Chevrolet Light Duty Truck 1973 Service Manual page 380

ENGINE 6-44
General Description........................................................... 6-44
Component Replacement and Adjustment................. 6-44
Engine Assembly................................................................ 6-44
Removal.............................................................................. 6-44
Installation......................................................................... 6-47
Intake M anifold................................................................. 6-49
Removal.............................................................................. 6-49
Installation......................................................................... 6-50
Exhaust Manifold............................................................... 6-50
Removal.............................................................................. 6-50
Installation......................................................................... 6-50
Rocker Arm Cover........................................................... 6-50
Removal............................................................ ................. 6-50
Installation......................................................................... 6-51
Valve Mechanism.............................................................. 6-51
Removal.............................................................................. 6-51
Installation and Adjustment........................................ 6-51
Valve Lifters....................................................................... 6-51
Locating Noisy Lifters................................................. 6-51
Removal.............................................................................. 6-52
Installation......................................................................... 6-52
Valve Stem Oil Seal and/or Valve Spring.............. 6-52
Replacement...................................................................... 6-52
Cylinder Head Assembly................................................ 6-52
Removal.............................................................................. 6-52
Installation......................................................................... 6-53
Oil P an ................................................................................. 6-53
The V8 engines covered in this section are the 307, 350,
and 454 cu. in. engines used in 10-30 Series truck
vehicles. In order to avoid repetition and to identify the
engines involved in a particular procedure, the 307 and
350 cu. in. V8 engines are identified as "Small V8's" .
The 454 cu. in. engine is identified as "Mark IV V8" .
This section covers the removal and installation of
engine assemblies; the removal, installation and
adjustment of some sub-assemblies and replacement of
some components. For service to all components and
C O M P O N E N T REPLACEMENT A N D ADJUSTMENT
Engine Assembly
Removal
C, K and P Series
1. Disconnect battery cables and drain cooling system.
2. Remove the air cleaner.
ENGINE MECHANICAL
V-8 ENGINES
INDEX
Oil Pump.............................................................................. 6-54
Oil Seal (Rear M ain)...................................................... 6-54
Torsional Damper............................................................. 6-55
GENERAL DESCRIPTION
sub-assemblies (after removal) and removal of some
sub-assemblies, refer to Section 6 of the Overhaul
Manual.
Because of the interchangeability and similarity of many
engines, engine sub-assemblies and parts regardless of
which truck vehicle they are used in, typical illustrations
and procedures are used (except where specific
illustrations or procedures are necessary to clarify the
operation). Although illustrations showing bench opera­
tions are used, most single operations, when not part of a
general overhaul, should be performed (if practical) with
the engine in the vehicle.
3. Perform the following preliminary operations:
Removal.............................................................................. 6-53
Installation......................................................................... 6-53
Removal.............................................................................. 6-54
Installation......................................................................... 6-54
Replacement...................................................................... 6-54
Removal.............................................................................. 6-55
Installation......................................................................... 6-55
Crankcase Front Cover................................................... 6-55
Removal.............................................................................. 6-55
Installation......................................................................... 6-56
Oil Seal (Front Cover).................................................... 6-57
Replacement...................................................................... 6-57
Timing Chain and/or Sprockets.................................. 6-57
Replacement...................................................................... 6-57
Camshaft.............................................................................. 6-58
Measuring Lobe L ift..................................................... 6-58
Removal.............................................................................. 6-59
Installation......................................................................... 6-59
Flywheel................................................................................ 6-60
Removal.............................................................................. 6-60
Installation......................................................................... 6-60
Engine M ounts................................................................... 6-60
Checking Engine Mounts.............................................. 6-60
Replacement (Front)...................................................... 6-60
Replacement (Rear)........................................................ 6-61
• Remove the hood as outlined in Section 11.
Remove the radiator and shroud as outlined in
•
Section 13.
LIGHT DUTY TRUCK SERVICE MANUAL