P 6 / 8
R
epair
[3] -2. Disassembling/Assembling Motor Section
[3] -3. Assembling F/R Change Lever to Switch
1) Separate the assembly of Armature and
Yoke unit from the machine
.
(Refer to 1) to 4) of [3] -1.)
2) Put the assembly of Yoke unit and Armature
on a work bench with the drive end of the
Armature down.
Separate Yoke unit from armature by pressing
down towards the work bench. (
Fig. 13
)
ASSEMBLING
DISASSEMBLING
Fig. 13
Yoke unit
Do the reverse of disassembling steps.
Important:
1) Yoke unit is not reversible when assembled to Armature. Be sure to assemble with the notch in Yoke unit on the
drive-end of Armature. If assembled wrong, the Motor section cannot be assembled to Housing (L). (
Fig. 14
)
2) Because Yoke unit is a strong magnet, when assembling Armature to Yoke unit, be sure to hold the commutator portion
as illustrated to left in
Fig. 15
. Do not hold the Armature core as illustrated to right or your fingers will be pinched
between Yoke unit and the fan of Armature that is pulled strongly by the magnet force.
Fig. 14
Fig. 15
3) When assembling the Motor section to Housing (L),
fit the notch in Yoke unit onto the projection on
Housing (L) (
Fig. 16
)
Your fingers can be pinched
and injured.
[Wrong]
[Correct]
[Wrong]
[Correct]
Notch
Fig. 16
Fig. 17
notch
Housing (L)
projection
Hammer case complete side
Put the projection on Switch between the prongs of F/R change lever. (
Fig. 17
)
Projection
Prong
