Makita HP2050 Technical Information page 4

R
epair
< 1 > Lubrication
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.
Apply 25g of MAKITA grease N No.1
to the inner part of gear housing.
< 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.
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.
No.1R223
Torque wrench
No.1R224
Ratchet head
Spindle
Cam
No.1R298 Hex wrench
Fastening
Loosening
Gear housing
Gear housing
Fig. 1
Fig. 2
Spur gear 29-37
Change lever B
No.1R139 Drill chuck extractor
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