Cylinder Block - Inspection (Cont'd)

EM-62prose procedure

Inspection (Cont'd)

Connecting rod bearing grade selection

8
If bearing, crankshaft or connecting rod is replaced with a new one, select connecting rod bearing according to the following table.
Connecting rod bearing grade number: Grade numbers are punched in either Arabic or Roman numerals.
SEM437C

Connecting rod bearing grade color

Crank pin grade color	Connecting rod bearing grade color
0	—
1	Brown
2	Green

Connecting rod bearing grade color—

Connecting rod bearing grade colorBrown

Connecting rod bearing grade colorGreen

Method B (Using plastigage)

CAUTION

Do not turn crankshaft or connecting rod while plastigage is being inserted. When bearing clearance exceeds the specified limit, ensure that the proper bearing has been installed. Then if excessive bearing clearance exists, use a thicker main bearing or undersized bearing so that the specified bearing clearance is obtained.

Connecting Rod Bushing Clearance (Small end)

1
Measure inner diameter "C" of bushing.
SEM151B
2
Measure outer diameter "Dp" of piston pin.
SEM903A
3
Calculate connecting rod bushing clearance. If it exceeds the limit, replace connecting rod assembly or connecting rod bushing and/or piston pin.

Specification	Value
Connecting rod bushing clearance = C - Dp, Standard(0.0002 - 0.0007 in)	0.005 - 0.017mm
Limit(0.0009 in)	0.023mm

Connecting rod bushing clearance = C - Dp, Standard(0.0002 - 0.0007 in)

0.005 - 0.017mm

Limit(0.0009 in)

0.023mm

Replacement of Connecting Rod Bushing (Small end)

1
Drive in small end bushing until it is flush with end surface of rod.
Be sure to align the oil holes.
SEM062A
2
After driving in small end bushing, ream the bushing so that clearance between connecting rod busing and piston pin achieves specified value.

Specification	Value
Clearance between connecting rod bushing and piston pin(0.0002 - 0.0007 in)	0.005 - 0.017mm

Clearance between connecting rod bushing and piston pin(0.0002 - 0.0007 in)