P 4 / 6
R
epair
[3] -2. Large spiral bevel gear and Ball bearing 6203ZZ
DISASSEMBLING
Fig. 7
Fig. 8
1) Separate Bearing box from Gear housing complete by unscrewing four M6x22 Hex socket head bolts.
It is not necessary to remove Carbon brushes.
2) Remove Ball bearing 6000ZZ with Bearing Extractor (No.1R269). (Fig. 7)
3) Insert two Drill chuck removers (No.1R048, 1R049) between Large spiral bevel gear and Bearing box,
and set the Bearing box on the turn base of arbor press so that the wheel cover installation surface of
Bearing box is placed on the edge of the U-shaped notch of the turn base.
Then remove spindle by pressing down with arbor. (Fig. 8)
4) After removing Large spiral bevel gear, separate Bearing retainer 50
by removing three M5x16 Pan head screws. (Fig. 9)
5) Remove Ball bearing 6203ZZ by hitting Bearing box straight down
against flat surface of work-bench. (Fig. 10)
If cannot be removed, use arbor press and a round bar for arbor of
an appropriate size as illustrated in Fig. 11.
Note: The gear and the ball bearing can be replaced without disassembling the Motor section.
Fig. 10
Fig. 11
Ball bearing
6203ZZ
Round bar for arbor
No.1R269
U-shaped notch of arbor press
Ball bearing 6000ZZ
Bearing box
Drill Chuck Remover 11
(No.1R048)
Drill Chuck Remover 15
(No.1R049)
Spindle
Fig. 9
Pan head screw
M5x16 (3 pcs)
Bearing retainer 50
MT900: Spiral bevel gear 53B
MT901: Spiral bevel gear 53A
