GMC T Series 1994 Repair Manual page 319

NOTICE: When fasteners are removed, always reinstall them at the same location from which they were
removed. If a fastener needs to be replaced, use the correct part number fastener for that application. If the
correct part number fastener is not available, a fastener of equal size and strength (or stronger) may be used.
Fasteners that are not reused, and those requiring thread locking compound will be called out. The correct
torque value must be used when installing fasteners that require it. If the above conditions are not followed,
parts or system damage could result.
General Description................................................................................................................................................6A2-2
Cylinder Block....................................................................................................................................................6A2-2
Cylinder Head..................................................................................................................................................... 6A2-2
Crankshaft and Bearings.................................................................................................................................. 6A2-2
Pistons and Connecting Rods.............................................................................................................. ........... 6A2-2
Valve Train......................................................................................................................................................... 6A2-3
Intake Manifold..................................................................................................................................................6A2-3
Exhaust Manifold...............................................................................................................................................6A2-3
Engine Lubrication................................ ............................................................................................................6A2-3
Disassembly of Engine......................................................................................................................................... 6A2-3
Tools and Shop Equipment.............................................................................................................................6A2-3
Accessory Removal........................................................................................................................................... 6A2-3
Cleaning............................................................................................................................................................... 6A2-3
Draining the Engine......................................................................................................................................... 6A2-3
Oil Fill Tube Removal..................................................................................................................................... 6A2-9
Oil Filter, Connector and By-pass Valve Removal................................................................................... 6A2-9
Intake Manifold Removal................................................................................................................................. 6A2-9
Exhaust Manifold Removal..............................................................................................................................6A2-9
Coolant Outlet, Thermostat and Adapter Removal.................................................................................... 6A2-9
Coolant Inlet Removal...................................................................................................................................... 6A2-9
Coolant Pump Removal.................................................................................................................................... 6A2-9
Crankshaft Pulley Removal..............................................................................................................................6A2-10
Crankshaft Pulley Hub Removal.....................................................................................................................6A2-10
Crankcase Front Cover Removal................................................................................................................. . 6A2-10
Crankcase Front Cover Oil Seal Removal...................................................................................................6A2-11
Timing Chain, Tensioner and Camshaft Sprocket Removal..................................................................... 6A2-12
Crankshaft Sprocket Removal..........................................................................................................................6A2-12
Valve Rocker Arm Cover Removal.............................................................................................................. 6A2-12
Rocker Arm and Pushrod Removal................................................................. ........................................ ....6A2-12
Cylinder Head Removal...................................................................................................................................6A2-13
Valve Lifter Removal....................................................................................................................................... 6A2-13
Oil Pan Removal................................................................................................................................................6A2-13
Oil Pump Removal........................................................................................................................................... 6A2-13
Oil Pump Drive Removal................................................................................................................................ 6A2-14
Piston and Connecting Rod Removal............................................................................................................6A2-14
Flywheel Removal..............................................................................................................................................6A2-14
Camshaft Removal.................................................................................................................. ..........................6A2-15
Crankshaft Removal.......................................................................................................................................... 6A2-15
Cleaning, Inspection and Repair.........................................................................................................................6A2-15
Cylinder Block....................................................................................................................................................6A2-15
Crankshaft............................................................................................................................................................ 6 A2-17
Piston and Connecting R od.............................................................................................................................6A2-17
Main and Rod Bearings................................................................................................................................... 6A2-20
Camshaft..............................................................................................................................................................6A2-22
SECTION 6A2
2.2L L4
RPO LN2, VIN 4
CONTENTS