GMC T Series 1994 Repair Manual page 508

SUBJECT
Cylinder B o re s ........................................................................................................................................................... 6A7-23
Cylinder Bore Reconditioning G uidelines..................................................................................................... 6A7-23
B o rin g ........................................................................................................................................................................6A7-24
Rough H o n in g ........................................................................................................................................................ 6A7-24
Finish H o n in g ......................................................................................................................................................... 6A7-24
Piston and Connecting Rod A ssem blies.......................................................................................................... 6A7-26
D isassem bly............................................................................................................................................................ 6A7-26
Cleaning and Inspection..................................................................................................................................... 6A7-26
Piston M easurem ent............................................................................................................................................. 6A7-26
Piston S election .....................................................................................................................................................6A7-27
Measuring Piston Pin to Piston Pin Bushing Clearance.......................................................................... 6A7-27
Assembling the Piston and Connecting R o d ...............................................................................................6A7-27
Installing the Piston R in g s.................................................................................................................................6A7-28
Intake and Exhaust M anifolds...............................................................................................................................6A7-29
Cam shaft...................................................................................................................................................................... 6A7-29
Camshaft B earings....................................................................................................................................................6A7-29
Timing Chain, Sprockets, and Timing G e a rs ................................................................................................... 6A7-31
Front C o v e r.................................................................................................................................................................6A7-31
Coolant P u m p ............................................................................................................................................................ 6A7-31
Oil Pan and Rocker Arm C o v e rs ......................................................................................................................... 6A7-31
Oil P um p ...................................................................................................................................................................... 6A7-32
Valve Train Com ponents..........................................................................................................................................6A7-32
Hydraulic Lifters.................................................................................................................................................... 6A7-33
Cylinder Head............................................................................................................................................................. 6A7-33
Glow P lu g s ..................................................................................................................................................................6A7-35
Thermostat and Coolant Crossover.................................................................................................................... 6A7-36
Injection Nozzle T ests.............................................................................................................................................. 6A7-36
Opening Pressure Test................................................................................................................................... .....6A7-36
Leakage Test........................................................................................................................................................... 6A7-37
Chatter Test............................................................................................................................................................. 6A7-37
Spray T e s t................................................................................................................................................................6A7-37
Injection Lines............................................................................................................................................................ 6A7-37
Injection P um p...........................................................................................................................................................6A7-37
Injection Pump Repair......................................................................................................................................... 6A7-37
Crankshaft and Bearings........................................................................................................................................ 6A7-37
Cleaning and Inspection..................................................................................................................................... 6A7-37
Available Bearing S iz e s ...................................................................................................................................... 6A7-38
Flyw heel.................................................................................................................................................................. .
Torsional D am p er......................................................................................................................................................6A7-39
Assem bly..........................................................................................................................................................................6A7-39
Oil Filter and Oil Cooler Bypass Valve Replacem ent....................................................................................6A7-39
Camshaft Installation............................................................................................................................................... 6A7-39
Crankshaft Installation.............................................................................................................................................6A7-39
Timing Chain and Sprocket Installation............................................................................................................ 6A7-41
Front Cover Installation...........................................................................................................................................6A7-42
Torsional Damper Installation........................................................................................ ....................................... 6A7-42
Hydraulic Lifter Installation....................................................................................................................................6A7-42
Connecting Rod and Piston Installation............................................................................................................6A7-44
Connecting Rod and Bearing Selection........................................................................................................ 6A7-44
Installation................................................................................................................................................................6A7-44
Marking TDC on the Front C over.................................................................................................................... 6A7-45
Oil Pump Installation...................... .........................................................................................................................6A7-46
Oil Pan Installation................................................................................................................................................... 6A7-46
Cylinder Head Installation...................................................................................................................................... 6A7-46
Pushrod and Rocker Arm Installation................................................................................................................ 6A7-47
Rocker Arm Cover Installation............................................................................................................................. 6A7-48
Injection Pump Installation..................................................................................................................................... 6A7-49
Coolant Pump Installation...................................................................................................................................... 6A7-49
CONTENTS (cont'd)
PAGE
6A7-38