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R
epair
[3] DISASSEMBLY/ASSEMBLY
[3] -3. Gear Unit (that engages with Armature)
DISASSEMBLING
1) Remove Handle L from Handle R by unscrewing eight 4x18 Tapping screws. Remove the assembly of Gear housing
and Motor section from Handle R by unscrewing three 4x35 Tapping screws. (Fig. 16)
Fig. 16
Tapping screw 4x18 (8 pcs)
Handle L
Handle R
2) Remove Gear unit from Handle R. (Fig. 17)
3) Remove Ball bearing 604ZZ from Gear unit by following the steps below:
1. Move Ball bearing 604ZZ so as to provide a space between Helical gear 35 and
Ball bearing 604ZZ for inserting 1R356. (Fig. 18)
2. Insert 1R356 (2 pcs) into the space provided in the previous step.
Apply 1R278 to the end face of Gear shaft. By pressing 1R278 using arbor press,
Ball bearing 604ZZ can be removed from Gear unit. (Fig. 19)
4) Set Gear unit on 1R037 with the side of Helical gear 15 up. Apply 1R281 to the
end face of Gear shaft. By pressing 1R281 using arbor press, Gear shaft can be
removed form Gear unit. (Fig. 20)
Fig. 18
1R269
Ball bearing 604ZZ
Fig. 19
1R278
1R356
(2 pcs)
Fig. 20
Ball bearing 604ZZ
Helical gear 35
Ball bearing 6900ZZ
Helical gear 15
Tapping screw 4x35 (3 pcs)
Motor section
Gear housing
Fig. 17
Handle R, viewed from
Motor section side
Gear unit
1R281
Helical gear 15
1R037
Ball bearing
6900ZZ
Helical gear 35
Gear shaft
P 7 /13
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