Check Balance Shaft; Remove The Crankshaft - Segway VILLIAN SSV Series Service Manual

CRANKCASE\CRANKSHAFT\BALANCE SHAFT
C C
C C
X X
A A
C C
D D
E E

Check balance shaft

◆ Check whether the balance shaft gear is damaged.
◆ Measurement of shaft diameter 【B】, 【C】
B B
◆ There is journal size group identifi er engraved on the
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.
B B

Remove the crankshaft

B B
◆ Remove:
◆ ◆ 【 【 A A 】 】 Connecting rod bolts
◆ Remove the big end cover of the connecting rod.
◆ Carefully remove the crankshaft 【B】 from the
◆ Remove the oil pump chain assembly on the
B B
3-4-17
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.
balance block plane in the fi gure. The external test
identifi er is journal 【C】 size, and the internal test
is journal 【B】 size.
Balance shaft journal dimensions
Ⅰ
Standard
37.992 ~ 37.996 mm
(1.4957" ~ 1.4959")
values：
limit:
Connecting rod bolts
upper crankcase.
crankshaft 【C】, oil seal 【D】, timing chain
assembly 【E】.
Ⅱ
37.996 ~ 38 mm
(1.4959" ~ 1.4961")
37.973 mm(1.495")