Lubrication; Disassembly/Assembly; Drill Chuck; Necessary Repairing Tools - Makita BHP459 Technical Information

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

[1] NECESSARY REPAIRING TOOLS

Code No. Description
1R359 Drill chuck removing tool
Hex wrench 10

[2] LUBRICATION

It is not required to lubricate the gear section because the portion is replaced as a factory- lubricated gear unit.

[3] DISASSEMBLY/ASSEMBLY

[3] -1. Drill Chuck

DISASSEMBLING
Note: It is required to remove Drill chuck when replacing Gear assembly, but you need not when replacing
the parts that are independent of Gear assembly.
(1) Remove M6x22 Flat head screw. (Fig. 1)
(2) Preset the machine. (Fig. 2) And set Hex wrench 10 to Vise. (Fig. 3)
(3) While holding Hex wrench 10 with Drill chuck firmly, remove Drill chuck from Gear assembly. (Fig. 4)
Fig. 1
Open Drill chuck fully and remove M6x22
Flat head screw by turning it clockwise.
Fig. 3
Setting of Hex wrench10
CORRECT
Hold the long end.
Hex wrench 10
Vise
Fig. 4
Clockwise
Clockwise* recoil force
1
of Machine
Hex wrench 10
Vise
(Use this tool if Drill chuck cannot be removed by the method of
described in "[3]-1 Drill chuck disassembling".)
removing/ mounting Drill chuck
Note: Use Impact driver to unscrew
M6x22 Flat head screw if it
could not be removed
manually.
M6x22 Flat head screw
(Left handed thread)
Grip flat surfaces
of Hex wrench 10.
Vise
[A]
Hex wrench 10,
viewed from side [A]
Use for
Fig. 2
Set Change ring
to Drill mode.
Change ring
Do not hold
the short end.
Counterclockwise
Counterclockwise* force to be applied by operator
2
Note: The rotational direction is viewed from operator.
1. Hold Hex wrench 10 with Drill chuck and grip Machine.
Important:
Grip Machine tightly with both hands to provide
the sufficient counterclockwise*
clockwise* recoil force of Machine.
1
2. Pull Switch trigger slowly.
3. Spindle rotates counterclockwise*
Drill chuck is removed from spindle.
P 3/ 11
Speed change lever
Set Speed change lever
to Low speed mode
designated with 1.
F/R change lever
Set F/R Change lever
to Reverse (counter-
clockwise) rotation.
Attach Battery.
WRONG
Do not hold edges
of Hex wrench 10.
[A]
Hex wrench 10,
viewed from side [A]
force against
2
and consequently
2