Makita Maktec MT904 Technical Information Download Page 3

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[3] DISASSEMBLY/ASSEMBLY

[3] -1. Armature, Spiral bevel gear (small), Ball bearings 6000DDW, 608ZZ 

DISASSEMBLING

Wrench 11

1. Remove Carbon brush.

(1)  Disassemble Armature and small Spiral bevel gear from Gear housing as drawn in 

Fig. 2

.

2. Remove four M5x18 Pan head

    screws, then separate Bearing 

    box section from Gear housing.

3. Remove four 5x25 Tapping screws,

    then separate Gear housing from

    Motor housing.

4. While holding M7 Hex nut with Wrench 11, turn Armature counterclockwise to remove the nut 

    from Armature assembly.

5. Pull off Armature from Gear housing while holding

    small Spiral bevel gear by hand so that the gear 

    does not fall off from Gear housing.

6. Remove small Spiral bevel gear from 

    Gear housing.

Small Spiral bevel gear

Armature

Armature

Spiral bevel gear

(small)

Note in Disassembling

:

If it is difficult to pull off Armature by hand, do the following steps.

1. Lubricate small spiral bevel gear and Armature shaft with spray lubricant.

2. Wrap the gear with a cloth to protect the gear teeth.

3. Using water pump pliers or the like, firmly grip the gear wrapped with cloth, then turn the gear.

M7 Hex nut

M7 Hex nut

Fig. 2

Small Spiral bevel gear

Carbon brush (2 pcs.)

M5x18 Pan head

screw (2 pcs.)

Motor housing

Gear housing

M5x25 Pan head

screw (4 pcs.)

Bearing box

Gear housing

Summary of Contents for Maktec MT904

Page 1: ...e standard equipment may vary by country or model variation Side grip 1 Lock nut wrench 1 Optional accessories Wheel cover PRODUCT P 1 10 Weight according to EPTA Procedure 01 2003 kg lbs 2 8 6 1 2 8...

Page 2: ...ear 11 Spiral bevel gear 35A Number of teeth 35 Number of teeth 11 Spiral bevel gear 11A Spiral bevel gear 38 Number of teeth 38 Number of teeth 11 11 000 rpm 10 000 rpm Large spiral bevel gear Gear o...

Page 3: ...re from Gear housing while holding small Spiral bevel gear by hand so that the gear does not fall off from Gear housing 6 Remove small Spiral bevel gear from Gear housing Small Spiral bevel gear Armat...

Page 4: ...se 1R291 Retaining ring R 26 Ball bearing 6000DDW 2 Remove Ball bearing from Gear housing as drawn in Fig 3 3 Remove Ball bearing 6000DDW together with Armature assembly by tapping the end of Gear hou...

Page 5: ...bearing installation hole of Gear housing Then Pull off Armature Ball bearing 6000DDW Switch trigger Switch trigger Spindle 1 When assembling Gear housing to Motor housing face Bearing box installatio...

Page 6: ...iner 39 from Bearing box 7 Put Bearing box onto 1R350 Then press down Flat washer 15 and Ball bearing 6202DDW from Bearing box with 1R028 Note Ball bearing 6202DDW is damaged by the removal process Do...

Page 7: ...R037 on the gear teeth of large Spiral bevel gear and then press it down carefully so that the gear teeth do not damage 1 Disassemble Gear housing from Motor housing and pull off Armature from Gear ho...

Page 8: ...ust on Shoulder pin 5 Fig 10 2 Assemble the parts for Shaft lock mechanism as drawn in Fig 11 Fig 10 Fig 11 Plastic dust Shoulder pin 5 Shoulder pin 5 2 Assemble Pin cap by pressing it to Shoulder pin...

Page 9: ...e countries instead of blue Black lead wire is used for some countries instead of brown Noise suppressor is not used for some countries Noise suppressor 1 2 1 2 Blue Brown Color index of lead wires sh...

Page 10: ...to Switch while facing their wire connected portion to Motor housing Field lead wires Noise suppressor Lead wires of Power supply cord B Wiring in Handle set Fix this Field lead wire in this Lead wir...

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