454 CID (7.4L) / 502 CID (8.2L) SERVICE MANUAL NUMBER 23
Page 3A-68
90-861326--1 MARCH 1999
Disassembly
Disassemble piston from connecting rod using piston pin remover as shown. Follow instruc-
tions supplied with kit.
72365
a
b
d
c
e
a-Piston Pin Remover and Installer Kit (J-24086-C)
b-Arched Base
c-Piston
d-Connecting Rod
e-Rod Support
Cleaning and Inspection
CONNECTING RODS
1. Wash connecting rods in cleaning solvent and dry with compressed air.
2. Check for twisted and bent rods and inspect for nicks and cracks. Replace damaged
connecting rods.
PISTONS
NOTE: Cylinder bore and taper must be within specifications before pistons can be consid-
ered for re-use.
1. Clean varnish from piston skirts with a cleaning solvent. DO NOT WIRE BRUSH ANY
PART OF PISTON. Clean ring grooves with a groove cleaner and make sure oil ring
holes are clean.
2. Inspect piston for cracked ring lands, skirts and pin bosses, wavy worn ring lands,
scuffed or damaged skirts, and eroded areas at top of piston. Replace pistons which are
damaged or show signs of excessive wear.
3. Inspect grooves for nicks and burrs that might cause rings to hang up.
4. Measure piston skirt and check clearance as outlined under “Piston Selection.”
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