Piston Pins And Connecting Rods Inspection - Suzuki GRAND VITARA 2005 Service Manual

Piston diameter
As indicated in the figure, piston diameter should be
measured at a position "a" from piston skirt end in the
direction perpendicular to piston pin.
Piston diameter specification
79.8585 – 79.8735 mm (3.144036 – 3.144625 in.)
"a": 39.0 mm (1.535 in.)
Piston Ring
Piston ring end gap
To measure end gap, insert piston ring (2) into cylinder
bore and then measure the gap by using thickness
gauge (1).
If measured gap out of specification, replace ring.
NOTE
Decarbonize and clean top of cylinder bore
before inserting piston ring.
Piston ring end gap
Top ring: 0.20 – 0.35 mm (0.0079 – 0.0137 in.)
2nd ring: 0.70 – 0.90 mm (0.0276 – 0.0354 in.)
Oil ring: 0.25 – 0.50 mm (0.0099 – 0.0196 in.)
Piston and Related Parts Specifications (for
Reference)
Piston ring
Piston ring
thickness

Piston Pins and Connecting Rods Inspection

I2RH01140157-01
Piston Pin
Visual inspection
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 connecting rod small end
0.013 – 0.030 mm (0.00052 – 0.00118 in.)
Small-end bore
28.013 – 28.025 mm (1.10288 – 1.10334 in.)
Piston pin dia.
27.995 – 28.000 mm (1.10217 – 1.10236 in.)
I5JB0B140136-01
Engine Mechanical:
Item Specification
2.47 – 2.49 mm
1st ring
(0.0973 – 0.0980 in.)
1.97 – 1.99 mm
2nd ring
(0.0776 – 0.0783 in.)
2.97 – 2.99 mm
Oil ring
(0.1170 – 0.1177 in.)
1D-52
S5JB0B1406034
I4RS0A140023-01