Makita DGA404 Technical Information

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Instruction manual (164 pages)

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ECHNICAL INFORMATION

Models No.

Description

ONCEPT AND MAIN APPLICATIONS

The subject models are cordless angle grinders powered by 18V Li-ion battery,

and equipped with highly enhanced Brushless DC motor compared to the current

models DGA402/ DGA452.

A built-in controller changes the cutting speed automatically according to load condition,

enabling users to obtain high speed rotation on light duty application/ high torque on

heavy duty application.

Note: BL1815 is not compatible.

pecification

Specification

Voltage: V

Capacity: Ah

Cell

Energy capacity: W

Charging time (approx.): min. 15, 18, 22, 36, 45 with DC18RC

Diameter

Wheel size: mm (") Hole diameter

Max. thickness

No load speed: min.ֿ ¹= rpm

Switch type

Overload warning lamp

Electronic current limiter

Soft start

Anti-restart function

Battery fuel gauge

Soft grip

Weight according to

EPTA-Procedure 01/2003: kg(lbs)*2

*2 With 3.0Ah battery

tandard equipment

Lock nut wrench ............................................ 1

Side grip ......................................................... 1

Depressed center grinding wheel ................... 1 (100mm for DGA404, 115mm for DGA454, 125mm for DGA504)

Battery cover .................................................. 1 (except -Z- model)

Plastic carrying case ....................................... 1 (except -Z- model)

Charger DC18RC ........................................... 1 (except -Z- model)

Li-ion battery BL1830 or BL1840 ................. 2 (except -Z- model)

Note: The standard equipment may vary by country or model variation.

ptional accessories

Depressed center wheels

Rubber pads

Abrasive discs

Wire brushes

Diamond wheels

DGA404, DGA454, DGA504

18V Cordless Angle Grinders

Model DGA404

DGA454

1.5, 2.0, 3.0, 4.0, 5.0

27, 36, 54, 72, 90

100 (4)

115 (4-1/2) 125 (5)

16 (5/8)

2.4 (5.3)

Abrasive cut off wheels

Toolless wheel covers

Sanding lock nuts

Fast charger DC18RC

Fast charger DC18SD

DGA504

Li-ion

22.23 (7/8)

6 (1/4)

8,500

Slide

Yes

2.5 (5.5)

2.5 (5.6)

Charger DC24SC

Automotive charger DC18SE

Four port multi charger DC18SF

OFFICIAL USE

for ASC & Sales Shop

PRODUCT

Dimensions: mm (")

Length (L)*1

All

362 (14-1/4)

DGA404

Width (W)

DGA454

DGA504

DGA404

Height (H)

DGA454,

DGA504

*1 With BL1830/ BL1840/ BL1850

Li-ion battery BL1815N

Li-ion battery BL1820

Li-ion battery BL1830

Li-ion battery BL1840

Li-ion battery BL1850

P 1/ 14

117 (4-5/8)

130 (5-1/8)

140 (5-1/2)

145 (5-3/4)

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Page 1 Lock nut wrench ..........1 Side grip ............1 Depressed center grinding wheel ....1 (100mm for DGA404, 115mm for DGA454, 125mm for DGA504) Battery cover ..........1 (except -Z- model) Plastic carrying case ........1 (except -Z- model) Charger DC18RC ...........
Page 2 Item No. Description Portion to lubricate Lubricant Amount O ring 26 Inner periphery that appears from Gear housing cover Makita grease a little SG. No.0 Spiral bevel gear 10 Gear teeth in the gear room of Gear housing Fig. 1...
Page 3 P 3/ 14 epair [3] DISASSEMBLY/ASSEMBLY [3]-1. Rotor, Ball bearing 629LLB/ 607LLB, Spiral bevel gear 10 DISASSEMBLING (1) Remove Gear housing cover with Rotor section from Motor housing. (Figs. 2, 3 and 4) (2) Disassemble Rotor section. (Fig. 5) Fig. 2 Fig.
Page 4 P 4/ 14 epair [3] DISASSEMBLY/ASSEMBLY [3]-1. Rotor, Ball bearing 629LLB/ 607LLB, Spiral bevel gear 10 (cont.) DISASSEMBLING (3) Disassemlble Gear housing cover and Rotor section. (Figs. 6 and 7) Fig. 6 Hook the jaws of 1R045 with Gear housing cover, then push out Rotor. Press down Ball bearing 629LLB with 1R286.
Page 5 P 5/ 14 epair [3] DISASSEMBLY/ASSEMBLY [3]-1. Rotor, Ball bearing 629LLB/ 607LLB, Spiral bevel gear 10 (cont.) ASSEMBLING Assemble by reversing the disassembly procedure. Note: Be careful about the points shown in Figs. 10, 11 and 12. Fig. 10 Receive the inner race of Ball bearing 629LLB in Gear housing cover with 1R027, Gear housing and pressfit the shaft of Rotor into the hole of Ball bearing 629LLB.
Page 6 P 6/ 14 epair [3] DISASSEMBLY/ASSEMBLY [3]-2. Spiral bevel gear 37, Ball bearing 696ZZ and Ball bearing 6201DDW DISASSEMBLING Note: The subject parts can be removed without disassembling Motor section. Disassemble Bearing box section as drawn in Fig. 13 to Fig. 19. Fig.
Page 7 P 7/ 14 epair [3] DISASSEMBLY/ASSEMBLY [3]-2. Spiral bevel gear 37, Ball bearing 696ZZ and Ball bearing 6201DDW (cont.) ASSEMBLING Fig. 20 Assemble by reversing the disassembly procedure. 1R029 Note: When Spindle is pressfit into Spiral bevel gear 37: 1. insert the thread of Spindle into the hole of 1R034 to receive the stepped portion of Spindle on 1R034.
Page 8 P 8/ 14 epair [3] DISASSEMBLY/ASSEMBLY [3]-4. Assembling of Stator complete Refer to Figs. 23 and 24. Fig. 23 Fit four projections on Housing set into four the mating cavity in Stator complete. Mating cavity on the left side and the right side (Two each) Stator complete Projection in Housing on the left side and the right side (Two each) Fig.
Page 9 P 9/ 14 epair [3] DISASSEMBLY/ASSEMBLY [3]-5. Assembling of Switch knob and Switch lever Refer to the following and next pages. (Figs. 25, 26, 27, and 28) Fig. 25 Fig. 26 Set Torsion spring 2 in place of Lever, and then Insert the hook of Switch knob into pass Pin 2 through the holes of Lever.
Page 10 P 10/ 14 epair [3] DISASSEMBLY/ASSEMBLY [3]-5. Assembling of Switch knob and Switch lever (cont.) Fig. 28 Insert one end of Pin 2 into the hole of Housing L. Place the top projection on the reverse side of Switch knob and put the one end of Torsion spring 2 on the rib into the groove of Housing L.
Page 11 P 11/ 14 ircuit diagram Fig. D-1 Flag terminal with lock Battery terminal (#187, t=0.8mm) Flag terminal with lock (#250, t=0.8mm) Lead wire Line filter (if used) (red, #14*) Lead wire (yellow, 22AWG*) Lead wire Resistor unit (red, 14AWG*) Lead wire (black, 14AWG*) Lead wire Tape...
Page 12 P 12/ 14 iring diagram Fig. D-2 Connect Lead wire (white) and Lead wire (orange) to Switch with Insulated terminal. Be careful about the directions of the insulated terminals. Insulated terminals Lead wire (white) between Terminal 1 and Terminal 2 Place Resistor unit and Connector 2-SD in the area Lead wire (orange) from Controller circled by a blue broken line.
Page 13 P 13/ 14 rouble shooting Whenever you find any trouble in your machine, first, refer to this list to check the machine for solution. Fig. D-3 Note in Repairing Star mark (1) Use the full charged battery which has the star mark. (Fig. D-3) (2) Check the functions by repeating 10 times.
Page 14 P 14/ 14 rouble shooting Test for recognizing the trouble on Stator complete mark on the tester: Refer to Fig. D-5.) (1) Set Digital tester (1R402) in the diode mode ( (2) Remove Battery, and then turn on Switch. (Fig. D-6) (3) Attach Black tester bar to Plus terminal of Battery terminal.

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Dga504 Dga454

Makita DGA404 Technical Information

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