Section 05 ENGINE (4-TEC)
Subsection 08 (ENGINE BLOCK)
1
R610motr136A
A
1. Measuring perpendicularly (90°)topistonpinaxis
A. 18 mm (.709 in)
The measured dimension should be as described
in the subsequent table. If not, replace piston.
PISTON MEASUREMENT mm (in)
NEW NOMINAL
99.951 to 99.969
(3.935 to 3.936)
SERVICE LIMIT
99.80 (3.929)
Piston/Cylinder Clearance
Adjust and lock a micrometer to the piston dimen-
sion.
F00B08A
1
1. Micrometer set to the piston dimension
With the micrometer set to the dimension, adjust
a cylinder bore gauge to the micrometer dimen-
sion and set the indicator to 0 (zero).
F00B09A
1
2
1. Use the micrometer to set the cylinder bore gauge
2. Dial bore gauge
F00B0AA
1
TYPICAL
1. Indicator set to 0 (zero)
Position the dial bore gauge 62 mm (2.44 in) above
cylinder base, measuring perpendicularly (90°)to
piston pin axis.
Read the measurement on the cylinder bore
gauge. The result is the exact piston/cylinder wall
clearance.
PISTON/CYLINDER CLEARANCE mm (in)
NEW NOMINAL
0.024 to 0.056
(.0009 to.0022)
SERVICE LIMIT
0.090 (.004)
NOTE: Make sure used piston is not worn. See
PISTON MEASUREMENT above.
smr2004-Complete Line Up 291
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