Makita BHP448 Technical Information page 3

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epair
[3] DISASSEMBLY/ASSEMBLY
[3] -1. Drill Chuck (cont.)
ASSEMBLING
(1) Set the machine. (Fig. 5 and 6)
(2) Set Hex wrench 10 to vise and described in Fig. 3.
(3) Set Drill chuck in place. (Fig. 7)
Fig. 5
Turn Drill chuck clockwise by hand until
it sits on the end of the threaded portion
of Spindle.
Drill chuck
End of the threaded
portion of Spindle
Fig. 7
Clockwise* force to be
applied by operator
Clockwise
Fig. 6
Set Speed change lever to Low speed
mode designated with 1.
Speed change lever
Set Change ring to Drill mode.
Change ring
*Note: The rotational direction is viewed from operator.
1. Hold Hex wrench 10 with Drill chuck and grip Machine.
Important: Grip Machine hard with both hands to provide
sufficient clockwise* force against
counterclockwise* recoil force of Machine.
2. Pull Switch trigger slowly to turn Spindle clockwise*.
Note: Pull the Trigger so that Spindle's rotating reaches full
speed in one second.
3. Drill chuck is tightened and consequently Spindle is locked.
4. Open Drill chuck fully, and tighten Drill chuck
with M6x22 Flat head screw by turning it
counterclockwise with Impact driver.
Counterclockwise
Counterclockwise recoil
force of Machine
Hex wrench 10
Note: Apply adhesive (ThreeBond 1321B/1342 or Loctite 242)
to threaded portion when re-using the removed M6x22
Flat head screw.
P 3/ 12
Set F/R Change lever
to Forward (clockwise)
rotation.
F/R change lever
Attach Battery.
M6x22 Flat head screw
(Left handed thread)