GMC 1989 Light Duty Truck Repair Manual page 491

S U B J E C T
Description.................................................................................................................................................................................... 6 A 5 - 2
Engine Id e n tific atio n ............................................................................................................................................................. 6 A 5 - 2
Disassem bly..................................................................................................................................................................................6 A 5 - 6
Tools and Shop Equipm ent..................................................................................................................................................6 A 5 - 6
Accessory R em oval............................................................................................................................................................... 6 A 5 - 6
C le a n in g ....................................................................................................................................................................................6 A 5 - 6
Draining the E ngine............................................................................................................................................................... 6 A 5 - 6
Exhaust Manifold R e m o v a l..................................................................................................................................................6 A 5 - 6
Water Pump R e m o v a l...........................................................................................................................................................6 A 5 - 6
Intake Manifold R em oval...................................................................................................................................................... 6 A 5 - 6
Rocker Arm Cover R e m o v a l................................................................................................................................................6 A 5 - 7
Valve Train Component R em oval...................................................................................................................................... 6 A 5 - 7
Cylinder Head R em oval............................................................................................................. ...........................................6 A 5 - 8
Torsional Damper R em oval..................................................................................................................................................6 A 5 - 8
Oil Pan Removal...................................................................................................................................................................... 6 A 5 - 8
Oil Pump R em o val..................................................................................................................................................................6 A 5 - 8
Front Cover R em oval............................................................................................................................................................. 6 A 5 - 8
Timing Chain and Camshaft Sprocket R em o v al........................................................................................................... 6 A 5 - 9
Camshaft R e m o v a l.................................................................................................................................................................6 A 5 - 9
Piston and Connecting Rod R e m o v a l............................................................................................................................. 6 A 5 - 9
Flywheel R e m o v a l..................................................................................................................................................................6A 5 -1 3
Rear Crankshaft Oil Seal Retainer Removal (5.0 L and 5.7 L E n g in e s )................................................................ 6A 5 -1 3
Crankshaft Rem oval............................................................................................................................................................... 6A 5 -1 3
Cleaning, Inspection, and R epair...........................................................................................................................................6A 5 -1 4
B lo ck ...........................................................................................................................................................................................6 A 5 -1 4
Piston and Connecting Rod A ssem blies.........................................................................................................................6A 5 -1 5
Intake and Exhaust Manifold............................................................................................................................................... 6A 5 -1 6
C am shaft....................................................................................................................................................................................6A 5 -1 6
Camshaft Bearings..................................................................................................................................................................6 A 5 -1 7
Timing Chain and Sprockets............................................................................................................................................... 6 A 5 -1 7
Front Cover............................................................................................................................................................................... 6 A 5 -1 7
W ater P u m p .............................................................................................................................................................................6 A 5 -1 7
Oil Pan and Rocker Arm Covers.........................................................................................................................................6 A 5 -1 8
Oil P u m p ............................................................. ......................................................................................................................6 A 5-19
Valve Train Com ponents...................................................................................................................................................... 6 A 5-19
Cylinder H ead...........................................................................................................................................................................6 A 5-20
Thermostat and Water O u tle t............................................................................................................................................. 6A 5-24
Torsional Damper....................................................................................................................................................................6A 5-24
Crankshaft and Bearings...................................................................................................................................................... 6A 5-24
Oil Filter Bypass V a lv e ........................................................................................................................................................ 6A 5-25
Rear Crankshaft Oil Seal Retainer (5.0 L and 5.7 L E n g in e s).................................................................................. 6A 5-26
Assembly of E n g in e ................................................................................................................................................................. 6 A 5-26
Prior to A s s e m b ly ........... ..................................................................................................................................................... 6 A 5-26
Rear Crankshaft Oil Seal Installation (7.4 L E n g in e s )................................................................................................6A 5-26
Crankshaft and Main Bearing In stallatio n ...................................................................................................................... 6A 5 -2 7
SECTION 6A5
V8 ENGINE
5.0 LITER (305 Cu. In.)
5.7 LITER (350 Cu. In.)
7.4 LITER (454 Cu. In.)
CONTENTS
6A5-1
P A G E