CONNECTING RODS AND PISTONS
5-88
For example, if the connecting rod “P
1
” and
the crankshaft web “P
1
” numbers are “4” and
“1” respectively, then the bearing size for “P
1
”
is:
EAS26170
INSTALLING THE CONNECTING RODS AND
PISTONS
The following procedure applies to all of the con-
necting rods and pistons.
1. Install:
• Big end bearings
• Connecting rod cap
(onto the connecting rod)
IP
• Be sure to reinstall each big end bearing in its
original place.
• Align the projections “a” on the big end bear-
ings with the notches “b” in the connecting rods
and connecting rod caps.
• Make sure that the projection “c” on the con-
necting rod cap faces the same direction as the
“Y” mark “d” on the connecting rod.
2. Tighten:
• Connecting rod bolts
NOTICE
ECA2S31046
Tighten the connecting rod bolts using the
plastic-region tightening angle method. Al-
ways install new bolts.
IP
Install by carrying out the following procedures in
order to assemble in the most suitable condition.
▼▼▼▼ ▼ ▼▼▼▼▼▼▼▼▼ ▼ ▼▼▼▼ ▼ ▼▼▼▼ ▼ ▼▼▼▼ ▼▼▼
a. Replace the connecting rod bolts with new
ones.
b. Clean the connecting rod bolts.
c. After installing the big end bearing, assemble
the connecting rod and connecting rod cap
without installing them onto the crankshaft.
d. Tighten the connecting rod bolt while check-
ing that the sections shown “a” and “b” are
flush with each other by touching the surface.
IP
To install the big end bearing, care should be
taken not to install it at an angle and the position
should not be out of alignment.
e. Loosen the connecting rod bolt, remove the
connecting rod and connecting rod cap and
install these parts to the crankshaft with the
big end bearing kept in the current condition.
▲▲▲▲ ▲ ▲▲▲▲▲▲▲▲▲ ▲ ▲▲▲▲ ▲ ▲▲▲▲ ▲ ▲▲▲▲ ▲▲▲
3. Install:
• Lower oil ring rail “1”
• Oil ring expander “2”
• Upper oil ring rail “3”
• 2nd ring “4”
• Top ring “5”
P
1
(connecting rod) - P
1
(crankshaft web) =
4 - 1 = 3 (brown)
Bearing color code
1.Blue 2.Black 3.Brown 4.Green
d
c
T
R
.
.
Connecting rod bolt
30 Nm (3.0 m·kgf, 22 ft·lbf)
a. Side machined face
b. Thrusting faces
a
b
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