– 66 –
ENG
CRANKSHAFT AND CONNECTING RODS
4. Select:
• big end bearings (P
1
~ P
2
)
NOTE:
• The numbers
a
stamped into the crankshaft
web and the numbers
b
on the connecting
rods are used to determine the replacement
big end bearing sizes.
• “P
1
” ~ “P
2
” refer to the bearings shown in the
crankshaft illustration.
▼▼▼
▼
▼ ▼▼▼
▼
▼ ▼▼▼
▼
▼ ▼▼▼
▼
▼ ▼▼▼
▼
▼ ▼▼▼
▼
▼▼▼
For example, if the connecting rod “P
1
” and the
crankshaft web “P
1
” numbers are “6” and “2”
respectively, then the bearing size for “P
1
” is:
▲▲▲
▲
▲ ▲▲▲
▲
▲ ▲▲▲
▲
▲ ▲▲▲
▲
▲ ▲▲▲
▲
▲ ▲▲▲
▲
▲▲▲
“P
1
” (connecting rod) – “P
1
” (crankshaft
web) = 6 – 2 = 4 (green)
BIG END BEARING COLOR CODE
1
blue
2
black
3
brown
4
green
5
yellow
5. Measure:
• crankshaft journal diameter
a
Out of specification
→
Replace the crank-
shaft.
NOTE:
Measure the diameter of each crankshaft jour-
nal at two places.
Crankshaft journal diameter
49.968 ~ 49.980 mm
(1.967 ~ 1.968 in)
