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[3] DISASSEMBLY/ASSEMBLY

[3] -1. Replacing Armature

Fig. 1

1. Separate handle cover from motor housing, and then remove brush holders together with carbon brushes. (Fig.  1)
2. After removing three M4x14 pan head screws, turn gear housing a little bit.  And by striking the edge of motor housing
    with plastic hammer, gear housing can be separated from motor housing.  In this step, armature is still assembled to
    gear housing. (Fig. 1
3. Armature can be removed from inner housing by striking inner housing with plastic hammer.  Remove rubber ring 19
    in this step. (Fig.  2)
4. Ball bearing 608ZZ (drive end) and 607ZZ (commutator end) can be removed with arbor press as illustrated in Fig. 3.
    Note: These ball bearings cannot be removed using Bearing extractor (No. 1R269) because there is no center hole
               on each end surface of the armature shaft. 

Note: Armature can be replaced without disassembling gear housing section.

Fig. 2

Pan head screw M4x14
(3pcs)

Pan head screw M4x14
(4pcs)

Brush holder and
carbon brush (2pcs each)

Gear housing

Change lever section

Handle cover

Inner housing

Gear housing

Armature

Rubber ring 19

Ball bearing
607ZZ

Fig. 3

Round bar for arbor ø 5mm
(No.1R279) 

Bearing plate
(No.1R022)

Pipe ring (1R023)

Armature

Ball bearing 607ZZ
(commutator end)

Note:   is not necessary when removing
           ball bearing 608ZZ on the drive-end.

Motor housing

Summary of Contents for maktec MT813

Page 1: ... been added to maktec hammer drill series as a 16mm 5 8 hammer drill providing industrial performance and durability at less expense Its brief features are 710W powerful motor Dust proof construction Model MT813K comes with a plastic carrying case Hammer Drill 16mm 5 8 Chuck key S 13 1 pc Key holder 1 pc Side grip 1 pc Plastic carrying case 1 pc exclusively for MT813K Chuck capacity mm Drill chuck...

Page 2: ...39 Drill chuck extractor For replacing drill chuck For replacing drill chuck 1R223 Torque wrench shaft 1R224 Ratchet head For removing helical gear 37 1R283 Round bar 50 for arbor For removing Ball bearing 607ZZ commutator end 1R279 Round bar for arbor ø 5mm For removing retaining rings 1R291 Retaining ring R and S pliers 1R298 Hex bar 10 with square socket Purpose Item No Part description Portion...

Page 3: ... Ball bearing 608ZZ drive end and 607ZZ commutator end can be removed with arbor press as illustrated in Fig 3 Note These ball bearings cannot be removed using Bearing extractor No 1R269 because there is no center hole on each end surface of the armature shaft Note Armature can be replaced without disassembling gear housing section Fig 2 Pan head screw M4x14 3pcs Pan head screw M4x14 4pcs Brush ho...

Page 4: ...socket No 1R298 securely with drill chuck Set the tightening torque of Torque wrench shaft No 1R223 to 35 45 N m And then fasten drill chuck to the machine by turning the hex socket clockwise with the torque wrench shaft and Ratchet head No 1R224 Fig 4 1 Remove armature from gear housing as described in 3 1 Replacing Armature Fig 1 and 2 2 Remove inner housing from gear housing by unscrewing three...

Page 5: ... spindle into ball bearing 6202DDW through the spindle hole on gear housing Now ball bearing 6202DDW can be removed from gear housing by striking spindle with plastic hammer Fig 8 3 4 Repairing Inner Housing 1 Put ball bearing 6202DDW ring 19 and ring 12 in place in gear housing and secure them with retaining ring R 35 2 Assemble compression spring 16 to spindle and apply Makita grease N No 1 to t...

Page 6: ...Purple Top of switch Choke coil Choke coil Field Brush holder Bottom of switch This lead wire can be brown for some country This lead wire can be blue for some country Note Some countries do not use choke coil Switch Note Some countries do not use noise suppressor Noise suppressor Fig 10 ...

Page 7: ...ib B Route between rib D and rib E Route between rib E and rib F Noise suppressor Put noise suppressor in this position if used Rib E Rib D Boss A Be careful not to pinch the following lead wires between boss A and handle cover Field lead wire white to the No 4 terminal on switch Field lead wire red to the No 6 terminal on switch Fig 11 Field lead wire white to the No 4 terminal on switch Route th...

Page 8: ... Route between rib E and rib F Lead wire from choke coil to brush holder orange Route between rib E and rib F Brush holder Boss A Be careful not to pinch the following lead wires between boss A and handle cover Lead wire of Brush holder purple Lead wire of Brush holder orange Fig 12A Fig 12 Connect lead wire from choke coil orange with brush holder using insulated connector See Fig 12A below Conne...

Page 9: ...Be careful not to pinch the following lead wires between boss A and handle cover Lead wire of Brush holder purple Lead wire of Brush holder orange Connect lead wire from choke coil orange with brush holder using insulated connector See Fig 13A below Bend the insulated connectors in the direction opposite to switch as illustrated below Fig 13A Connector with brush holder lead wire orange assembled ...

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