Dodge RAM TRUCK 1500 1995 Service Manual page 864

9 - 2 0 3 . 9 L E N G I N E
BR
3.9L ENGINE
S E R V I C E
P R O C E D U R E S
INDEX
page
Camshaft . . . . . . 32
Cylinder Block . . 46
Cylinder Head Cover . . 24
Cylinder Heads . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
Distributor . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34
Engine Assembly . . . . . . . . . . . . . . . . . . . . . . . . . 21
Engine Front Mounts . 20
Engine Rear Mount . . 21
Front Crankshaft Oil Seal Replacement . . . . . . . . . 32
General Information 20
Hydraulic Tappets . . 28
GENERAL INFORMATION
The 3.9 Liter (238 C1D) six-cylinder engine is a V-
Type, lightweight, single cam, overhead valve engine
with hydraulic roller tappets (Fig. 1).
Engine Type ...90* V-6 OHV
Bore and Stroke ..99.3 x 84.0 mm (3.9! x 3.31 in.)
Displacement 3.911238 cu. in.)
Compression Ratio 9.1:1
Torque.... 312 N*m |230 ft. Ihs.| @ 3,200 rpm
Firing Order . 1 -6-5-4-3-2
Lubrication Pressure Feed - Full Fbw Filtration
Engine Oil Capacity ...3.8L (4.0 Qts) with Filter
Cooling System Liquid Cooled - Forced Circulation
Coding Capacity 14.31 {15.1 Qts)
Grinder Block... Cast Iron
Crankshaft. .Modular
t i r o
Cylinder Head ..........Cast Iron
Combustion Chambers... "Fast Burn*' Design
Camshaft ............. Nodular Cast iron
Pistons .Aluminum Alby w/Sfrof
Connecting Rods .....Forged Ste®!
J9409-9
Fig. 1 Engine Description
This engine is designed for unleaded fuel.
Engine lubrication system consists of a rotor type
oil pump and a full flow oil filter.
The cylinders are numbered from front to rear; 1 ,
3, 5 on the left bank and 2, 4, 6 on the right bank.
The firing order is
1-6-5-4-3-2
(Fig.
2).
The engine serial number is stamped into a ma­
chined pad located on the left, front corner of the cyl­
inder block. When component part replacement is
necessary, use the engine type and serial number for
reference (Fig. 3).
page
Oil Pan 35
Rocker Arms and Push Rods . . . . . . . . . . . . . . . . 24
Specifications—3.9L Engine . . 48
Timing Chain Cover 30
Valve Components Replace—Cylinder Head Not
Removed . . . . . . . . . . . . . . . . . . . . 24
Valve Stem Seal and Spring Replacement . . . . . . . 24
Valve Timing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29
Valves and Valve Springs 26
Vibration Damper 30
J9309-26
Fig. 2 Firing Order
X M 3.9L T XXXX xxxxxxxx
X = Last Digit of Model Year
M = Plant - M Mound Road
S Sahillo
T Trenton
K Toluca
3.9L - Engine Displacement
T a Usage - T Truck
XXM = Month/Day
XDQ0QOOC - Serial Code - Last 8 Digits of VIN No.
J9209-72
Fig. 3 Engine Identification Number
ENGINE FRONT MOUNTS
REMOVAL
(1) Disconnect the negative cable from the battery.
(2) Position fan to assure clearance for radiator top
tank and hose.