Exhaust Manifold Installation; Egr Valve Installation - GMC 1990 Light Truck Repair Manual

6A2-26 2.8 LITER V-6
8 4
A — Apply RTV Sealant
B — Forward
Figure 42—Intake Manifold Installation
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F-05524
A. Apply Sealer H e re \
1. Nuts
2. Reinforcem ents
3. Rocker Arm Cover
Figure 43—Rocker Arm Cover Installation
EXHAUST MANIFOLD
INSTALLATION
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Clean
Mating surfaces of the manifold and cylinder head.
Install or Connect (Figure 44)
1. Manifold.
2. Bolts and studs.
Tighten
Bolts to 34 N m (25 ft. lbs.).

EGR VALVE INSTALLATION

Install or Connect (Figure 6)
1. Gasket (82).
2. EGR valve (81).
3. Bolts (80).
Q Tighten
• Bolts to 25 N-m (18 ft. lbs.).
4. Gasket
5. Studs B-09303