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[3] DISASSEMBLY/ASSEMBLY
[3]-2. Gear Assembly, DC Motor

ASSEMBLING

The following portions of DC motor, Motor bracket and Gear ass’y have to face the same side. (

Fig. 8

)

       * Red point mark (designated as plus terminal) on DC Motor
       * None of protrusion side of Motor bracket
       * Gear assembly’s protrusion

Do not face the protrusion of
Motor bracket to the protrusion
of Gear ass’y and the red 
point mark on DC motor.

Fig. 8

red point mark
on DC motor

Gear ass’y

(1) When assembling Speed change lever ass’y, make sure two Compression springs are assembled to its bottom
     in advance.   (

Fig. 9

(2) Fit the protrusion of Gear ass’y into Compression spring 4 in Speed change lever ass’y .   (

Fig. 10

)

(3) After mounting, set Speed change lever ass’y to low speed mode or high speed mode.  (

Fig. 11

)  

Motor bracket

DC motor

none of protrusion
side

protrusion of Gear ass’y

[3]-3. Speed Change Lever

ASSEMBLING

Compression
spring 4 (2pcs.)

Speed change lever
ass’y

protrusion of Gear ass’y

Fig. 9

Fig. 10

Fig. 11

Speed change
lever ass’y

Slide Speed change lever to either of 
the direction designated in arrow, and hold
the position. 

1: Low speed mode

2: High speed mode

Summary of Contents for 8391D

Page 1: ... m in lbs Torque setting Steel Wood Soft joint Hard joint No load speed min 1 rpm Cell Voltage V Capacity Ah High Net weight with Battery 1822 kg lbs Low Max output W Ni Cd 18 1 3 2 0 Yes Yes Yes 2 speed Yes 2 3 5 1 13 1 2 36 1 7 16 Masonry 13 1 2 16 stage drill mode Clutch torque setting N m in lbs 1 0 4 0 9 35 38 340 27 240 42 370 0 1 300 0 400 1 5 13 1 16 1 2 230 Impacts per minute min 1 ipm Hi...

Page 2: ...tion of Spindle 2 Fix the short portion of Hex wrench 8 to Drill chuck and clamp the long portion of Hex wrench 8 in Vise 3 Set Speed change lever in the low speed mode and F R change lever in the Forward clockwise rotation mode Then Install Battery 4 Hold the machine firmly and pull the switch trigger to rotate Spindle until the motor is locked Note Pull the switch trigger so that Spindle reaches...

Page 3: ...er ass y from Gear ass y Gear ass y Remove Gear ass y Speed change lever ass y and DC motor with Switch from Housing set L as illustrated above Disassemble Housing set R by unscrewing 3x16 Tapping screws 9 pcs Pull off Gear ass y while turning it clockwise viewed from DC motor side Now Gear ass y can be replaced Motor bracket Motor bracket Remove DC motor from Motor bracket by unscrewing M3x6 Pan ...

Page 4: ... assembling Speed change lever ass y make sure two Compression springs are assembled to its bottom in advance Fig 9 2 Fit the protrusion of Gear ass y into Compression spring 4 in Speed change lever ass y Fig 10 3 After mounting set Speed change lever ass y to low speed mode or high speed mode Fig 11 Motor bracket DC motor none of protrusion side protrusion of Gear ass y 3 3 Speed Change Lever ASS...

Page 5: ...itch Fit the protrusion of Switch to the prong of F R Change lever Prong Housing set L Before assembling Gear ass y and DC motor Leaf spring has to be mounted to Housing set L as illustrated in Fig 12 F R Change lever can be assembled to Switch as illustrated in Fig 13 ASSEMBLING Fig 13 Leaf spring 3 5 F R Change Lever Switch Protrusion F R Change lever ...

Page 6: ...Lead wire red to Terminal M1 Lead wire black to Terminal M2 Switch viewed from Housing set L side Switch viewed from Housing set R side red point mark Connecting of Lead Wire red to DC Motor Connect Lead wire red to the Terminal marked with red point mark Housing set R side The terminal of this protruded side is plus Switch Battery holder Switch ...

Page 7: ...f the machine Front side Battery holder Switch s lead wire black Switch s lead wire red Battery holder Rear side Housing set L Housing set R Side This protruded Side is fitted to Housing set R Front side Rear side Switch s Lead wire black Switch s Lead wire red Fig D 2A Red point mark Connect Switch s Lead wire black to Battery holder while facing it to rear side Connect Switch s Lead wire red to ...

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