Crank Pin And Connecting Rod Bearings Inspection - Suzuki Liana RH418 Supplementary Service Manual

• Connecting rod alignment:
Mount connecting rod on aligner to check it for bow
and twist. If limit is exceeded, replace it.
Connecting rod alignment
Limit on bow: 0.05 mm (0.0020 in.)
Limit on twist: 0.10 mm (0.0039 in.)
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
Undersize 0.25 mm (0.0098 in.)
Out-of-round
"A" – "B"
Taper
"a" – "b"
Out-of-round and taper limits
0.01 mm (0.0004 in.)
I4RH01140053-01
S3RH0B1406034
Crank pin diameter
41.982 – 42.000 mm
(1.6529 – 1.6535 in.)
41.732 – 41.750 mm
(1.6430 – 1.6437 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 (1.26 in.)
"b": 40 mm (1.57 in.)
Connecting rod bolt diameter difference
Limit ("A" – "B"): 0.1 mm (0.004 in.)
Engine Mechanical: 1D-51
I2RH0B140120-01
I2RH0B140119-01