Repair
P 4 / 17
< 1 > Lubrication
< 2 >Assembling and disassembling
( 1 ) Disassembling drill chuck See Fig. 2.
1. Hold the flat portion of spindle with No.1R139 "drill chuck extractor" which is fixed with vise.
2. Insert No.1R298 "hex wrench" into drill chuck and grip it firmly with drill chuck.
3. Turn No.1R298 "hex wrench" anti-clockwise, with No.1R223 "torque wrench" to which No.1R224
"ratchet head" is attached. Then, drill chuck can be disassembled from spindle.
Apply MAKITA grease N No.1 to the following portions marked with black triangle to protect parts and machine
from unusual abrasion. See Fig. 1.
Spindle
Cam
Apply 25g of MAKITA grease N No.1
to the inner part of gear housing.
Gear housing
Gear housing
Spur gear 29-37
Change lever B
Fig. 1
No.1R139 Drill chuck extractor
No.1R298 Hex wrench
No.1R223
Torque wrench
No.1R224
Ratchet head
Fig. 2
In case of broken drill chuck, it may be impossible to grip hex wrench with drill chuck.
If so, firmly grip drill chuck with pipe wrench. And turn the pipe wrench anti-clockwise.
So, the drill chuck can be disassembled.
( 2) Assembling drill chuck See Fig. 2.
1. Preset the torque level of No.1R223 "torque wrench" to 35.7N.m - 45.9N.m (350kgf.cm - 450kgf.cm).
2. Hold the flat portion of spindle with No.1R139 "drill chuck extractor" which is fixed with vise
3. Insert No.1R298 "hex wrench" into drill chuck and grip it firmly with drill chuck.
4. Turn No.1R298 "hex wrench" clockwise, with No.1R223 "torque wrench" to which No.1R224
"ratchet head" is attached. Then, drill chuck can be assembled to spindle.
Fastening
Loosening
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