K 1500 Truck 4WD V8-454 7.4L (1988)
Intake Manifold: Service and Repair
Fig. 5 Intake Manifold Bolt Tightening Sequence
Fig. 6 Intake Manifold Bolt Tightening Sequence
1.
Disconnect battery ground cable, then drain cooling system.
2.
Remove air cleaner.
3.
Disconnect upper radiator and heater hoses at manifold and bypass hose at water pump.
4.
Disconnect all electrical connectors and vacuum lines from TBI unit. Disconnect fuel lines from TBI unit.
5.
Remove distributor.
6.
Remove air conditioning compressor and front bracket, then position aside.
7.
Remove alternator right rear bracket.
8.
Remove rear air conditioning compressor bracket, if equipped.
9.
Remove emission sensors and bracket.
10.
Remove intake manifold attaching bolts, then the intake manifold.
11.
Reverse procedure to install, using new gaskets and seals. Tighten manifold bolts to specification in sequence shown in Figs. 5 and 6.
