Makita BHP459 Technical Information page 6

R
epair
[3] DISASSEMBLY/ASSEMBLY
[3] -2. Gear Assembly, Rotor Section (cont.)
ASSEMBLING
(1) Assemble Gear assembly and Rotor section in the reverse order of disassembly. (Refer to Figs. 9 and 8)
Note: Be careful not to pinch your fingers between Stator and Rotor's fan when assembling Rotor. (Fig. 11)
Fig. 11
1. While holding Stator on workbench, insert Rotor into Stator
slowly until the drive end of Rotor reaches the workbench.
Rotor
Stator
3 Before pushing Rotor section (Rotor and Stator) fully
in Gear assembly, make sure that Rotor's gear engages
with the super gears of Gear assembly to rotate them smoothly.
(2) Assemble Speed change lever assembly. (Fig. 12)
Fig. 12
Pin on the lever
of Gear assembly
Rotor side
rear Compression
spring 4
Rotor side
Space between the rear Compression
spring 4 and the pin on the lever of
Gear assembly.
Rotor side
Pin on the lever of Gear assembly fit to
the coil of the rear Compression spring 4
front Compression spring 4
Drill chuck
side
Drill chuck
side
The front Compression spring 4
compressed by the lever of
Gear assembly.
Drill chuck
side
2. When the drive end of Rotor reaches
the workbench, lift up Stator slowly.
Rotor's gear
Spur gears
Rotor section
1. Apply the front Compression
spring 4 of Speed change lever
assembly to the flat side
(without pin) of Gear assembly
for Speed change.
2. Push Speed change lever assembly
toward Rotor side until it stops to
have space between the pin of
Gear assembly and the rear
Compression spring 4.
3. Fit the pin of Gear assembly to
Spring's coil with slowly
returning Speed change lever
assembly toward Drill chuck side.
4. Slide Speed change lever
assembly to the either position
2 (High speed mode) or
1 (Low speed mode).
P 6/ 11
Gear assembly