Repair Cordless Driver Drills Makita 6207D

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Repair Cordless Driver Drills Makita 6207D

 

 

Repair

 

< 1 > Disassembling of drill chuck See Fig. 1.

For replacing gear assembly, drill chuck has to be disassembled.

 

Take the following steps.

 

1. Firmly hold No.1R139 "Drill chuck extractor" with vise. And lock spindle with the drill chuck extractor.

2. Open the jaws of drill chuck fully and take off flat head screw M6 x 22 by turning clockwise.

3. Disassemble drill chuck with hex wrench inserted into drill chuck by turning the hex wrench anti-clockwise.

 

If drill chuck is damaged, firmly hold the drill chuck with vise and turn spindle with wrench anti-clockwise as illustrated in fig. 1A.

 

 

 

 

< Note >

For replacing other than gear assembly, it is not necessary to disassemble drill chuck.

 

< 2 > Disassembling housing See Fig. 2.

 

1. Take off brush holder caps and carbon brushes.

2. Slide mode change lever to the drill mode side.

3. Unscrew ten PT3x16 Tapping screws.

 

 

< 3 > Disassembling gear assembly and motor section See Fig. 3.

 

Lifting up mode change lever, separated change ring, gear assembly, yoke, armature and endbell from housing as a set.

 

 

< 4 > Assembling leaf spring See Fig. 5.

 

Assemble leaf spring to housing L as illustrated in Fig. 4.

 

 

< 5 > Assembling change ring

 

When separating gear assembly from housing, change ring can easily slip off from gear assembly.

 

Re-assemble change ring to gear assembly as follows.

1. Align the widest bulge of spring holder to the bulge of gear assembly by turning spring holder.

2. Assemble change ring by aligning the bulge of change ring's edge to the portion of gear assembly marked with circle by the bulge of gear assembly.

 

 

< 6 > Assembling speed change lever

 

1. Before assembling, make sure that 2 compression springs are installed in the speed change lever. See fig. 6.

2. Assemble speed change lever to the boss of gear assembly as illustrated in Fig. 6A.

3. After assembling, slide the speed change lever to the change ring side or yoke assembling side and keep its slid position.

 

 

< 7 > Assembling mode change lever and housing

 

1. Hitch the hook of tension spring 2 to gear assembly and another hook to mode change lever as illustrated in Fig. 7.

2. Assemble mode change lever to gear assembly by inserting the boss of mode change lever into the groove of gear assembly as illustrated in Fig. 7.

3. Assemble motor section (yoke, armature and endbell) to gear assembly. Assemble them to housing L as illustrated in Fig. 7A.

 

 

4. Assemble compression spring 2 to lock lever as illustrated in Fig. 7B. Pulling mode change lever to the another side of housing L along the surface of gear assembly, insert the lock lever into mode change lever as illustrated in Fig 7C.

 

 

5. Pushing lock lever, slide mode change lever to the another side of housing L, and assemble housing R to housing L by fastening screws as illustrated in Fig 7D.

 

 

< 8 > Assembling drill chuck See Fig. 8.

 

1. Firmly hold No.1R139 "Drill chuck extractor" with vise. And lock spindle with the drill chuck extractor.

2. Hold No.1R298 "Hex socket" with the jaws of drill chuck firmly and turn the hex socket with No.1R223 "Torque wrench" clock wise.

 

<Note> Pre-setting the fastening torque for torque wrench : 49 N.m - 58.8 N.m

 

3. Fasten flat head screw M6 x 22 by turning it anti-clockwise.

 

 

Circuit diagram

 

 

Wiring diagram