Maktec MT817 Technical Information Download Page 4

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[3] DISASSEMBLY/ASSEMBLY

[3] -1. Armature (cont.)

DISASSEMBLING

[3] -2. Drill Chuck

ASSEMBLING

(2) Remove Ball bearings from Armature shaft as drawn in 

Fig. 3

.

Assemble by reversing the disassembly procedure. Refer to 

Figs. 3 and 2.

1. Remove Ball bearing 608DDW  

    with 1R269.

2. The claws of 1R269 cannot hold Ball bearing 607ZZ firmly because of

    the small gap between the bearing and insulation washer. So use Water

    pump pliers to secure the legs firmly as shown below. 

Water pump pliers

Claws of 1R269

Fig. 3

Ball bearing 607ZZ

Insulation washer

Legs

Ball bearing 608DDW

1R269

Ball bearing 607ZZ

R

epair

DISASSEMBLING

1. Attach 1R224 to 1R223.

2. Attach 1R298 to R224.

(1) Arrange the repairing tools as drawn in 

Fig. 4.

(2) Remove 13 mm Drill chuck as drawn in 

Fig. 5

.

Fig. 4

Fig. 5

1R224

1R223

R139

1R298

1R298

1R223

Vise

Drill chuck

1. Open the Drill chuck.

2. Fix 1R139 to Vise and set

    Drill chuck to the groove of

    1R139.

3. Insert 1R298 into Drill chuck

    and turn 1R223 counterclockwise.

ASSEMBLING

Assemble by reversing the disassembly procedure. Refer to 

Figs. 5 and 4

.

Note

: Set the fastening torque of 1R223 to 

26.0 N.m ~ 30.10 N.m

 (

265 Kgfcm ~ 306 Kgfcm

) and turn 1R223 clockwise.

Summary of Contents for MT817

Page 1: ...50 60 50 60 50 60 3 8 2 0 1 9 430 430 430 220 220 220 220 340 340 340 220 50 60 2 1 430 220 340 340 Continuous Rating W Voltage V Cycle Hz Input Output Max Output W Current A Dimensions mm Width W Height H Length L Model No The image above is MT817 MT817 MT818 255 10 258 10 1 8 193 7 5 8 72 2 13 16 Chuck capacity mm Chuck type Reverse switch Impacts per min min ˉ ipm Capacities mm Steel Concrete W...

Page 2: ... 37 rotates Cam portion Hole where Steel ball 3 5 and Pin 4 are assembled Where Ball bearing 6002DDW touches drum portion when using in Hammer drill mode Cam housing complete Spindle Steel ball 3 5 Retaining ring WR12 Viewing from Helical gear 37 side Retaining ring R 32 Pin 4 Amount Portion to lubricate 1R035 1R037 1R139 1R223 1R224 1R258 1R269 1R283 1R298 Bearing setting plate 15 2 holding spind...

Page 3: ...m housing complete by striking its edge with plastic hammer 3 DISASSEMBLY ASSEMBLY 3 1 Armature DISASSEMBLING 1 Remove Handle cover by loosening three 4x18 Tapping screws And then remove Carbon brushes together with Brush holders 2 Remove three 5x25 Tapping screws And then twist Motor housing or Gear housing so that the edge of Motor housing can be tapped with plastic hammer to disassemble 3 Separ...

Page 4: ... Claws of 1R269 Fig 3 Ball bearing 607ZZ Insulation washer Legs Ball bearing 608DDW 1R269 Ball bearing 607ZZ Repair DISASSEMBLING 1 Attach 1R224 to 1R223 2 Attach 1R298 to R224 1 Arrange the repairing tools as drawn in Fig 4 2 Remove 13 mm Drill chuck as drawn in Fig 5 Fig 4 Fig 5 1R224 1R223 R139 1R298 1R298 1R223 Vise Drill chuck 1 Open the Drill chuck 2 Fix 1R139 to Vise and set Drill chuck to ...

Page 5: ... to lose them 2 Remove Retaining ring WR 12 with 1R004 Cam housing complete Gear housing Steel ball 3 5 Pin 4 1R004 3 Put Gear housing onto 1R037 while fitting Spindle to the hole Spindle 1R037 1R026 4 Put 1R026 on Spindle 5 Press 1R026 with Arbor press so that Spindle is pushed out slightly 6 Put 1R238 on Spindle and press 1R283 with Arbor press to remove Spindle 7 Helical gear 37 and Spindle wit...

Page 6: ...housing Retaining ring R 32 Spindle 1R005 Gear housing Compression spring 16 1 Pass Spindle through Compression spring 16 and insert the Spindle into Ball bearing 6002DDW 2 Put Gear housing onto 1R035 while aligning the inserted Spindle head with the hole of 1R035 Set Helical gear 37 to Spindle with the Cam portion facing to Cam housing complete side 3 Press 1R028 with Arbor press Then Helical gea...

Page 7: ... 2 3 Separate Cam housing complete from Gear housing See the drawing on the upper left in Fig 6 4 Disassemble Cam complete as drawn in Fig 9 1 Assemble Cam complete to Cam housing as drawn in Fig 10 2 Assemble Lever case and Change lever Refer to Fig 9 Lever case Cam housing complete Change lever Cut on Cam housing complete Cam complete Vise Cam housing Center line of Cam housing 1 Set Cam complet...

Page 8: ...rple Color index of lead wires sheath Switch Chike coil Chike coil Field Brush holder A Brush holder B Black 2a 2 2b 1b 1 1a Noise suppressor Power supply cord Earth terminal It depends on specifications Viewed from commutator Circuit diagram ...

Page 9: ...ating direction 3 Fix the lead wire white in Lead wire holders Route Field lead wire white between Rib A and Rib B Route Field lead wire black between Rib C and Rib D Route Field lead wire white through the groove Route Field lead wire black through Lead wire holders 2 Route the Lead wire white between Rib D and Rib E Note Do not route the earth lead wire white over the top of the cables when rout...

Page 10: ...ib F and Rib G Rib G Fig D 4 Noise suppressor Switch Brush holders Do not route the earth lead wire white over the top of the cables when routing the lead wires through Lead wire holders Put Choke coil purple in the position shown below Connect the Connecting terminals to Brush holders from the rear side ...

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