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lb in). 2. Tighten the accelerator control cable bracket nuts to 12 N.m (106 lb in). 3. Tighten the accelerator control cable bracket stud to the throttle body to 12 N.m (106 lb in). EXHAUST MANIFOLD CLEANING AND INSPECTION Fig. 600: Exhaust Manifold Inspection Areas
2008 Chevrolet Silverado 1500 2008 ENGINE Engine Mechanical - 4.3L - Sierra & Silverado
1. Clean the exhaust manifolds in cleaning solvent. 2. Dry the components with compressed air. 3. Inspect the exhaust manifolds for the following: Damage to the gasket sealing surfaces (1) Damage to the threaded holes (2) Restrictions within exhaust passages Broken or damaged exhaust manifold heat shields (3), if applicable Broken or damaged exhaust manifold Fig. 601: Measuring Exhaust Manifold Flanges Alignment 4. Measure the alignment or surface flatness of the exhaust manifold flanges using a straight CAUTION: Refer to Safety Glasses Caution .
2008 Chevrolet Silverado 1500 2008 ENGINE Engine Mechanical - 4.3L - Sierra & Silverado
edge and a feeler gage. Refer to Engine Mechanical Specifications. If the surface flatness is not within the specifications, the exhaust manifold is warped and WATER PUMP CLEANING AND INSPECTION Fig. 602: Water Pump Inspection Areas CAUTION: Refer to SAFETY GLASSES CAUTION .
2008 Chevrolet Silverado 1500 2008 ENGINE Engine Mechanical - 4.3L - Sierra & Silverado
1. Remove the old gasket material from the water pump sealing surfaces. 2. Clean all the dirt and any debris from the water pump. 3. Inspect the water pump for the following: Leakage or damage to the housing cover or gasket (1) Excessive scratches or gouging to the gasket sealing surfaces (2) Leakage from the water pump vent hole (3) A stain around the vent hole is acceptable. If leakage occurred (dripping) with the Damaged bolt hole threads (4) Excessive side-to-side movement of the water pump shaft (5) Leakage around the water inlet pipe (6) Leakage around the heater hose pipe (7) Restrictions within the internal coolant passages THREAD REPAIR General purpose thread repair kits are available commercially.
2008 Chevrolet Silverado 1500 2008 ENGINE Engine Mechanical - 4.3L - Sierra & Silverado
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