Repair; Necessary Repairing Tools; Disassembly/Assembly; Drill Chuck - Makita DHP480 Technical Information

R
epair
CAUTION: Repair the machine in accordance with "Instruction manual" or "Safety instructions".

[1] NECESSARY REPAIRING TOOLS

Code No. Description
Hex bar 10 with square socket
1R298
1R359 Chuck removing tool
--- Hex wrench 10
[2] LUBRICATION
It is not required to lubricate, because this product has gear mechanism of factory assembled.

[3] DISASSEMBLY/ASSEMBLY

[3] -1. Drill chuck

DISASSEMBLING
(1) Remove M6x22 (-) Flat head screw. Then, preset the machine as drawn in Figs. 1-2 and 1-3. And then, set 1R298 to
the machine. (Fig. 2)
Fig. 1
1. Open Drill chuck fully and remove M6x22
Flat head screw by turning it clockwise with
Slotted screwdriver.
Note: Use Impact driver to unscrew M6x22
(-) Flat head screw if it cannot be
removed manually.
M6x22 (-) Flat head screw
(Left handed thread)
(2) For removing Keyless drill chuck, it is necessary to use Impact wrench with strong fastening torque such as
Model BTW450 (440 N.m in max fastening torque).
Remove Drill chuck as drawn in Fig. 2.
Fig. 2
1. Fit Anvil of TW450D to the socket of 1R298.
1R298
BTW450
removing Drill chuck
removing Drill chuck
(If it is impossible to remove as per the illustration in Figs. 1 and 2.)
removing Drill chuck
2. Set Speed change lever to
Low speed mode designated
with 1.
3. Set Change ring to Drill mode.
Anvil
Use for
2. Firmly holding the machine at its grip portion,
remove Keyless drill chuck by driving BTW450
in reverse mode.
Firmly hold the grip portion during the work.
Note: Use 1R359 to remove Keyless drill chuck
if it cannot be removed in this step.
See Figs. 6 and 7.
P 2/ 12
4. Set 1R298 to Keyless
drill chuck.
1R298