Service manual

9. Measure the cylinder bores for taper and
out-of-round.
9.1. Depress the plunger on the J 8087 7mm
(0.275 in) or until the
J 8087 enters the
cylinder bore.
9.2. Center the J 8087 in the cylinder bore and
turn the indicator dial to 0.
9.3. Move the J 8087 up and down the cylinder
bore to determine the taper. Refer to
Engine Mechanical Specifications (5.0 L) or
Engine Mechanical Specifications (5.7 L) .
9.4. Turn the
J 8087 to different points around
the cylinder bore to determine the
out-of-round condition. Refer to
Engine
Mechanical Specifications (5.0 L)
or Engine
Mechanical Specifications (5.7 L)
.
Cylinder Boring and Honing
SIE-ID = 784235
Honing Procedure
Caution: Refer to Safety Glasses Caution in
Cautions and Notices.
1. When honing the cylinder bores, follow the
manufacturer’s recommendations for equipment
use, cleaning, and lubrication.
• Use only clean sharp stones of the proper
grade for the amount of material to be
removed.
• Dull, dirty stones cut unevenly and generate
excessive heat.
• DO NOT hone to a final grade with a coarse or
medium-grade stone.
• Leave sufficient metal so that all the stone
marks will be removed with the fine grade
stones.
• Perform the final honing with a fine-grade
stone and hone the cylinder bore in a
cross hatch pattern at 45–65 degrees to obtain
the proper clearance.
2. During the honing operation, thoroughly check the
cylinder bore.
• Repeatedly check the cylinder bore fit with the
selected piston.
• All measurements of the piston or cylinder
bore should be made with the components
at normal room temperature.
3. When honing to eliminate taper in the cylinder
bore, use full strokes the complete length of the
cylinder bore.
Repeatedly check the measurement at the top,
the middle, and the bottom of the cylinder bore.
• The finish marks should be clean but
not sharp.
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186747
6-44 Engine Mechanical - 5.0L and 5.7L Engine
2002 - Unit Repair (May 25, 2001)