P 9/ 25
Repair
[3] DISASSEMBLY/ ASSEMBLY
[3] -2. Drill chuck assembly for BHR243 (cont.)
ASSEMBLING
(1)Holding the flat portions of Chuck holder in vise, assemble Drill chuck to Chuck holder by turning it clockwise using Hex wrench 10.
(2)Secure Drill chuck with M6x22 Flat head screw by turning it counterclockwise using Impact driver.
(3) Assemble Drill chuck to Spacer. (Fig. 23) Then mount two Steel balls 6. (Fig. 24)
(4)Mount Torsion spring 31. Then assemble Drill chuck to Change cover. (Fig. 25)
(5)Mount Steel ball 5, Leaf spring and Flat washer 24 to Chuck holder, then secure them with Ring spring 21. (Fig. 26)
Fig. 23
While fitting the flat portions |
|
of Chuck holder to Spacer, |
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mount Drill chuck to Spacer. | Chuck holder |
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Spacer |
|
Fig. 25
Fig. 24
Steel ball 6 (2 pcs.)
Chuck holder
Spacer 
Note: Apply Makita grease RB No.00 to Steel balls 6 to protect them from falling.
Insert the short arm of Torsion spring 31 into the hole of Chuck holder using small pliers.
Insert the long arm of Torsion spring 31 into the hole of Change cover through the hole of Change ring, then assemble Change ring to Change cover. (See Fig. 6.)
By turning Drill chuck approx. 75° clockwise, Drill chuck can be fastened to Change cover.
75°
hole for Torsion spring 31
Spacer | Torsion spring 31 | Drill |
| ||
Chuck holder | long arm of | chuck |
short arm of | Torsion spring 31 |
|
|
| |
Torsion spring 31 |
| Change |
|
| |
| Change ring | cover |
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| |
| Change cover |
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Fig. 26
Leaf spring
Flat washer 24
Ring spring 21
Steel ball 5