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epair

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

 

[1] NECESSARY REPAIRING TOOLS

[2] LUBRICATIONS

Fig. 1

Code No.

Description

Use for 

1R004

Retaining ring S pliers ST-2

Removing / Assembling Ring spring 11

1R005

Retaining ring R pliers RT-2N Removing / Assembling Retaining ring R-32

1R006

Retaining ring R pliers RT-2E Removing / Assembling Retaining ring R-26 

1R031

Bearing setting pipe 28-20.2

Removing Spiral bevel gear 37

1R268

Spring pin extractor M3

Disassembling Shaft lock

1R269

Bearing extractor

Removing Ball bearing 696ZZ

Item No.

Apply the following lubricant to protect parts and product from unusual abrasion.

Description

O ring 26
Gear housing

Inner periphery
Gear room where Spiral bevel gears 37 and 10 rotate

9

18

Portion to lubricate 

Lubricant 

Amount

9

18

Makita grease SG.No.0

7g

a little

[3] DISASSEMBLY/ASSEMBLY
[3]-1. Armature, Ball bearing 629DDW, Ball bearing 607DDW, Spiral bevel gear 10

DISASSEMBLING

4x22 Tapping 
screw (4pcs.)

M4x14 Pan
head screw (4pcs.)

Remove Motor housing from Gear housing
by loosening four 4x22 Tapping screws.

Remove Bearing box from Gear housing
by loosening four M4x14 Pan head screws.

Bearing box

Gear housing

Fig. 3

Gear housing

(2) Separate Bearing box from Gear housing, and then remove Motor housing. (Fig. 3)

Motor housing

Fig. 2

4x14 Tapping screw

Switch lever
A complete

1. Remove Rear cover by loosening 4x14 Tapping screw.
2. Remove Switch lever A complete.
3. Shift Spiral springs from the heads of Carbon brushes to the edges of Brush holders.
    Then lift Carbon brushes so as to be detached from Armature’s commutator. 

(1) After separating Rear cover from Motor housing, disconnect Carbon brushes from Armature’s commutator. (Fig. 2)

Carbon brush

Spiral spring

edge of
Brush holder

Summary of Contents for GA4034

Page 1: ...1 rpm Diameter Hole diameter Wheel size mm Protection against electric shock Power supply cord m ft Net weight kg lbs GA4034 100 4 Brazil Australia 2 0 6 6 Other countries 2 5 8 2 1 8 4 0 1 9 4 2 11 0...

Page 2: ...tion to lubricate Lubricant Amount 9 18 Makita grease SG No 0 7g a little 3 DISASSEMBLY ASSEMBLY 3 1 Armature Ball bearing 629DDW Ball bearing 607DDW Spiral bevel gear 10 DISASSEMBLING 4x22 Tapping sc...

Page 3: ...Note Cover the work table with something soft to avoid the damage on Gear housing before disassembling Ball bearing 629DDW Ball bearing 629DDW Retaining ring R 26 Remove Retaining ring R 26 with 1R00...

Page 4: ...g 3 Remove Ball bearing 696ZZ with 1R269 and then separate Ring spring 11 from Spindle with 1R004 Fig 12 2 Spindle Spiral bevel gear 37 and Labyrinth ring can be removed as illustrated in Fig 13 3 Rem...

Page 5: ...031 and assemble Spindle Labyrinth ring works as a shield against dust If Labyrinth ring is assembled to Spindle facing the groove surface to the upper side it does not work as a shield against dust f...

Page 6: ...ages the inside surface of Pin cap producing plastic dust Pin cap Pin cap Compression spring 8 1R268 Shaft lock can be disassembled as illustrated in Figs 15 and 16 1R350 Fig 16 Fig 15 ASSEMBLING Fig...

Page 7: ...nd two 4x70 Tapping screws Fig 19 assemble Gear housing to Motor housing temporarily 2 Tap the front portion of Gear housing with plastic hammer until Field moves half from the original position Fig 2...

Page 8: ...eath Black Brown Blue AC DC Switch models for Keppel corporation limited in Singapore etc Fig D 2 Strain relief Brown lead wire is used for some countries Blue lead wire is used for some countries Noi...

Page 9: ...holder to Switch Fig D 3 AC DC Switch models for Keppel comporation limited in Singapore etc to Switch Field lead wire red Field lead wire red Field lead wire red Field lead wire black Field lead wir...

Page 10: ...or housing Motor housing Right side view Motor housing Belly side view Rib A Rib Switch Power supply cord Rib B Field lead wires red black have to be tight in Motor housing Brush holder Pass Field lea...

Page 11: ...as not to contact Rib B Rib B Rib A Switch Power supply cord Field lead wires red black have to be tight in Motor housing Motor housing Pass Field lead wire black by Rib on the Brush holder side Motor...

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