limiter section and Inner housing complete from Gear housing complete.
See Disassembly of [3] -5. Torque Limiter Section.
2) Insert Inner housing complete into Gear housing complete. (Fig. 15)
3) Remove Needle bearing complete and Oil seal 25. (Fig. 16)
Fig. 15
As the side for joining to Motor
1R252
housing is not flat, Gear housing
complete can not stand vertically
without support.
Therefore, insert Inner housing
complete into Gear housing
complete as a support.
Gear housing complete
ASSEMBLING
1) Assemble Oil seal 25 to Gear housing complete in the order of Figs. 17 and 18.
2) Assemble Needle bearing complete as illustrated in Figs. 19 and 20.
Fig. 17
With 1R232 and arbor press, insert Oil seal 25 until it stops.
Oil seal 25 is not yet inserted completely in this step,
because the outer diameter of 1R232 is bigger than that of
Oil seal setting hole.
Oil seal 25
Fig. 19
Face the flat portion of Needle bearing complete to
the belly side of Gear housing complete.
Needle bearing complete
back side
Gear housing complete
ASSEMBLY
(cont.)
Inner housing complete
1R232
outer diameter: 36mm
The diameter of Oil seal 25 setting
hole is less than 36mm.
flat portion
belly side
Fig. 16
1R252
Applying 1R252, press it with Arbor press.
Needle bearing complete is removed
together with Oil seal 25 from Gear
housing complete.
Fig. 18
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. 20
1R164
Needle bearing complete
Oil seal 25
P 6/ 14
Oil seal 25
Needle bearing
complete
outer diameter: 30mm
1R164
outer diameter: 34mm
Press Needle bearing with
arbor press and the outer
diameter 34mm end
surface of 1R164 until
Needle bearing complete
stops.