Piston And Connecting Rod Assembly; Intake And Exhaust Manifolds - GMC T Series 1994 Repair Manual

64. PLUG, OIL PRESSURE CROSSOVER HOLE
65. PLUG, OIL PRESSURE CROSSOVER HOLE
111. PLUG, OIL GALLERY HOLE
OIL GALLERY HOLE
113. PLUG,
115. PLUG, ENGINE BLOCK COOLANT DRAIN HOLE
147. PLUG, OIL GALLERY HOLE
OIL GALLERY HOLE
157. PLUG,
Measure
m
• Cylinder bore taper and out-of-round. Refer to
SECTION 6A.
Cylinder Bore Reconditioning
Refer to SECTION 6A.
Figure 23— Engine Block Coolant Drain and Oil Gallery Plugs
*
FRT
PISTON AND CONNECTING
ROD ASSEMBLY
Notice: The connecting rod and cap need to
be stored together as mating parts, so they
may be reassembled in the sam e position
from which they were removed.
Refer to SECTION 6A and perform the following:
• Disassembly.
• Cleaning.
• Inspection.
• Measuring.
— Piston pin diameter and clearance.
— Piston to bore clearance and fit of pistons.
— Ring end gap and ring clearances.
— Ring fit.
INTAKE AND EXHAUST
MANIFOLDS
X £ j i
Clean
• Old pieces of gasket from the gasket surfaces.
• Excessive carbon buildup in the exhaust passages
of the intake manifold.
• Scale and deposits from the coolant passages of
the intake manifold.
• EGR passage of excessive carbon deposits.
113
111
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