Makita maktec MT813 Manual

Model No.
Description
PRODUCT
TECHNICAL INFORMATION
CONCEPT AND MAIN APPLICATIONS
P 1 / 9
Specification
Standard equipment
Optional accessories
110
220
230
240
6.8 50 / 60
50 / 60
50 / 60
50 / 60
3.4
3.2
3.1
710
710
710
710
350
350
350
350
500
500
500
500
Continuous Rating (W)
Voltage (V) Cycle (Hz) Input Output Max. Output(W)
Current (A)
Note: The standard equipment for the tool shown above may differ from country to country.
Dimensions: mm ( " )
Width ( W )
Height ( H )
Length ( L ) 297 (11-3/4)
71 (2-13/16)
194 (7-5/8)
MT813
Model MT813 has 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
Reverse switch
No load speed: (min -1= rpm)
Blows per min.: (min -1= bpm)
Drilling
capacity: mm (")
Steel
Masonry
Wood
Protection against electric shock
Power supply cord: m (ft)
Net weight: kg (lbs)
0 - 3,000
0 - 45,000
Keyed chuck
1.5 - 13
(1/16 - 1/2)
16 (5/8)
Brick
13 (1/2)
30 (1-3/16)
Yes
Double insulation
2.0 (4.4)
2.0 (6.6)
* Depth gauge

P 2 / 9
Repair
Apply Makita grease N. No.1 to the following portions designated by the black triangle to protect parts and product
from unusual abrasion.
[2] LUBRICATION
[1] NECESSARY REPAIRING TOOLS
Item No.
1R005
Part Description
Retaining ring R pliers For removing retaining ring R-35
1R022 Bearing plate For removing ball bearing from armature
For press-fitting helical gear 37
1R023 Pipe ring
1R028 Bearing setting pipe
1R035 Bearing setting plate
For removing helical gear 371R037 Bearing setting plate
1R139 Drill chuck extractor
For replacing drill chuck
For replacing drill chuck
1R223 Torque wrench shaft
1R224 Ratchet head
For removing helical gear 371R283 Round bar 50 for arbor
For removing Ball bearing 607ZZ (commutator end)1R279 Round bar for arbor ø 5mm
For removing retaining rings1R291 Retaining ring R and S pliers
1R298 Hex bar 10 with square socket
Purpose
Item No. Part description Portion to lubricate
6 Gear housing Gear room (about 3g)
7 Spindle Surface that contacts with the inner race of ball bearing 6202DDW
12 Helical gear 37 Cam portion which engages with that on inner housing complete
15 Steel ball 3.5 All the surface
16 Pin 4 All the surface
Inner housing complete
Ball bearing 6202DDW

P 3 / 9
Repair
[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

P 4 / 9
[3] -2. Removal/Installation of Drill Chuck
[3] -3. Replacing Helical Gear 37 and Ball Bearing 6202DDW
Firmly fix Drill chuck extractor (No.1R139) in vise, and lock spindle with the drill chuck extractor.
Holding Hex bar 10 with square socket (No.1R298) securely with drill chuck, and turn the hex socket counterclockwise
using Torque wrench shaft (No.1R223) and Ratchet head (No.1R224). Now drill chuck can be removed from spindle.
(Fig. 4)
Fig. 4
Hex bar 10 with square socket (No.1R298)
Torque wrench shaft
(No.1R223)
Ratchet head (No.1R224)
Drill chuck extractor
(No.1R139)
Hold Hex bar 10 with square 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 4x18 tapping screws. (Fig. 5)
3) Remove pin 4 and steel ball 3.5 from spindle in order not to lose or damage them. And then remove retaining ring S-12
from spindle with Retaining ring R and S pliers (No.1R291). (Fig. 6)
Fig. 5
Tapping screw 4x18
(3pcs)
Inner housing
Fig. 6
Pin 4
Steel ball 3.5
Retaining ring R and S pliers
(No.1R291)
Retaining
ring S-12
REMOVAL
INSTALLATION
DISASSEMBLING
Repair

P 5 / 9
Repair
Fig. 7 Fig. 8
[3] -3. Replacing Helical Gear 37 and Ball Bearing 6202DDW (cont.)
No.1R037
No.1R283
Gear housing Spindle
Compression
spring 16
Helical gear 37
Spindle
Spindle
Ball bearing
6202DDW
4) Put gear housing on Bearing setting plate (No.1R037) set on arbor press, and put Round bar 50 for arbor (No.1R283)
on spindle. By pressing down the round bar with arbor press, spindle is removed from gear housing.
Now helical gear 37 can be replaced. In this step, compression spring 16 is assembled to spindle. (Fig. 7)
Important: Ball bearing 6202DDW is deformed by the heavy pressure applied for spindle removal.
Therefore, also replace ball bearing 6202DDW when replacing helical gear or spindle.
5) By removing retaining ring R-35 with Retaining Ring R Pliers (No.1R005), ring 12 and ring 19 are removed from
gear housing.
6) Remove compression spring 16 from spindle, and insert 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 the surface of spindle that contacts
with ball bearing 6202DDW. Insert spindle into ball bearing 6202DDW through the spindle hole in gear housing.
And press-fit spindle in gear housing with arbor press.
3) Put gear housing on Bearing setting plate (No.1R035)
set on arbor press. While applying Bearing setting
pipe (No.1R028) to helical gear 37, press-fit helical
gear 37 on spindle with arbor press. (Fig. 9)
Do not remove cam B on inner housing because it is securely factory press-fit. Attempt to remove cam B will result in
deformation of inner housing. If the cam is damaged, therefore, replace inner housing entirely.
ASSEMBLING
Fig. 9
No.1R035
No.1R028
Helical gear 37
Spindle

6
Circuit diagram
P 6 / 9
Color index of lead wires' sheath
Black
White
Red
Orange
Clear
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

Wiring diagram
P 7 / 9
[1] Wiring of Field Lead Wires
Route the field lead wires as illustrated below in Fig. 11 before mounting brush holder.
Rib B Rib A
Rib C
Rib F
Field lead wire (black) to
No.1a terminal on switch
Field lead wire (red) to
the No.3 terminal on switch
Field lead wire (black) to
the No.2a terminal on switch
Route between rib A and rib 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 this wire between rib B and rib C, and ensure that
it is tight between rib C and motor field in order to avoid
accidental contact with commutator.

Wiring diagram
P 8 / 9
[2] Wiring of Other Lead Wires When Choke Coils Are Used
*Connect lead wire from choke coil (purple)
with brush holder using insulated connector.
(See Fig. 12A below.)
Put in this position.
Bend the insulated connectors in the direction opposite to switch
as illustrated below.
Choke coil (orange) Put in this position.
Choke coil (purple)
Rib F
Rib E
Lead wire of noise
suppressor (clear)
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.)
**Connector with brush holder
lead wire (orange) assembled
*Insulated connector with brush
holder lead wire (purple) assembled
Switch
The end of bent insulated connector
must not positioned over this line.

Wiring diagram
P 9 / 9
Rib F
Rib E
[3] Wiring of Other Lead Wires When Choke Coils Are Not Used
Fig. 13
*Connect lead wire from choke coil (purple)
with brush holder using insulated connector.
(See Fig. 13A below.)
Lead wire of noise
suppressor (clear)
Route between
rib E and rib F.
Lead wire from choke coil
to brush holder (orange)
Route between rib E and rib F.
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)
**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
*Insulated connector with brush
holder lead wire (purple) assembled
Switch
The end of bent insulated connector
must not positioned over this line.
Brush holder