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LP Engine G430 (3.0L)
Base Engine Service Procedure
4. Measure the bore gauge with a micrometer and
record the reading.
5. With a micrometer or caliper at a right angle to the
piston, measure the piston 11 mm (0.433 in) from
the bottom of the skirt.
6. Subtract the piston diameter from the cylinder bore
diameter in order to determine piston-to-bore clearance.
7. For proper piston-to-bore clearance, Refer to
Engine Mechanical Specifications.
8. If the proper clearance cannot be obtained, select
another piston and measure for the clearances. If
the proper fit cannot be obtained, the cylinder bore
may require boring or honing. Refer to Cylinder
Boring and Honing.
9. When the piston-to-cylinder bore clearance is within
specifications, permanently mark the top of the
piston for installation to the proper cylinder.
Piston and Connecting Rod
Assemble
Tools Required
• J 24086-C Piston Pin Removal Set
IMPORTANT: When assembling the piston and
connecting rod, the flange or the heavy side on the
connecting rod must face toward the front of the piston
(stamped arrow in top of the piston head).
1. Install the piston pin and connecting rod assembly.
(1) Lubricate the piston pin holes in both the piston
and the connecting rod assembly.
(2) Press the piston pin into the piston and
connecting rod assembly using the J 24086-C.
(3) Inspect for freedom of movement of the piston
on the piston pin.
VE064-3L
VE073-3L
VE072-3L
