GMC 1989 Light Duty Truck Repair Manual page 425

SUBJECT
D escription........... * ..................................................................................................................................................................... 6 A 3 - 2
Engine Lubrication..................................................................................................................................................................6 A 3 - 2
Disassem bly..................................................................................................................................................................................6 A 3 - 5
Tools and Shop Equipm ent..................................................................................................................................................6 A 3 - 5
Accessory R em o val................................................................................................................................................................6 A 3 - 5
C le a n in g .................................................................................................................................................................................... 6 A 3 - 5
Draining The E n g in e ............................................................................................................................................................. 6 A 3 - 5
EGR Valve R em oval............................................................................................................................................................... 6 A 3 - 5
Exhaust Manifold R e m o v a l................................................................................................................................
Rocker Arm Cover R e m o v a l................................................................................................................................................6 A 3 - 6
Intake Manifold R em oval...................................................................................................................................................... 6 A 3 - 6
Valve Train Component R em oval.......................................................................................................................................6 A 3 - 6
Cylinder Head R em oval.................................................................................................................................................. ~ . .6 A 3- 7
Torsional Damper Rem oval..................................................................................................................................................6 A 3 - 7
Oil Pan Rem oval...................................................................................................................................................................... 6 A 3 - 7
Oil Pump R em o val.................................................................................................................................................................. 6 A 3 - 7
Front Cover R em oval............................................................................................................................................................. 6 A 3 - 7
Camshaft R em oval..............................
Piston and Connecting Rod R e m o v a l..............................................................................................................................6A 3 - 8
Flywheel R e m o v a l.................................................................................................................................................................. 6 A 3 - 9
Rear Crankshaft Oil Seal R em o val.................................................................................................................................... 6 A 3 - 9
Rear Crankshaft Oil Seal Retainer R e m o v a l.................................................................................................................. 6 A 3 - 9
Crankshaft Removal................................................................................................................................................................6 A 3 - 9
Main Bearing Removal (Without Removing C ra n k s h a ft)........................................................................................... 6A 3 -1 0
Cleaning, Inspection, and R epair........................................................................................................................................... 6 A 3 -1 0
B lo ck ...........................................................................................................................................................................................6A 3-10
Piston and Connecting Rod A s s e m b ly ........................................................................................................................... 6A 3-10
Intake and Exhaust Manifolds............................................................................................................................................. 6A3-11
Cam shaft.................................................................................................................................................................................... 6 A 3 -1 1
Camshaft Bearings..................................................................................................................................................................6A3-11
Timing Chain and Sprockets................................................................................................................................................6A3-11
Front Cover............................................................................................................................................................................... 6A 3-12
Water Pump ............................................................................................................................................................................. 6A 3-12
Oil Pan and Rocker Arm Covers.........................................................................................................................................6A 3-12
Oil P u m p ....................................................................................................................................................................................6A 3-12
Valve Train Com ponents...................................................................................................................................................... 6 A 3-13
Hydraulic Lifters...................................................................................................................................................................... 6A 3-13
Cylinder H ead ...........................................................................................................................................................................6 A 3-13
Thermostat and Water O u tle t............................................................................................................................................. 6 A 3-16
Crankshaft and Bearings...................................................................................................................................................... 6A 3-16
Assembly of E n g in e ..................................................................................................................................................................6 A 3 -1 7
Prior to A s s e m b ly ..................................................................................................................................................................6A 3 -1 7
Crankshaft and Main Bearing In stallatio n ...................................................................................................................... 6 A 3 -1 7
Rear Crankshaft Oil Seal Retainer In s ta lla tio n ............................................................................................................. 6A 3 -1 7
Rear Crankshaft Oil Seal Installation....................
Camshaft, Timing Chain and Sprocket In s ta lla tio n .................................................................................................... 6 A 3 -1 8
SECTION 6A3
4.3 LITER V-6
CONTENTS
................................................................................................................................6 A 3 - 7
.......................................................................................................6A 3 -1 8
6A3-1
■ j * * *
PAGE
.............. 6 A 3 - 5