Makita Maktec MT811 Manual

Continuous Rating (W)

Voltage (V) Cycle (Hz) Input Output Max. Output(W)

220 2.0 50 / 60 430

0 - 2,800

1.5 - 13 (1/16 - 1/2)

0 - 30,800

220 340

1.9 50 / 60 430 220 340

230 / 240

Model No.

Description

PRODUCT

Current (A)

MT811

13mm (1/2") Hammer Drill

New power tool series from MAKITA

* Less expensive but service life is as long as existing

MAKITA models.

* Easy to-repair-construction

TECHNICAL INFORMATION

CONCEPT AND MAIN APPLICATIONS

Specification

Standard equipment

Optional accessories

< Note > The standard equipment for the tool shown may differ from country to country.

P 1 / 7

Chuck ability : mm ( " )

Keyless chuck

Reverse switch

No load speed : (min -1= rpm)

Blows per min. : (min -1= bpm)

Drilling

capacity : mm ( " )

Steel

Concrete

* Chuck key S13 ............................................... 1 pc.

* Side grip ............................................... 1 pc.

Wood

Protection from electric shock

Net weight :Kg (lbs )

Cord length : m ( ft )

Yes

by double insulation

2.0 (6.6)

1.6 (3.5)

13 (1/2)

18 (11/16)

* Stopper pole

Dimensions : mm ( " )

Width ( W )

Height ( H )

Length ( L ) 272 (10-3/4)

194 (7-5/8)

71 (2-13/16)

Repair P 2 / 7

< 1 > Lubrication

Apply MAKITA grease N. No.1 to the following portions marked with black triangle to protect

parts and product from unusual abrasion.

Steel ball 3.5

Pin 4

Spindle

Gear housing Helical gear 39

Cam

Apply 3.6g of the above mentioned grease

to the gear room. Apply 0.1g of the above mentioned grease

to the steel ball and pin accepting hole.

Apply 0.1g of the above mentioned grease

to the portion contacting with helical gear 39.

< 2 > Disassembling drill chuck

Pre-set the fastening torque of the torque wrench with 25 - 30 N.m, when assembling.

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

Holding No.1R298 "hex socket" with drill chuck, and turn the hex socket with No.1R223 "Torque wrench"

anti-clockwise. So drill chuck can be disassembled from spindle. See Fig. 1.

< 3 > Assembling drill chuck

< 4 > Disassembling and assembling cam

(Disassembling)

Hold inner housing with vise.

Insert the screwdriver into the space between cam and inner housing.

Disassemble cam with the screwdriver as illustrated in Fig. 2.

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

Holding No.1R298 "hex socket" with drill chuck, and turn the hex socket with No.1R223 "Torque wrench"

clockwise. So drill chuck can be assembled to spindle. See Fig. 1.

No.1R298 Hex socket

No.1R223

Torque wrench

No.1R224 Ratchet head

1R139 Drill chuck extractor

Fig. 1

Fig. 2 Fig. 3

(Assembling)

Assemble cam by pressing with arbor press as illustrated in Fig. 3.

Inner housing Inner housing

Cam

Repair P 3 / 7

< 5 > Disassembling helical gear 39 See Fig. 4.

1. Take off retaining ring S12, pin 4 and steel ball 3.5 from spindle.

2. Set gear housing on No.1R037 "Bearing setting plate", and set No.1R284 "Round bar for arbor" on spindle.

3. Disassemble spindle by pressing the round bar for arbor set on spindle, with arbor press.

Then, helical gear 39 can be removed form gear housing.

< 6 > Assembling helical gear 39 See Fig. 5.

1. Assemble spindle by pressing with arbor press.

2. Assemble helical gear 39 to spindle by pressing 1R028 "Bearing setting pipe" on the helical gear, with arbor press.

3. Fix helical gear 39 with retaining ring S12, and put steel ball 3.5 and pin 4 into the hole of spindle.

Fig. 4

Fig. 5

Retaining ring S12

Steel ball 3.5

Pin 4

Spindle Spindle

<Note>

Be careful, not to lose pin 4,

steel ball 3.5 and retaining

ring S12, when removing them.

No.1R284

Round bar for arbor

No.1R037

Bearing setting plate

Arbor press

Spindle

Helical gear 39

Spindle

No.1R284

Round bar for arbor

Gear housing

Arbor press

1R035

Bearing setting plate

1R028

Bearing setting pipe

Helical gear 39 Retaining ring S12

Steel ball 3.5

Pin 4

Spindle

Circuit diagram P 4 / 7

Color index of lead wires

Black

White

Red

Orange

Purple

Black

or brown White

or blue

1a 1b 2b

Noise

suppressor

Switch

A side

Switch

B side

Brush

holders Field

P 5 /

Insulated

terminal

Choke coil

Switch

Wiring diagram P 5 / 7

Wiring diagram of field lead wires

Field lead wire (red)

Field lead

wire (white)

Field lead

wire (black)

Switch

Rib B

Rib C

Rib A

Rib E

Rib D

Rib F

Put the insulated terminal

into the space illustrated below.

Boss A

Pass field lead wire (red)

between rib B and rib C

as illustrated below.

Be careful, not to pinch

the lead wires connected with

switch terminal 4 and 6, with boss A.

Pass field lead wire (black)

between rib D and rib E.

Pass field lead wire

(white) between rib A

and rib B.

Polyethylene tube

Pass field lead wire

(red) between rib E

and rib F.

Wiring diagram of lower portion

of switch

Noise

suppressor

Wiring diagram P 6 / 7

Wiring diagram of wires connected with brush holders ( With choke coil)

Rib E

Rib F

Boss A

Polyethylene tube

Be careful, not to pinch

the lead wires connected with

switch terminal 4 and 6, with boss A.

Brush holder

Receptacle

Switch

Fig. A

Upper

Lower

Inflect the receptacles as illustrated in Fig. A.

The receptacle of lower brush holder side has

to be so inflected, that it does not cross the line of .

Choke coil

(orange)

Choke coil

(purple)

Noise suppressor's

lead wire (white)

Pass noise suppressor's lead wire (white)

and choke coil lead wire (orange)

between rib E and rib F.

Lead wire (purple)

Pass noise suppressor's lead wire (white)

and choke coil lead wire (orange)

between rib E and rib F.

Switch

Wiring diagram of lower portion

of switch

Noise

suppressor

Wiring diagram P 7 / 7

Wiring diagram of wires connected with brush holders ( Without choke coil)

Polyethylene tube

Rib E

Rib F

Boss A

Be careful, not to pinch

the lead wires connected with

switch terminal 4 and 6, with boss A.

Brush holder

Receptacle

Switch

Fig. B

Upper

Lower

Receptacle

Inflect the receptacles as illustrated in Fig. B.

The receptacle of lower brush holder has

to be so inflected, that it does not cross the line of .

Pass noise suppressor's lead wire (white)

and lead wire (orange) between rib E

and rib F.

Lead wire

(purple)

Switch

Wiring diagram of lower portion

of switch

Noise

suppressor

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