Segway VILLIAN SSV Series - Check Balance Shaft; Remove the Crankshaft

CRANKCASE\CRANKSHAFT\BALANCE SHAFT
3-4-17
Remove the crankshaft
◆
Remove:
◆
◆
【
【
A
A
】
】
Connecting rod bolts
Connecting rod bolts
◆
Remove the big end cover of the connecting rod.
◆
Carefully remove the crankshaft
【
B
】
from the
upper crankcase.
◆
Remove the oil pump chain assembly on the
crankshaft
【
C
】
, oil seal
【
D
】
, timing chain
assembly
【
E
】
.
B
B
Check balance shaft
◆
Check whether the balance shaft gear is damaged.
◆
Measurement of shaft diameter
【
B
】
,
【
C
】
size, the measurement of the interval of 90° in two
directions. If the journal size exceeds the limit, the
balance shaft needs to be replaced.
◆
There is journal size group identifi er engraved on the
balance block plane in the fi gure. The external test
identifi er is journal
【
C
】
size, and the internal test
is journal
【
B
】
size.
Group identification is divided into "I" and "II", size
comparison table below. If the measured size exceeds
the limit, the balance shaft needs to be replaced.
Balance shaft journal dimensions
ⅠⅡ
Standard
values
：
37.992 ~ 37.996 mm
(1.4957" ~ 1.4959")
37.996 ~ 38 mm
(1.4959" ~ 1.4961")
limit: 37.973 mm(1.495")
B
B
C
C
B
B
X X
C
C
A
A
D
D
E
E
C
C
B
B