Makita Maktec MT622 Manual

* With Top grip

Model No.

Description

CONCEPT AND MAIN APPLICATIONS

Specification

Dimensions: mm (")

Width (W)

Height (H)

Length (L) 267 (10-1/2)

86 (3-3/8)

396 (15-5/8)

MT622

13mm Drill

MT622 has been developed as a cost-effective maktec 13mm Drill for emerging countries.

Its features are as follows:

• Without Variable speed control switch

• With Rotation reversing facility

Standard equipment

Note: The standard equipment may vary by country.

Top grip .........................................................1

Chuck key .....................................................1

Key holder .....................................................1

Optional accessories

D-handle

PRODUCT

P 1/ 8

Weight according to

EPTA-Procedure 01/2003*: kg (lbs) 2.7 (6.0)

Double insulationProtection against electric shock

Yes

Soft grip

NoVariable speed control by trigger

2.0 (6.6)Power supply cord: m (ft)

No load speed: minˉ¹= rpm 600

Rotation reversing facility Yes (Rocker switch)

MT622

Specification Model

240 3.3 50/60 750 550

Continuous Rating (W)

Voltage (V) Cycle (Hz) Input Output

350

Max. Output (W)

110

120

220

230

7.2

6.6

3.6

3.5

50/60

750

550

Current (A)

350---

350

Drill chuck type Keyed

Chuck capacity: mm (") 1.5 - 13 (1/16 - 1/2)

Capacities: mm (") 13 (1/2)

Wood

Steel

36 (1-7/16)

TECHNICAL INFORMATION

OFFICIAL USE

for ASC & Sales Shop

P 2/ 8

Repair

[3] DISASSEMBLY/ASSEMBLY

[3] -1. Armature

[1] NECESSARY REPAIRING TOOLS

CAUTION: Repair the machine in accordance with “Instruction manual” or “Safety instructions”.

Code No. Description Use for

1R139 Drill chuck extractor locking Spindle when removing Drill chuck S-13

1R223 Torque wrench shaft 20-90N∙m

removing Drill chuck S-13

removing damaged Drill chuck S-13

removing Ball bearings 608ZZ and 6202DDW

removing/ assembling Retaining ring S-14

removing/ assembling Bearing retainer 23-36

1R224 Ratchet head 12.7 (for 1R223)

1R269

1R291 Retaining ring S and R pliers

1R298 Hex. bar 10 with Square socket

1R340 Bearing retainer wrench

781024-2 Wrench 43

Bearing extractor

[2] LUBRICATION

DISASSEMBLING

Apply Makita grease FA No.2 to the following portions designated with the black triangle to protect parts and product

from unusual abrasion.

Fig. 1

Item No. Description Amount

5g approx.

Portion to lubricate

Gear housing complete

1. Remove Carbon brushes.

2. Remove four 5x40 Tapping screws.

Carbon brushes

5x40 Tapping

screws (4 pcs.)

3. Separate Gear housing section

from the machine.

4. Pull off Armature from

Motor housing complete.

5. Remove Ball bearings 608ZZ from the both side of

Armature assembly using with 1R269.

And then, remove Insulation washer.

9Gear complete 7-41 Teeth portions for smooth engaging

Teeth portions for smooth engagingSpur gear 47

Ball bearing 608ZZ

Insulation washer

Disassemble Armature as drawn in Fig. 2.

Fig. 2

P 3/ 8

Repair

DISASSEMBLING

[3] DISASSEMBLY/ASSEMBLY

[3]-2. Drill chuck

Hex

wrench

ASSEMBLING

Assemble Drill chuck as shown in Fig. 4.

Note: Set the fastening torque of 1R223 to 70N·m ~ 80N·m (714kgf·cm ~ 816kgf·cm) and turn 1R223 clockwise.

Wrench 43

(781024-2)

1. Hold 1R139 firmly with vise, then set the machine

to 1R139 by fitting the flat portion of Spindle

to the groove of 1R139.

2. Set Wrench 43 (781024-2) to Drill chuck so that

the pin of Wrench 43 is inserted into the hole of

Drill chuck.

3. Turn Wrench 43 (781024-2) counterclockwise

to remove the damaged Drill chuck.

Damaged Drill chuck

Drill chuck S-13

(1) Remove Drill chuck S-13 from the machine as drawn in Fig. 3

or Fig. 3A.

(2) In case of the damaged Drill chuck, use Wrench 43 (781024-2) to remove the damaged one as drawn in Fig. 3A.

1R139

1. Secure a hex wrench in Drill chuck firmly.

2. Hold 1R139 firmly in vise, then set the machine

to 1R139 by fitting the flat portion of Spindle

to the groove of 1R139.

3. Attach a pipe to a hex wrench, and then turn the pipe

counterclockwise to remove Drill chuck.

Note: Be careful not to remove the hex wrench from

the pipe and Drill chuck.

Fig. 3A

Fig. 3

Fig. 4

Pipe

1R298

Drill chuck S-13

1R224

1R223

1R139

1. Secure 1R298 in Drill chuck firmly.

2. Hold 1R139 firmly in vise, then set the machine

to 1R139 by fitting the flat portion of Spindle

to the groove of 1R139.

3. Attach 1R224 to 1R223, and then set them to 1R298.

4. Turn 1R223 clockwise to assemble Drill chuck to

Spindle.

Repair

DISASSEMBLING

[3] DISASSEMBLY/ASSEMBLY

[3]-3. Spindle and Gear section (cont.)

Fig. 6

1. Remove Pin 3. And then, remove Flat washer 6 and Gasket.

Note: Be careful not to lose Pin 3.

2. Remove Retaining ring S-14

with 1R291.

Spindle

Key 5

Ball bearing

6202DDW

Ball bearing 626ZZ

Ball bearing

6202DDW

Flat washer 6

3. Remove Spindle and Ball bearing 6202DDW from

Gear housing section. Then, remove Gear complete 7-41

and Spur gear 47 from Gear housing as drawn below.

P 4/ 8

Retaining ring S-14

Gear complete 7-41

4. Use Gear complete 7-41 as a jig to remove

Ball bearing 626ZZ from Gear housing.

Insert the shaft end of Gear complete 7-41 into

Ball bearing 626ZZ temporarily.

Spur gear 47

5. While tilting shaft of Gear complete 7-41,

tap the edge ofGear housing complete with

a plastic hammer to remove Ball bearing 626ZZ

from Gear housing complete.

6. Remove Ball bearing

6202DDW from

Spindle with 1R269.

Ring 15

Gear complete 7-41

Pin3

Gasket

Ball bearing 626ZZ

Spindle

1R269

(1) Remove Drill chuck from the machine as drawn in Fig. 3/ 3A.

(2) Remove Gear housing as drawn in Fig. 5.

(3) Disassemble Gears from Gear housing complete as drawn in Fig. 6.

Fig. 5

1. Hold Switch handle in vise carefully.

Note: Use a rag to protect Switch handle in vise.

Remove Bearing retainer 22-36 by turning it clockwise with 1R340.

2. Separate Gear housing complete from

the machine by removing four 5x40

Tapping screws.

Bearing retainer 23-36 Gear housing

5x40 Tapping screw

(4 pcs.)

Rag

1R340

Switch cover handle

Repair

ASSEMBLING

(1) Assemble Gear section by reversing the disassembly procedure. (Fig. 7)

(2) Assemble Gear housing and Gear cover to Motor housing section by reversing the disassembly procedure.

Refer to Fig. 2 of page 2.

Note: 1. Use a rag to protect Switch handle in use of vise.

2. Turn 1R340 counterclockwise for setting Bearing retainer 23-36 in place.

P 5/ 8

[3] DISASSEMBLY/ASSEMBLY

[3]-3. Spindle and Gear section (cont.)

Fig. 7

1. Assemble Ball bearing 626ZZ

to Gear housing complete.

2. Pressfit Ball bearing 6202DDW

to Spindle.

3. Insert Ring 15 to Spindle.

Then, mount Key 5 to

the groove of Spindle.

Spindle

Key 5

4. Assemble Spindle section to Gear housing complete.

Then, assemble Spur gear 47 to Spindle while fitting

its cut portion to Key 5. And then, secure the spur gear

with Retaining ring S-14.

5. Insert Gear complete 7-41 into Ball bearing

626LLB with Spur gear 47 engaged.

Note: Do not forget to assemble Flat washer 6.

6. Assemble Pin 3 and Gasket to Gear housing complete.

Retaining ring S-14

Ring 15

Ball bearing

6202DDW

Spindle

Ball bearing

626ZZ

Rubber pin 4

cut portion

Spur gear 47 Gear complete 7-41

Flat washer 6

Gasket

Pin 3

Circuit diagram

P 6/ 8

White

Color index of lead wires' sheath

Black

Blue

Brown

Field

Orange

Purple Switch

Power supply cord

Circuit without Radio interference suppression

Fig. D-1

Circuit with Radio

interference suppression

Non-insulated sleeveNon-insulated sleeve

[View from Commutator side]

Closed end splice

is used for some

countries.

Terminal block

#18 AWG

Non-insulated connector

Black lead wire

is used for some

countries.

White lead wire

is used for some

countries.

Strain relief

#18 AWG

Circuit of Switch

Forward mode:

conduct 2 - 6, 3 - 5

Reverse mode:

conduct 2 - 3, 5 - 6

Field

Switch

Resistance

Non-insulated

sleeve

Line filter (If it is used.)

• Two holes type Line filter

is used for low voltage areas.

• One hole type Line filter

is used for high voltage areas.

Closed end

splice

Closed end splice

is used for some

countries.

Terminal block

Closed end

splice

Power supply cord

Two holes typeOne hole type

[View from Commutator side]

#20 AWG

#18 AWG

Noise

suppressor

(If it is used.)

Non-insulated connector

#18 AWG

Black lead wire

is used for some

countries.

White lead wire

is used for some

countries.

Strain relief

#18 AWG

Wiring diagram

Fig. D-2

Field lead wires have to be guided as follows.

1. Guide out Field lead wires while tightening

these wires in Motor housing so that these wires

can be easily connected to Switch without touching

to the edge of Opening.

2. Fix these lead wires in Lead wire holders.

Field

Wire connected

portion

Lead wire

holder

edge of Opening

Lead wire

holder

Assemble Field to Motor housing

while facing the wire connected

portion to Cap side.

Setting and Wiring of Field Lead wire

P 7/ 8

Cap

P 8/ 8

Setting and Wiring of Noise suppressor

and Resistance

Facing the wire connected side to Switch handle set L,

set Noise suppressor and Resistance to the handle.

Switch handle set L

Noise

suppressor

Noise

suppressor

(If it is used.)

Terminal block

(If it is used.)

Resistance

Closed end splice

Put Closed end splice

to the place here.

Be careful not to put

any lead wires under

Terminal block.

Inner wall Rib

Switch

Wiring through Line filter

Pass Field lead wires (orange, purple)

through Line filter as drawn below.

And put it to the place as drawn right.

Line filter

Put Field lead wires between Rib and

the inner wall of Switch handle L.

Wiring in Switch handle L

with Radio interference suppression

Wiring diagram

Fig. D-3

Two holes type

One hole type

[Right] [Wrong]

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