CRANKCASE\CRANKSHAFT\BALANCE SHAFT
3-4-18
Check the crankshaft
◆
Chec
k the timing sprocket tooth
k the timing sprocket tooth
【
A
】
, balance
driving gear
【
B
】
and sprocket tooth
【
C
】
on
crankshaft for damage or wear.
crankshaft for damage or wear.
◆
If the teeth are damaged, the entire crankshaft
If the teeth are damaged, the entire crankshaft
component needs to be replaced
component needs to be replaced
◆
Measure the size of each main shaft journal and
connecting rod journal, and choose two directions at
each position, 90° apart. If the journal wear exceeds
the limit, the crankshaft needs to be replaced
◆
There are two lines of marks with a total of 6
characters on the balance block near the output end
of the crankshaft. One column is the grouping mark
of the main shaft journal, using numbers, and the
other column is the grouping mark of the connecting
rod journal, using uppercase English letters
◆
The following table lists the corresponding
dimensions for each group. Check whether the
dimensions are within the specified range. If the
limits are exceeded, the crankshaft parts need to be
replaced.
◆
crankshaft journal diameter
Spindle diameter
1
Standard
46.98-46.987 mm
(1.8496-1.8499 in.)
Limit 46.933 mm(1.8478 in.)
2
Standard
46.988-46.995 mm
(1.8499-1.8502 in.)
Limit 46.947 mm(1.8483 in.)
3
Standard
46.996-47.004 mm
(1.8502-1.8506 in.)
Limit 46.963 mm(1.8489 in.)
connecting rod journal diameter
A
Standard
40.992-40.997 mm
(1.6139-1.6141 in.)
Limit 40.963 mm(1.6127 in.)
B
Standard
40.997-41.002 mm
(1.6141-1.6143 in.)
Limit 40.968 mm(1.6129 in.)
C
Standard
41.002-41.007 mm
(1.6143-1.6144 in.)
Limit 40.965 mm(1.6128 in.)
B
C
A
G
F
H
I
D
E
G
I
E
D
H
F
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