Piston Pins And Connecting Rods Inspection - Suzuki Liana RH418 Supplementary Service Manual

1D-50 Engine Mechanical:
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
0.20 – 0.35 mm
Top ring
(0.0079 – 0.0137 in.)
0.30 – 0.50 mm
2nd ring
(0.0119 – 0.0196 in.)
0.20 – 0.50 mm
Oil ring
(0.0079 – 0.0196 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.
Limit
0.7 mm (0.0276 in.)
1.0 mm (0.0394 in.)
1.5 mm (0.0591 in.)
I3RH0A140011-01
S3RH0B1406033
Piston pin clearance in small end
Connecting rod small end: 0.003 – 0.014 mm
(0.00012 – 0.00055 in.)
Piston: 0.006 – 0.017 mm (0.00024 – 0.00066 in.)
Small-end bore
20.003 – 20.011 mm (0.7876 – 0.7878 in.)
Piston pin diameter
19.997 – 20.000 mm (0.7873 – 0.7874 in.)
Piston bore
20.006 – 20.014 mm (0.7877 – 0.7879 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 (0.0099 – 0.0157 in.)
Limit: 0.55 mm (0.0217 in.)
I3RH0A140016-01
I2RH0B140148-01