Brother Model KH--830 Service Manual page 39

3.
Needle ldection
is
not
conec:l
(C.Ual)
. Moue ling of Timing belt, Clutch wheel and pulley Is not correct.
Fig. 37
The connecting
part
of timing belt must fit both concave parts of
.i
pulley and clutch wheel.
'i
(See on paae
32
to adjsut.)
s
,
(Caua 2)
M ounting of rotary cam or clutch wheel
is
not correct.
The carriage movement is SYnchronized with the needle selection
mechanism with
timing
belt. Therefore, if there is a time lag, It
causes wron& needle selection.
(Correct position of rotii)'
am
and clutch wheel)
telector cam to
side.
(Cbeclc
the pOiition)
(Upper
riew)
the
CODC&ft
patt
of the clutdlwbulju11
"""'the rofaly cam shaft.
Fig. 38
When the flat part of r<?.JII!¥ cam is placed horizontally, the concave
part of clutch wheel muit be just over the rotii)' earn shaft.
2.1 Remove the timing belt 1nd belt sulde plate of the clutch
wheel. ·
2.2
Rem<We
the
map rln& for clutch wheel shaft from back side
and
~emove
the
car4;fee4ing
cam and card reader release cam.
2.3 Pull up the clutch wheel a little, and turn the clutch wheel to
get correct p<)8itlon. · ·
-37-
'
.