Gear Assembly, Rotor Section; Caution For Handling Of Rotor - Makita BHP459 Technical Information

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[3] DISASSEMBLY/ASSEMBLY

[3] -2. Gear Assembly, Rotor Section

DISASSEMBLING
(1) Disassemble Rotor section and Gear assembly. (Figs. 8 and 9)
Fig. 8
1. By unscrewing nine 3x16 tapping screws,
remove Housing R from Housing L.
3x16 Tapping screw
(9 pcs.)
Housing R
4. Push Speed change lever assembly toward Rotor side
until it stops to have space between the pin on the lever
of Gear assembly and rear Compression spring 4.
Rotor side
rear
Compression
spring 4
Space between rear Compression spring 4
and the pin on the lever of Gear assembly.
(2) Separate Rotor from Stator. (Fig. 9)
Fig. 9
Put Rotor section on a workbench so that
the drive end of Rotor touches the workbench.
Press Stator down to separate it from Rotor.

Caution for Handling of Rotor

When handling or storing multiple Rotors, be sure to keep a proper distance between Rotors as shown in Fig. 10A
because Rotor has a strong magnet, failure to follow this instruction could result in:
• Finger injury caused by pinching between Rotors pulling each other.
• Magnetic loss of Rotors or damage on the magnet portion of Rotors. (Fig. 10B)
Fig. 10A
2. Remove Gear assembly
together with Rotor section
and Speed change lever.
Speed change
lever
Gear assembly
Rotor section
Housing L
5. While lifting up Rotor side of Speed change
lever assembly, pull it toward the direction
designated with black arrow.
Drill chuck side
Rotor side
Pin on the lever of
Gear assembly
front Compression spring 4 compressed
by the lever of Gear assembly
Rotor
Stator
Fig. 10B
* Magnetic loss of Rotors
* Damage on the magnet portion of Rotors
P 5/ 11
3. Remove Speed change lever
and Rotor section from
Gear assembly.
Gear assembly
Rotor section
Drill chuck side
Rotor
Stator