Repair, Armature and Spiral Bevel Gear

P 2/ 8

Repair

CAUTION: Disconnect the machine and remove the wheel for safety before repair/maintenance!

Code No.	Description	Use for

1R028	Bearing Setting Pipe	Installing Retaining ring S-12

1R045	Gear Extractor (large)	Removing Spindle from Bearing box

1R346	Center Attachment for 1R045	Removing Spindle from Bearing box (for modular use with 1R045)

1R269	Bearing Extractor	Removing Ball bearings

1R291	Retaining Ring S and R Pliers	Removing Retaining ring S-12 and R-32

1R343	Retaining Ring Setting Jig	Installing Retaining ring S-12

1R-----	Bearing Setting Plate (of proper size)	Assembling Ball bearing 629LLB and Armature to Gear housing cover

[2] LUBRICATION AND SEALING

Put 7g of Makita Grease N. No.1 into the gear room of Gear housing.

1)Remove 4x18 Tapping screw and separate Rear cover from Motor housing. Then remove Carbon brushes. (Fig. 1)

2)Unscrew four 4x30 Tapping screws and remove the assembled unit of Gear housing and Armature. (Fig. 1)

Fig. 1

Tapping screw 4x30 (4 pcs)

Gear housing cover

Carbon brush (2 pcs)

Rear cover

Gear housing

Motor housing

Tapping screw 4x18

3)Pull off the assembled unit of Armature and Gear housing cover from Gear housing.

4)Grip Armature securely by gloved hand, then remove Hex nut M6 by turning counterclockwise with wrench 10. (Fig. 2)

5)Remove Spiral bevel gear 10 by gloved hand. (Fig. 3)

If the gear cannot be removed by hand, do the following steps;

1.Spray some lubricant to the contact portion of the gear and Armature shaft.

2.Wrap the gear with wasted cloth for protection of the gear threads, then turn the gear using water pump pliers.

6)Remove Armature from Gear housing cover with Gear Extractor, large (No.1R045).

Fig. 2

Hex nut M6

Fig. 3

Spiral bevel gear 10

Wrench 10