Piston Pins And Connecting Rods Inspection - Suzuki Liana RH413 Service Manual

Piston Rings
To measure end gap, insert piston ring (1) into cylinder
bore and then measure the gap by using thickness
gauge (2).
If measured gap is out of specification, replace ring.
NOTE
Decarbonize and clean top of cylinder bore
before inserting piston ring.
Piston ring end gap
Item Standard
Top ring 0.20 – 0.35 mm
(0.0079 – 0.0138 in.)
2nd ring 0.30 – 0.45 mm
(0.0118 – 0.0177 in.)
Oil ring 0.20 – 0.70 mm
(0.0079 – 0.0276 in.)
"a": 120 mm (4.72 in.)

Piston Pins and Connecting Rods Inspection

Piston Pin
• Check piston pin, connecting rod small end bore and
piston bore for wear or damage, paying particular
attention to condition of small end bore bush. If pin,
connecting rod small end bore or piston bore is badly
worn or damaged, replace pin, connecting rod and/or
piston.
• Piston pin clearance:
Check piston pin clearance in small end and piston.
Replace connecting rod and/or piston if its small end
is badly worn or damaged or if measured clearance
exceeds limit.
Piston pin clearance in small end
Connecting rod small end: 0.003 – 0.014 mm
(0.0001 – 0.0006 in.)
Piston: 0.006 – 0.017 mm (0.00024 – 0.00067 in.)
Small-end bore
20.003 – 20.011 mm (0.7875 – 0.7878 in.)
Limit
0.7 mm (0.0276 in.)
1.0 mm (0.0394 in.)
1.5 mm (0.0591 in.)
I3RH0A140011-01
S3RH0A1406046
Piston pin diameter
19.997 – 20.000 mm (0.7873 – 0.7874 in.)
Piston bore
20.006 – 20.014 mm (0.7876 – 0.7880 in.)
Connecting Rod
• Big-end side clearance:
Check big-end of connecting rod for side clearance,
with rod fitted and connected to its crank pin in the
normal manner. If measured clearance is found to
exceed its limit, replace connecting rod.
Big-end side clearance
Standard: 0.25 – 0.40 mm (0.0098 – 0.0157 in.)
Limit: 0.55 mm (0.0217 in.)
• 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.)
Engine Mechanical: 1D-40
I3RH0A140016-01
I2RH0B140148-01