3.9L Engine; Engine Front Mounts (Insulators); Engine Rear Mount (Insulator); Engine Front Mounts - Dodge D150 1990 Service Manual

3.9L ENGINE S E R V I C E P R O C E D U R E S
INDEX
Page
Camshaft (Engine Removed From Vehicle) 22
Camshaft Bearings (Engine Removed
From Vehicle) 23
Connecting Rods 26
Crankshaft Identification 27
Crankshaft Main Bearings 27
Crankshaft Main Journals 27
Cylinder Block . . . . 24
Cylinder Heads 13
Distributor Drive Shaft Bushing 23
Engine Assembly 11
Engine Core Oil And Cam Plugs . . . . . . . . . . . . . 25
Engine Front Mounts (Insulators) 10
Engine Rear Mount (Insulator) 10
Engine Specifications—3.9L 33
Hydraulic Tappets 18
Page
Oil Filter 32
Oil Line Plug Inspection 32
Oil Pan . 29
Oil Pump 30
Oil Pump Inspection Limits For
Replacement—3.9L 37
Oversize And Undersize Engine Component
Markings—3.9L 37
Pistons, Pins and Rings 25
Rear Main Bearing Oil Seals 28
Rocker Arms And Shaft Assembly 12
Timing Chain Cover External Oil Seal 21
Timing Chain Cover, Oil Seal And Chain 20
Torque Specifications—3.9L . 38
Valve Timing 19
Valves And Valve Springs 15
ENGINE FRONT MOUNTS (INSULATORS)
REMOVAL
(1) Raise hood and position f a n t o assure clearance
for radiator top t a n k and hose.
(2) I n s t a l l engine l i f t i n g f i x t u r e (Tool C-3487-A).
(3) Raise vehicle o n hoist.
(4) Remove bolts and nuts f r o m brackets and insu-
lators (Fig. 1).
(5)
Raise engine w i t h l i f t i n g f i x t u r e only far
enough t o remove insulators.
INSTALLATION
(1) W i t h engine raised S L I G H T L Y , i n s t a l l insula-
tors on frame crossmember. I n s t a l l bolt and washer
assemblies (Fig. 1).
(2) Lower engine w i t h l i f t i n g f i x t u r e w h i l e g u i d i n g
insulator studs into bracket.
(3) I n s t a l l insulator t o bracket n u t a n d washer.
T i g h t e n t h e attaching nuts to 102 N - m (75 f t . lbs.)
torque and t h e bolts t o 4 1 N»m (30 f t . lbs.) torque
(Fig. 1).
(4) Lower the vehicle.
(5) Remove l i f t i n g f i x t u r e .
ENGINE REAR MOUNT (INSULATOR)
REMOVAL
(1) Raise the vehicle on a hoist.
(2) Position transmission j a c k a n d raise rear of
transmission and engine S L I G H T L Y .
(3) Remove rear mount (insulator) through-bolt and
n u t (Fig. 2).
(4) Remove t h e bolts a t t a c h i n g t h e insulator to
frame crossmember bracket (Fig. 2).
flfrT SIDE) RR09B143
Fig. 1 Engine Front Mounts
(5) Raise rear of transmission enough to provide i n -
sulator to crossmember clearance. Remove the i n s u -
lator.
INSTALLATION
(1) I n s t a l l insulator i n transmission rear support
bracket. I n s t a l l through-bolt.
(2) W i t h insulator secured i n a L E V E L position
(relative to f i n a l attachment to transmission rear
support bracket) t i g h t e n through-bolt n u t to 68 N*m
(50 ft. lbs.) torque.