Chrysler Town & Country/Voyager, Dodge Caravan, Plymouth Voyager. Manual — part 313
valve seat inserts are used. A steel flanged composition
type gasket is used between head and block.
VALVE COVERS: The covers are sealed with steel
reinforced silicon rubber gaskets.
INTAKE MANIFOLD: The intake manifold is a
tuned two-piece semi-permanent mold aluminum cast-
ing with individual primary runners leading from a
plenum to the cylinders. The manifold is designed to
boost torque in the 3600 rpm range and contributes to
the engine’s broad, flat torque curve, which was de-
sired for excellent engine tractability, response and
usable power output.
The intake manifold is also cored with upper level
EGR passages for balanced cylinder to cylinder EGR
distribution.
VALVE TRAIN: Valve train design incorporates the
use of hydraulic roller tappets. Rocker arms are in-
stalled on a rocker arm shaft attached to the cylinder
head with four bolts and retainers. Viton valve stem
seals provide valve sealing. Unique beehive style valve
spring are used with lightweight retainers for im-
proved high RPM performance.
EXHAUST MANIFOLDS: Exhaust manifolds are
log type with a crossover and is attached directly to the
cylinder heads.
ENGINE MOUNTS
REMOVAL AND INSTALLATION
RIGHT SIDE MOUNT
(1) Remove the right engine mount insulator verti-
cal fasteners from frame rail.
(2) Remove the load on the engine motor mounts by
carefully supporting the engine and transmission as-
sembly with a floor jack.
(3) Remove the thru bolt from the insulator assem-
bly. Remove insulator.
(4) Reverse removal procedure for installation. Refer
to (Fig. 3) for bolt tightening specifications.
(5) Engine mount adjustment, Refer to Engine
Mount Insulator Adjustment of this section.
Fig. 1 3.3L Engine
Fig. 2 Engine Identification
.
3.3L ENGINE
9 - 83
Fig.
3
Engine
Mounting
9 - 84
3.3L ENGINE
.
FRONT MOUNT
(1) Support the engine and transmission assembly
with a floor jack so it will not rotate.
(2) Remove the thru bolt from the insulator and
front crossmember mounting bracket.
(3) Remove the front engine mount bracket to front
crossmember screws and nuts. Remove the insulator
assembly.
(4) Reverse removal procedure for installation. Refer
to (Fig. 3) for bolt tightening specifications.
(5) Engine mount adjustment, Refer to Engine
Mount Insulator Adjustment of this section.
LEFT SIDE MOUNT
(1) Raise vehicle on hoist and remove left front
wheel.
(2) Remove inter splash shield.
(3) Support the transmission with a transmission
jack.
(4) Remove the insulator thru bolt from the mount.
(5) Remove the transmission mount fasteners and
remove mount.
(6) Reverse removal procedure for installation. Refer
to (Fig. 3) for bolt tightening specifications.
(7) Engine mount adjustment, Refer to Engine
Mount Insulator Adjustment of this section.
ENGINE MOUNT RUBBER INSULATORS
Insulator location on frame rail (right side) and
transmission bracket (left side) are adjustable to allow
right/left drive train adjustment in relation to drive
shaft assembly length.
Check and reposition right engine mount insulator
(left engine mount insulator is floating type and will
adjust automatically (Fig. 4). Adjust drive train posi-
tion, if required, for the following conditions:
• Drive shaft distress: See Driveshafts in Suspension,
Group 2.
• Any front end structural damage (after repair).
• Insulator replacement.
ENGINE MOUNT INSULATOR ADJUSTMENT
(1) Remove the load on the engine motor mounts by
carefully supporting the engine and transmission as-
sembly with a floor jack.
(2) Loosen the right engine mount insulator vertical
fasteners, and the front engine mount bracket to front
crossmember screws and nuts.
Left engine mount insulator is sleeved over
shaft and long support bolt to provide lateral
movement adjustment with engine weight re-
moved or not.
(3) Pry the engine right or left as required to achieve
the proper drive shaft assembly length. See Drive
Shaft in Suspension Group 2 for driveshaft identifica-
tion and related assembly length measuring.
(4) Tighten right engine mount insulator vertical
bolts to 37 N
Im (27 ft. lbs.). Then tighten front engine
mount screws and nuts to 54 N
Im (40 ft. lbs.) and
center left engine mount insulator.
(5) Recheck drive shaft length.
ENGINE ASSEMBLY
REMOVAL
(1) Disconnect battery.
(2) Mark hood position at hinges and remove hood.
(3) Drain cooling system. Refer to Cooling System,
Group 7 for procedure.
(4) Disconnect all electrical connections.
(5) Remove coolant hoses from radiator and engine.
(6) Remove radiator and fan assembly.
(7) See Fuel System, Group 14, to release fuel pres-
sure. Disconnect fuel lines and accelerator cable.
(8) Remove air cleaner assembly.
(9) Hoist vehicle and drain engine oil.
(10) Remove air conditioning compressor mounting
bolts and set compressor aside.
(11) Disconnect exhaust pipe at manifold.
(12) Remove transmission inspection cover and
mark flex plate to torque converter position. For disas-
sembly procedure for the all wheel drive vehicle refer to
Group 21 Transaxle.
(13) Remove screws holding torque converter to flex
plate and attach C-clamp on bottom of converter hous-
ing to prevent torque converter from counting out.
(14) Remove power steering pump mounting bolts
and set pump aside.
(15) Remove two lower transmission to block screws.
(16) Remove starter.
(17) Lower vehicles and disconnect vacuum lines
and ground strap.
(18) Install transmission holding fixture.
Fig. 4 Left Insulator Movement
.
3.3L ENGINE
9 - 85
(19) Attach engine lifting hoist and support engine.
(20) Remove upper transmission case to block bolts.
(21) See Engine Mounting in (Fig. 3) and separate
mount/insulators as follows:
(a) Mark RIGHT insulator on right rails supports.
Remove insulator to rails screws.
(b) Remove FRONT engine mount through bolt
and nut.
(c) Remove LEFT insulator through bolt from in-
side wheelhouse or insulator bracket to transmission
screws.
(22) Remove engine.
INSTALLATION
(1) Attach hoist and lower engine into engine com-
partment.
(2) Align engine mounts and install but do not
tighten until all mounting bolts have been installed.
Tighten bolts to torque specified in (Fig. 3).
(3) Install transmission case to cylinder block,
tighten bolts to 102 N
Im (75 ft. lbs.) torque.
(4) Remove engine hoist and transmission holding
fixture.
(5) Remove C-clamp from torque converter housing.
Align flex plate to torque converter and install mount-
ing screws. Tighten to 75 N
Im (55 ft. lbs.) torque. Refer
to Group 21 transaxle for the all wheel drive installa-
tion procedure.
(6) Install transmission inspection cover.
(7) Connect exhaust system at manifold.
(8) Install starter.
(9) Install power steering pump and air conditioning
compressor. For belt installation see Accessory Belt
Drive in Cooling System Group 7.
(10) Lower vehicle and connect all vacuum lines.
(11) Connect all electrical connections including
ground strap.
(12) Connect fuel lines and accelerator cable.
(13) Install radiator and fan assembly. Reconnect
fan motor electrical lead. Reinstall radiator hoses. Fill
cooling system. See Cooling System Group 7 for filling
procedure.
(14) Fill engine crankcase with proper oil to correct
level.
(15) Install hood.
(16) Connect battery.
(17) Start engine and run until operating tempera-
ture is reached.
(18) Adjust transmission or linkage if necessary.
ROCKER ARMS AND SHAFT ASSEMBLY
REMOVAL
(1) Remove upper intake manifold assembly. Refer
to Intake and Exhaust Manifolds, Group 11.
(2) Disconnect spark plug wires by pulling on the
boot straight out in line with plug.
(3) Disconnect closed ventilation system and evapo-
ration control system from cylinder head cover.
(4) Remove cylinder head cover and gasket.
(5) Remove four rocker shaft bolts and retainers.
(6) Remove rocker arms and shaft assembly.
(7) If rocker arm assemblies are disassembled for
cleaning or replacement. Assemble rocker arms in
there original position refer to (Fig. 5) for rocker arm
for positioning on the shaft.
INSTALLATION
(1) Install rocker arm and shaft assemblies with the
stamped steel retainers in the four positions, tighten to
28 N
Im (250 in. lbs.) (Fig. 5).
WARNING:
THE
ROCKER
ARM
SHAFT
SHOULD BE TORQUED DOWN SLOWLY, START-
ING WITH THE CENTERMOST BOLTS. ALLOW
20 MINUTES TAPPET BLEED DOWN TIME AF-
TER INSTALLATION OF THE ROCKER SHAFTS
BEFORE ENGINE OPERATION.
(2) Clean cylinder head cover gasket surface. Inspect
cover for distortion and straighten if necessary.
(3) Clean head rail if necessary. Install a new gasket
and tighten cylinder head cover fasteners to 12 N
Im
(105 in. lbs.).
(4) Install closed crankcase ventilation system and
evaporation control system.
(5) Install spark plug wires.
(6) Install upper intake manifold assembly. Refer to
Exhaust Systems and Intake Manifolds Group 11.
CYLINDER HEADS
The alloy aluminum cylinder heads shown in (Fig. 6)
are held in place by 9 bolts. The spark plugs are located
in peak of the wedge between the valves.
Fig. 5 Rocker Arm Location Left Blank
9 - 86
3.3L ENGINE
.
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