Chevrolet 1991 Light Duty Truck Repair Manual page 398

6A2-6 2-8L V6 ENGINE
Figure 5— Air Injection Tube
Figure 6— EGR Valve
75. Nut
76. Air Injection Pipe
B9406
A. Front
80. Bolt
82 81. EGR Valve
82. Gasket
B9442
Figure 7—Exhaust Manifolds
AIR INJECTION TUBE REMOVAL
Remove or Disconnect (Figure 5)
1. Nut (75).
2. Air injection tube from the manifold.
EGR VALVE REMOVAL
Remove or Disconnect (Figure 6)
1. Bolts (80).
2. EGR valve (81).
3. Gasket (82).
EXHAUST MANIFOLD REMOVAL
|<" »| Remove or Disconnect (Figure 7)
1. Oil dipstick tube.
2. Bolts or studs.
3. Exhaust manifold.
ROCKER ARM COVER
REMOVAL
Remove or Disconnect (Figure 8)
E
1. Rocker arm cover nuts (1) and reinforcements (2).
2. Rocker arm cover (3) and gasket
• If the cover sticks to the head, bump the end of
the cover. If the cover still does not come loose,
carefully pry until loose. DO NOT DISTORT
THE SEALING FLANGE.
INTAKE MANIFOLD REMOVAL
E 3
Remove or Disconnect
1. Intake manifold bolts.
2. Intake manifold.
• Lift the intake manifold straight up.
(4).