Suzuki Liana RH413, Service Manual

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1D-41 Engine Mechanical:
Crank Pin and Connecting Rod Bearings
Inspection
S3RH0A1406047
Crank Pin
• Inspect crank pin for uneven wear or damage.
Measure crank pin for out-of-round or taper with a
micrometer. If crank pin is damaged, or out-of round
or taper is out of limit, replace crankshaft or regrind
crank pin to undersize and use undersize bearing.
Connecting rod bearing and crank pin
Out-of-round
“A” – “B”
Taper
“a” – “b”
Out-of-round and taper limits
0.01 mm (0.0004 in.)
Connecting Rod Bolt
• Connecting rod bolt deformation (Plastic deformation
tightening bolt):
Measure each thread diameter of connecting rod (1)
bolt (2) at “A” and “B” by using a micrometer (3).
Calculate difference in diameters (“A” – “B”). If it is
exceeds limit, replace connected rod.
Connecting rod bolt measurement points
“a”: 32 mm (1.25 in.)
“b”: 40 mm (1.57 in.)
Connecting rod bolt diameter difference
Limit (“A” – “B”): 0.1 mm (0.004 in.)
Connecting Rod Bearing General Information
Service connecting rod bearings are available in
standard size and 0.25 mm (0.0098 in.) undersize
bearing, and standard size bearing has 5 kinds of
bearings differing in tolerance.
For identification of undersize bearing, it is painted red at
the position as indicated in the figure, undersize bearing
thickness is 1.605 – 1.615 mm (0.0632 – 0.0635 in.) at
the center of it.
Connecting rod bearing
size
Crank pin diameter
Standard 41.982 – 42.000 mm
(1.6528 – 1.6535 in.)
I4RH01140053-01
I2RH0B140120-01
1. Red paint
I2RH0B140119-01
I2RH01140164-01