Dodge ram truck 3500 1996 Service Manual page 1197

C L E A N I N G A N D
INSPECTION
( C o n t i n u e d )
5.9L (DIESEL) ENGINE 9 - 207
MIN. 102.0 mm (4.0157 inch)
MAX. 102.1 16 mm (4.0203 inch)
Out-of-Round 0.038 mm (0.0015 inch)
Taper 0.076 mm (0.003 inch)
Oversize pistons and rings are
available for bored cylinder blocks.
J9209-167
Fig. 132 Cylinder Bore Diameter
CAMSHAFT BORE DIAMETER
MAX. 54.133 m m (2.1312 inch)
J9109-78
Fig. 133 Camshaft Bores
Inspect the tappet bores for scoring or excessive
wear (Fig. 134). I f out of limits, replace the cylinder
block.
BORE DIAMETER
MAX. 16.055 m m (0.632 inch)
J9109-79
Fig. 134 Tappet Bore Diameter
PISTON AND CONNECTING ROD ASSEMBLY
CLEANING
CAUTION: DO NOT use bead blast to clean the
pistons. DO NOT clean the pistons and rods in an
acid tank.
Soak the pistons i n cold parts cleaner. Soaking the
pistons overnight will usually loosen the carbon
deposits.
Wash the pistons and rods in a strong solution of
laundry detergent and hot water.
Clean the remaining deposits from the ring grooves
with the square end of a broken ring. DO NOT use a
ring groove cleaner and be sure not to scratch the
ring sealing surface i n the piston groove.
Wash the pistons again in a detergent solution or
solvent.
Rinse the pistons. Use compressed air to dry.
INSPECTION
Inspect the rod journals for deep scratches, indica­
tion of overheating and other damage.
Inspect the pistons for damage and excessive wear.
Check top of the piston, ring grooves, skirt and pin
bore.