Dodge ram truck 3500 1996 Service Manual page 1048

9 - 58 5.2L ENGINE
INDEX
page
G E N E R A L INFORMATION
OIL PUMP PRESSURE 5 8
PISTON AND CONNECTING ROD ASSEMBLY . . 58
VALVES AND VALVE SPRINGS 58
DESCRIPTION AND OPERATION
ENGINE COMPONENTS . ' . . . . . 61
GENERAL INFORMATION . 58
LUBRICATION SYSTEM . . . . . . . . . . . . . . . 59
S E R V I C E P R O C E D U R E S
CRANKSHAFT MAIN BEARINGS . . . 63
CRANKSHAFT . . . . . 64
FITTING CONNECTING ROD BEARINGS 63
FITTING PISTON RINGS 62
FITTING PISTONS . . . . . . . . . . . . . . 62
MEASURING TIMING CHAIN STRETCH . . . . . . . 61
VALVE TIMING 61
REMOVAL AND INSTALLATION
CAMSHAFT BEARINGS 73
CAMSHAFT . . . . . . . . . . . . . . 72
CRANKSHAFT MAIN BEARINGS . . . 73
CRANKSHAFT REAR OIL SEALS 77
CRANKSHAFT 76
CYLINDER HEAD COVER 67
CYLINDER HEADS 68
DISTRIBUTOR DRIVE SHAFT BUSHING 74
ENGINE ASSEMBLY 65
ENGINE CORE OIL AND CAMSHAFT PLUGS . . 79
ENGINE FRONT MOUNTS . . , . 64
ENGINE REAR MOUNT 64
M I N E R A L I i .. .
VALVES AND VALVE SPRINGS
The valves are arranged in-line and inclined 18°.
The rocker pivot support and the valve guides are
cast integral with the heads.
OIL PUMP PRESSURE
The MINIMUM oil pump pressure is 41.4 k?a (6
psi) at curb idle. The MAXIMUM oil pump pressure
is 207-552 kPa (30-80 psi) at 3,000 RPM or more.
CAUTION: If oil pressure is Z E R O at curb idie, DO
NOT run engine at 3,000 RPM.
PISTON AND CONNECTING ROD ASSEMBLY
The pistons are elliptically turned so that the
diameter at the pin boss is less than its diameter
page
FRONT CRANKSHAFT OIL SEAL . 77
HYDRAULIC TAPPETS 69
OIL PAN . . . . . . . . . 75
OIL PUMP . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 77
PISTON AND CONNECTING ROD ASSEMBLY . . 75
ROCKER ARMS AND PUSH RODS . . . . . . 67
TIMING CHAIN COVER 70
TIMING CHAIN . . . . . . . . . . . . . . . . . . . . . . . . . . 71
VALVE SPRING AND STEM SEAL
REPLACEMENT-SN VEHICLE . . 67
VALVES AND VALVE SPRINGS . . . . . . . . . 69
VIBRATION DAMPER . . . . . . . . . . . . . . . . . . . . . 69
DISASSEMBLY AND ASSEMBLY
CYLINDER BLOCK . . . . . . . . . . 83
HYDRAULIC TAPPETS 80
OIL PUMP 82
VALVE SERVICE . . . . . . . . . . . . . . . . . . . . 81
CLEANING AND INSPECTION
CRANKSHAFT INSPECTION OF JOURNALS . . . 83
CYLINDER BLOCK 85
CYLINDER HEADS . . . . . . 83
OIL PAN . . . . . . . . . . . . . . . . . . 83
OIL PUMP 84
PISTON AND CONNECTING ROD ASSEMBLY . . 83
SPECIFICATIONS
5.2L ENGINE SPECIFICATIONS . . . . . . . . . . . . . 87
S P E C I A L T O O L S
5.2L ENGINE 91
across the thrust face. This allows for expansion
under normal operating conditions. Under operating
temperatures, expansion forces the pin bosses away
from each other, causing the piston to assume a more
nearly round shape.
All pistons are machined to the same weight,
regardless of size, to maintain piston balance.
The piston pin rotates in the piston only and is
retained by the press interference fit of the piston
pin in the connecting rod.
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GENERAL l l F O i l M I O i
The 5 . 2 Liter (318 CID) eight-cylinder engine is a
V-Type lightweight, single cam, overhead valve
engine with hydraulic roller tappets (Fig. 1).
This engine is designed for unleaded fuel.