C 2500 Truck 2WD V8-350 5.7L (1988)
Intake Manifold: Service and Repair
Fig. 4 Intake Manifold Bolt Tightening Sequence
1.
Disconnect battery ground cable, then drain cooling system.
2.
Remove air cleaner.
3.
Remove heater and radiator hoses, then the rear alternator bracket.
4.
Disconnect all vacuum hoses and electrical connectors from TBI unit and EGR valve.
5.
Disconnect accelerator, cruise control and TV cables, if equipped.
6.
Remove spark plug wires and distributor, if necessary.
7.
Disconnect fuel lines from TBI unit.
8.
Remove air conditioning compressor rear bracket.
9.
Remove emission control sensors and bracket.
10.
Remove fuel line bracket from rear of manifold, then place fuel lines aside. Remove bracket from rear of belt idler.
11.
Remove TBI unit, if necessary.
12.
Remove intake manifold attaching bolts, then the intake manifold.
13.
Reverse procedure to install, using new gaskets and seals. Coat front and rear ridges of cylinder case with a 3/16 inch bead of RTV sealant. Extend
bead 1/2 inch up each cylinder head to retain side gaskets, then seal around all water passages. Tighten manifold bolts to specification in sequence
shown in Fig. 4.
