Camshaft Removal; Piston And Connecting Rod Removal; Piston And Connecting Rod Removal; Timing Chain And Camshaft Sprocket Removal - Chevrolet 1991 Light Duty Truck Repair Manual

70. Oil Pump
71. Oil Pan
72. Bolt
73. Nut
74. Gasket
75. Reinforcement
Figure 17— Oil Pan (5.0L and 5.7L Engines)
TIMING CHAIN AND CAMSHAFT
SPROCKET REMOVAL
E 3
Remove or Disconnect (Figure 21)
• Timing chain free play. If the chain can be moved
back and forth in excess of 16 mm (5/8-inch),
make a note that the timing chain should be
replaced during assembly (Figure 21).
1. Bolts (100).
2. Camshaft sprocket (101) and timing chain (102)
together.

CAMSHAFT REMOVAL

|» + | Remove or Disconnect (Figure 22)
• Camshaft.
• Install three 5/16-18 bolts 100-125 mm (4-5
inches) long into the camshaft tapped holes.
Use these bolts to handle the camshaft.
• Pull the camshaft from the block.
70. Oil Pump
76. Nut
77. Bolt
79. Oil Pan Baffle (H.D. 5.7L)
• Use care to prevent damage to the camshaft
and bearings.
PISTON AND CONNECTING
F9364
B Remove or Disconnect (Figures 23 and 24)
Tool Required:
J 5239 Connecting Rod Guide Set
1. Ridge (or deposits) at the top of the cylinder as
follows:
• Turn the crankshaft until one piston is at the
bottom of its stroke. Place a soft cloth on top of
the piston.
• Using the manufacturer's directions, install a
ridge reamer into the top of the cylinder (figure
23). Perform the cutting operation.
• After the ridge and/or deposits are removed,
remove the ridge reamer. Turn the crankshaft
until the piston is at the top of its stroke.
Remove the cloth and cuttings.
• Repeat this procedure for each piston.
2. Connecting rod caps as follows:
• Make note of the arrangement of the connect­
ing rod markings, to insure that they will be
returned to their proper position during assem­
bly. Mark the connecting rods with a scratch
awl if necessary.
• Remove the connecting rod nuts.
• To avoid mismatching the connecting rods and
connecting rod cap, remove only one connect-
V8 ENGINES 6AS-11
Figure 18—Oil Pan Baffle
ROD REMOVAL
F9365