R
epair
P 2 / 7
< 1 > Lubrication
Apply MAKITA grease N. No.1 to the following portions marked with black triangle to protect
parts and product from unusual abrasion.
Steel ball 3.5
Pin 4
Spindle
Gear housing
Helical gear 39
Cam
Apply 3.6g of the above mentioned grease
to the gear room.
Apply 0.1g of the above mentioned grease
to the steel ball and pin accepting hole.
Apply 0.1g of the above mentioned grease
to the portion contacting with helical gear 39.
< 2 > Disassembling drill chuck
<Note in assembling>
Pre-set the fastening torque of the torque wrench with 25 - 30 N.m, when assembling.
Firmly hold No.1R139 "Drill chuck extractor" with vise. And lock spindle with the drill chuck extractor.
Holding No.1R298 "hex socket" with drill chuck, and turn the hex socket with No.1R223 "Torque wrench"
anti-clockwise. So drill chuck can be disassembled from spindle. See Fig. 1.
< 3 > Assembling drill chuck
< 4 > Disassembling and assembling cam
(Disassembling)
Hold inner housing with vise.
Insert the screwdriver into the space between cam and inner housing.
Disassemble cam with the screwdriver as illustrated in Fig. 2.
Firmly hold No.1R139 "Drill chuck extractor" with vise. And lock spindle with the drill chuck extractor.
Holding No.1R298 "hex socket" with drill chuck, and turn the hex socket with No.1R223 "Torque wrench"
clockwise. So drill chuck can be assembled to spindle. See Fig. 1.
No.1R298 Hex socket
No.1R223
Torque wrench
No.1R224 Ratchet head
1R139 Drill chuck extractor
Fig. 1
Fig. 2
Fig. 3
(Assembling)
Assemble cam by pressing with arbor press as illustrated in Fig. 3.
Inner housing
Inner housing
Cam
Cam
