Makita HP1631, HP1630 Repair DISASSEMBLY/ASSEMBLY Armature, Disassembly/Assembly, Drill Chuck

Repair

[3]DISASSEMBLY/ASSEMBLY (cont.)

[3]-1. Armature

DISASSEMBLY

1)Remove Handle cover by loosening 4x18 Tapping screws, and then remove Carbon brushes with Brush holders.

2)Remove Armature, Gear housing cover and Gear housing by loosening 4x30 Tapping screws and striking Motor housing with plastic hammer.

3)Drive the thread of 1R045 into 1R346 tightly, and set them to Gear housing cover. (Fig. 2)

4)Remove Armature from Gear housing cover by turning the handle of 1R045.

5)Remove Ball bearings 607LLB and 608LLB of Armature with 1R269.

P 3 / 6

Fig. 2

Thread of 1R045

1R346

[3]DISASSEMBLY/ASSEMBLY

[3]-2. Drill Chuck

DISASSEMBLY

1)Hold 1R139 in vise.

2)Hold 1R298 with Drill chuck.

3)Fit the flat portions of Spindle to 1R139. (Fig. 3)

4)Turn Drill chuck counterclockwise with 1R298, 1R224 and 1R223. (Fig. 4) Note: If Keyed drill chuck does not work, use 781024-2 to remove it.

If Keyless drill chuck does not work, hold the flat portions in vise and fit 781007-2 into the flat portions of Spindle (Fig. 5), and then turn Spindle clockwise.

Fig. 3

Flat portions of Spindle

1R139

Vise

Fig. 4

Sleeve of Drill chuck

1R298

1R224

1R223

Fig. 5

Flat portions of

Keyless drill chuck

DISASSEMBLY

Turn 1R223 clockwise to tighten Drill chuck to fastening torque 34.3 to 44.1 N.m.