Engine Mechanical: For J20 Engine 1D-117
d. From number stamped on connecting rod and its
cap and alphabet stamped on crank web No. 3
cylinder, determine new standard bearing to be
installed to connecting rod big-end inside, by
referring to the table.
For example, if number stamped on connecting
rod and its cap is “1” and alphabet stamped on
crank web No. 3 cylinder is “B”, install a new
standard bearing painted in “Black” to its
connecting rod big-end inside.
Specifications of new standard connecting rod
bearing size
e. Check bearing clearance with newly selected
standard bearing referring to “Crank pin and
connecting rod bearings: For J20 Engine”.
If clearance still exceeds its limit, use next thicker
bearing and recheck clearance.
•
Connecting rod bolt
Measure each thread diameter of connecting rod bolts
(1) at “A” on 28.5 mm (1.12 in.) from bolt mounting
surface and “B” on 42.0 mm (1.65 in.) from bolt
mounting surface by using a micrometer (2).
Calculate difference in diameters (“A” – “B”). If it
exceeds limit, replace connecting rod.
Connecting rod bolt measurement points
“a”: 28.5 mm (1.12 in.)
“b”: 42.0 mm (1.65 in.)
Connecting rod bolt diameter difference
limit (“A” – “B”): 0.1 mm (0.004 in.)
Cleaning
Clean carbon from piston head and ring grooves, using a
suitable tool.
1. Paint
Number stamped on
connecting rod and its cap
(Connecting rod big end inside
diameter)
1
2
3
Alphabet
stamped on
crank web of
No. 3 cylinder
(Crank pin
diameter)
A
Green
Black
Colorless
B
Black
Colorless
Yellow
C Colorless
Yellow
Blue
IYSQ01141169-01
1
2
1
‘‘a’’
‘‘b’’
‘‘A’’
‘‘B’’
I4RH01140043-01
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