Crank Pin And Connecting Rod Bearings Inspection - Suzuki Liana RH413 Service Manual

1D-41 Engine Mechanical:
Crank Pin and Connecting Rod Bearings
Inspection
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
Connecting rod bearing
size
Standard
Out-of-round
"A" – "B"
Taper
"a" – "b"
Out-of-round and taper limits
0.01 mm (0.0004 in.)
I4RH01140053-01
S3RH0A1406047
Crank pin diameter
41.982 – 42.000 mm
(1.6528 – 1.6535 in.)
I2RH0B140120-01
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.
1. Red paint
I2RH0B140119-01
I2RH01140164-01