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LP Engine G430(3.0L) Base Engine Service Procedure
Cylinder Block Clean and Inspect
1. Clean the following areas:
• The engine block in solvent, removing all sludge, dirt
or debris
CAUTION: Wear safety glasses in order to avoid eye
damage.
• Dry the block with compressed air.
• The gasket surfaces.
• The coolant passages.
• The oil passages.
• The main bearing caps.
2. Inspect the following areas:
• The cylinder walls for excessive scratches,
gouging or ring ridge.
• The coolant jackets for cracks.
• The valve lifter bores for excessive scoring or
wear.
• The crankshaft bearing webs for cracks.
• The gasket sealing surfaces for excessive
scratches or gouging.
• The oil passages for restrictions.
• All threaded bolt holes for thread damage.
Cylinder Bore Measurements
Tools Required
• J 8087 Cylinder Bore Gauge
1. Use the J 8087 in order to check cylinder bore taper
and our-of-round as follows:
(1) Set the gauge so that the thrust pin must be
forced in about 1/4 in to enter the gauge in the
cylinder bore.
(2) Center the gauge in the cylinder and turn the
dial to “0”.
(3) Work the gauge up and down to determine the
taper.
(4) Turn the gauge to different point around the
cylinder to determine the out-of-round condition.
Refer to Engine Mechanical Specifications.
VE060-3L
VE059-3L
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