height DODGE TOWN AND COUNTRY 2001 Owner's Manual

INSTALLATION
(1) Position second row seat belt retractor in vehi-
cle.
(2) Install screw attaching retractor to inner quar-
ter panel.
(3) Install bolt attaching retractor to inner quarter
panel. Tightening specifications for all seat belt bolts
is 39 N´m (29 ft. lbs.) torque.
(4) Route seat belt webbing and turning loop
through access hole in quarter trim.
(5) Install quarter trim bolster.
(6) Install D-pillar trim panel.
(7) Position turning loop to extension bracket.
(8) Install bolt attaching turning loop to extension
bracket above quarter glass. Tightening specifications
for all seat belt bolts is 39 N´m (29 ft. lbs.) torque.
(9) Install upper turning loop extension cover.
(10) Position lower anchor to wheelhouse.
(11) Install lower anchor shoulder-nut. Tightening
shoulder nut to 39 N´m (29 ft. lbs.) torque.
(12) Install lower anchor cover over the anchor
shoulder-nut.(13) Install second row seat to vehicle. Refer to
Owner's Manual for proper procedures.
SEAT BELT SECOND RIGHT
ROW OUTBOARD - LBW WITH
REAR HVAC
REMOVAL
(1) Remove second row seat from vehicle. Refer to
Owner's Manual for proper procedures.
(2) Slide lower anchor cover from over the anchor
shoulder-nut.
(3) Remove lower anchor shoulder-nut.
(4) Remove lower anchor from wheelhouse.
(5) Fold upper turning loop extension cover down-
ward to gain access to anchor bolt.
(6) Remove bolt attaching turning loop to exten-
sion bracket above quarter glass.
(7) Remove turning loop from extension bracket.
(8) Remove D-pillar trim panel.
(9) Remove quarter trim bolster.
(10) Remove quarter trim panel as necessary to
gain access to HVAC unit.
(11) Route seat belt webbing and turning loop
through access hole in quarter trim.
(12) Loosen HVAC unit enough to gain access to
seat belt retractor fasteners.
(a) Remove bracket around HVAC unit (Fig. 6).
(b) Remove air duct (Fig. 7).
(c) Remove fasteners attaching HVAC unit to
inner quarter panel (Fig. 8).
(d) Remove screws attaching upper evaporator
housing to lower evaporator housing.
(e) Remove coolant line retaining bracket hold
down bolt.
(13) Remove bolts attaching seat belt guide loop to
inner quarter panel.
(14) Pull outward on HVAC unit and remove bolt
attaching retractor to inner quarter panel.
(15) Remove screw attaching retractor to inner
quarter panel.
(16) Remove second row seat belt retractor from
vehicle.
INSTALLATION
(1) Position second row seat belt retractor to vehi-
cle.
(2) Install screw attaching retractor to inner quar-
ter panel.
(3) Pull outward on HVAC unit and install bolt
attaching retractor to inner quarter panel. Tighten-
ing specifications for all seat belt bolts is 39 N´m (29
ft. lbs.) torque.
Fig. 5 SECOND RIGHT ROW OUTBOARD SEAT
BELT - LWB
1 - TURNING LOOP GUIDE
2 - RETRACTOR 2nd REAR
3 - LOWER QUARTER TRIM
4 - LOWER ANCHOR
5 - RETRACTOR 1st REAR
6 - ANCHOR BRACKET
7 - QUARTER PANEL
8 - C-PILLAR TRIM
9 - HEIGHT ADJUSTER
RSRESTRAINTS8O-11
SEAT BELT SECOND RIGHT ROW OUTBOARD - LWB (Continued)
ProCarManuals.com

defective they must be replaced. After an airbag
deployment, the tensioner must be replaced.
OPERATION
At the onset of an impact event, each tensioner
uses a pyrotechnic device which is triggered simulta-
neously with the airbags to rapidly retract the seat
belts. With the slack removed, the occupant's forward
motion in an impact will be reduced as will the like-
lihood of contacting interior components. After an
impact that deploys the airbags, the seat belt ten-
sioner assembly must be replaced.
The Occupant Restraint Controller (ORC) monitors
the seat belt tensioner circuit resistance and reports
active and stored Diagnostic Trouble Codes (DTC's) if
any problem is found.
Once a vehicle has been in an accident, the tensioner
must be replaced along with any deployed airbags and
broken or damaged parts. Refer to the proper Body
Diagnostic Procedures manual for diagnosis and testing.
WARNING: WHEN THE FRONT AIRBAG IS
DEPLOYED, THE TENSIONER WILL HAVE
DEPLOYED ALSO AND SHOULD BE REPLACED.
SHOULDER BELT HEIGHT
ADJUSTER
REMOVAL
(1) Remove B or C-pillar trim cover.
(2) Remove screws attaching shoulder belt height
adjuster to pillar.
(3) Remove height adjuster from vehicle (Fig. 13).
INSTALLATION
(1) Place height adjuster into position.
(2) Install screws attaching shoulder belt height
adjuster to pillar. Tighten seat belt anchor bolts to 39
N´m (29 ft. lbs.) torque.
(3) Install B or C-pillar trim cover.
SHOULDER BELT HEIGHT
ADJUSTER KNOB
REMOVAL
(1) Disengage clips attaching clam shell cover to
seat belt turning loop and open cover.
(2) Using a trim tool, pry knob from shoulder belt
height adjuster (Fig. 14).
INSTALLATION
(1) Place shoulder belt height adjuster knob in
position on height adjuster.(2) Push knob on until retainers engage.
SIDE IMPACT AIRBAG
CONTROL MODULE
DESCRIPTION
The side airbag system is a safety devise designed
to reduce the risk of fatality or serious injury, caused
by a side impact of the vehicle.
Vehicles equipped with side impact airbags use two
Side Impact Airbag Control Modules (SIACM). One is
Fig. 13 SHOULDER BELT HEIGHT ADJUSTER
1 - SHOULDER HARNESS HEIGHT ADJUSTER
2 - PILLAR
3 - HOOK
4 - BUSHING
Fig. 14 SHOULDER BELT HEIGHT ADJUSTER KNOB
1 - KNOB
2 - HEIGHT ADJUSTER
3 - SEAT BELT TURNING LOOP
4 - SNAP-ON TRIM TOOL A179A
RSRESTRAINTS8O-15
SEAT BELT TENSIONER (Continued)
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DESCRIPTION SPECIFICATION
Bore DiameterÐ
Crankshaft End53.007±52.993 mm
(2.0868±2.0863 in.)
Side Clearance 0.13±0.38 mm
(0.005±0.015 in.)
Wear Limit 0.40 mm
(0.016 in.)
WeightÐTotal (Less
Bearing)565.8 grams
(19.96 oz.)
Crankshaft
Connecting Rod Journal
Diameter49.984±50.000 mm
(1.968±1.9685 in.)
Main Bearing Journal
Diameter59.992±60.008 mm
(2.362±2.3625 in.)
Journal Out-of-Round
(Max.)0.0035 mm
(0.0003 in.)
Journal Taper (Max.) 0.007 mm
(0.0001 in.)
End Play 0.09±0.24 mm
(0.0035±0.0094 in.)
Wear Limit 0.38 mm
(0.015 in.)
Main Bearing Diametrical
Clearance0.018±0.062 mm
(0.0007±0.0024 in.)
Hydraulic Lash Adjuster
Body Diameter 15.901±15.913 mm
(0.626±0.6264 in.)
Plunger Travel Minimum
(Dry)3.0 mm
(0.118 in.)
Cylinder Head Camshaft Bearing Bore Diameter
Journals No.1±6 26.020±26.041 mm
(1.024±1.025 in.)
Camshaft
Journal Diameter No. 1±6 25.951±25.970 mm
(1.021±1.022 in.)
Bearing ClearanceÐ
Diametrical0.069±0.071 mm
(0.0027±0.003 in.)
End Play 0.05±0.17 mm
(0.0019±0.0066 in.)
Lift (Zero Lash)
Intake 8.25 mm
(0.324 in.)DESCRIPTION SPECIFICATION
Exhaust 6.60 mm
(0.259 in.)
Intake Valve Timing*
Closes (ABDC) 51É
Opens (BTDC) 1É
Duration 232É
Exhaust Valve Timing*
Closes (ATDC) 7É
Opens (BBDC) 47É
Duration 234É
Valve Overlap 8É
*All readings in crankshaft degrees. Timing points @
4É from top of Ramps.
Cylinder Head
Material Cast Aluminum
Gasket Thickness
(Compressed)1.15 mm
(0.045 in.)
Valve Seat
Angle 44.5±45É
Seat DiameterÐIntake 34.37±34.63 mm
(1.353±1.363 in.)
Seat DiameterÐExhaust 27.06±27.32 mm
(1.065±1.075 in.)
Runout (Max.) 0.05 mm
(0.002 in.)
Valve Seat WidthÐIntake
and Exhaust0.9±1.3 mm
(0.035±0.051 in.)
Service LimitÐIntake 2.0 mm
(0.079 in.)
Service LimitÐExhaust 2.5 mm
(0.098 in.)
Valve Guide
Diameter I.D. 5.975±6.000 mm
(0.235±0.236 in.)
Guide Bore Diameter 11.0±11.02 mm
(0.4330±0.4338 in.)
Guide Height (spring seat
to guide tip)13.25±13.75 mm
(0.521±0.541 in.)
RSENGINE 2.4L9-17
SPECIFICATIONS (Continued)
ProCarManuals.com

DESCRIPTION SPECIFICATION
Valves
Face AngleÐIntake and
Exhaust44.5Ð45É
Head DiameterÐIntake 34.67±34.93 mm
1.364±1.375 in.)
Head DiameterÐExhaust 28.32±28.52 mm
(1.114±1.122 in.)
Valve Length (Overall)
ÐIntake 112.76±113.32 mm
(4.439±4.461 in.)
ÐExhaust 110.89±111.69 mm
(4.365±4.397 in.)
Valve Stem Diameter
ÐIntake 5.934±5.952 mm
(0.2337±0.2344 in.)
ÐExhaust 5.906±5.924 mm
(0.2326±0.2333 in.)
Valve Margin
Intake 1.2±1.7 mm
(0.047±0.066 in.)
Service Limit 0.95 mm
(1/32 in.)
Exhaust 0.985±1.315 mm
(0.038±0.051 in.)
Service Limit 1.05 mm
(3/64 in.)
Valve Stem Tip Height
Intake 48.04 mm
(1.891 in.)
Exhaust 47.99 mm
(1.889 in.)
Valve Stem to Guide Clearance
Intake 0.048±0.066 mm
(0.0018±0.0025 in.)
Max. Allowable 0.076 mm
(0.003 in.)
Service Limit 0.25 mm
(0.010 in.)
Exhaust 0.0736±0.094 mm
(0.0029±0.0037 in.)DESCRIPTION SPECIFICATION
Max. Allowable 0.101 mm
(0.004 in.)
Service Limit 0.25 mm
(0.010 in.)
Valve Springs
Free Length (Approx.) 48.4 mm
(1.905 in.)
Nominal Force (Valve
Closed)338 N @ 38.0 mm
(75.98 lbs. @ 1.496 in.)
Nominal Force (Valve
Open)607 N @ 29.75 mm
(136 lbs. @ 1.172 in.)
Installed Height 38.00 mm
(1.496 in.)
Number of Coils 7.82
Wire Diameter 3.86 mm
(1.496 in.)
Oil Pump
Clearance Over Rotors
(Max.)0.10 mm
(0.004 in.)
Cover Out-of-Flat (Max.) 0.025 mm
(0.001 in.)
Inner Rotor Thickness
(Min.)9.40 mm
(0.370 in.)
Outer Rotor Thickness
(Min.)9.40 mm
(0.370 in.)
Outer Rotor Clearance
(Max.)0.039 mm
(0.015 in.)
Outer Rotor Diameter
(Min.)79.95 mm
(3.148 in.)
Tip Clearance Between
Rotors (Max.)0.20 mm
(0.008 in.)
Oil Pressure
At Curb Idle Speed* 25 kPa
(4 psi)
At 3000 rpm 170±550 kPa
(25±80 psi)
CAUTION: *If pressure is ZERO at curb idle, DO
NOT run engine at 3000 rpm.
9 - 18 ENGINE 2.4LRS
SPECIFICATIONS (Continued)
ProCarManuals.com

(6) Remove heater tube support bracket from cyl-
inder head.
(7) Disconnect radiator upper and heater supply
hoses from intake manifold water outlet connections.
(8) Remove accessory drive belts. (Refer to 7 -
COOLING/ACCESSORY DRIVE/DRIVE BELTS -
REMOVAL)
(9) Raise vehicle and remove exhaust pipe from
manifold.
(10) Remove power steering pump reservoir and
line support bracket from lower intake manifold and
set aside. Do not disconnect lines.
(11) Remove ignition coil and wires from engine.
(12) Disconnect cam sensor and fuel injector wir-
ing connectors.
(13) Remove timing belt and camshaft sprockets.
(Refer to 9 - ENGINE/VALVE TIMING/TIMING
BELT/CHAIN AND SPROCKETS - REMOVAL)
(14) Remove timing belt idler pulley and rear tim-
ing belt cover. (Refer to 9 - ENGINE/VALVE TIM-
ING/TIMING BELT / CHAIN COVER(S) -
REMOVAL)
(15) Remove cylinder head cover. (Refer to 9 -
ENGINE/CYLINDER HEAD/CYLINDER HEAD
COVER(S) - REMOVAL)
(16) Remove camshafts (Refer to 9 - ENGINE/
CYLINDER HEAD/CAMSHAFT(S) - REMOVAL).
NOTE: Identify rocker arm position to ensure cor-
rect re-installation in original position, if reused.
(17) Remove rocker arms. (Refer to 9 - ENGINE/
CYLINDER HEAD/ROCKER ARMS - REMOVAL)
(18) Remove cylinder head bolts in REVERSE
sequence of tightening (Fig. 19).
(19) Remove cylinder head from engine block.
(20) Inspect and clean cylinder head. (Refer to 9 -
ENGINE/CYLINDER HEAD - INSPECTION) (Refer
to 9 - ENGINE/CYLINDER HEAD - CLEANING)
CLEANING
To ensure engine gasket sealing, proper surface
preparation must be performed, especially with the
use of aluminum engine components and multi-layer
steel cylinder head gaskets.
NOTE: Multi-Layer Steel (MLS) head gaskets require
a scratch free sealing surface.
Remove all gasket material from cylinder head and
block. (Refer to 9 - ENGINE - STANDARD PROCE-
DURE) Be careful not to gouge or scratch the alumi-
num head sealing surface.
Clean all engine oil passages.
INSPECTION
(1) Cylinder head must be flat within 0.1 mm
(0.004 in.) (Fig. 14).
(2) Inspect camshaft bearing journals for scoring.
(3) Remove carbon and varnish deposits from
inside of valve guides with a reliable guide cleaner.
(4) Using a small hole gauge and a micrometer,
measure valve guides in 3 places top, middle and bot-
tom (Fig. 15). (Refer to 9 - ENGINE - SPECIFICA-
TIONS) Replace guides if they are not within
specification.
(5) Check valve guide height (Fig. 16).
INSTALLATION - CYLINDER HEAD
NOTE: The Cylinder head bolts should be examined
BEFORE reuse. If the threads are necked down, the
bolts must be replaced (Fig. 17).
Fig. 14 Checking Cylinder Head Flatness
1 - FEELER GAUGE
2 - STRAIGHT EDGE
Fig. 15 Checking Wear on Valve GuideÐTypical
1-TOP
2 - MIDDLE
3 - BOTTOM
4 - CUT AWAY VIEW OF VALVE GUIDE MEASUREMENT
LOCATIONS
9 - 24 ENGINE 2.4LRS
CYLINDER HEAD (Continued)
ProCarManuals.com

Necking can be checked by holding a scale or
straight edge against the threads. If all the threads
do not contact the scale, the bolt should be replaced.
(1) Before installing the bolts, the threads should
be coated with engine oil.
(2) Position cylinder head gasket on engine block
(Fig. 18).
(3) Install cylinder head on engine block.
(4) Tighten the cylinder head bolts in the sequence
shown in (Fig. 19). Using the 4 step torque turn
method, tighten according to the following values:
²First All to 34 N´m (25 ft. lbs.)
²Second All to 68 N´m (50 ft. lbs.)
²Third All to 68 N´m (50 ft. lbs.)
CAUTION: Do not use a torque wrench for the fol-
lowing step.
²Fourth Turn an additional 1/4 Turn,(5) Install rocker arms. (Refer to 9 - ENGINE/
CYLINDER HEAD/ROCKER ARMS - INSTALLA-
TION)
(6) Install camshafts. (Refer to 9 - ENGINE/CYL-
INDER HEAD/CAMSHAFT(S) - INSTALLATION).
(7) Install cylinder head cover. (Refer to 9 -
ENGINE/CYLINDER HEAD/CYLINDER HEAD
COVER(S) - INSTALLATION)
(8) Install timing belt rear cover and timing belt
idler pulley. (Refer to 9 - ENGINE/VALVE TIMING/
TIMING BELT / CHAIN COVER(S) - INSTALLA-
TION)
(9) Install timing belt and camshaft sprockets.
(Refer to 9 - ENGINE/VALVE TIMING/TIMING
BELT/CHAIN AND SPROCKETS - INSTALLATION)
(10) Connect cam sensor and fuel injectors wiring
connectors.
(11) Install ignition coil and wires. Connect igni-
tion coil wiring connector.
(12) Install power steering pump reservoir and
line support bracket to cylinder head.
Fig. 16 Valve Guide Height
1 - VALVE GUIDE
2 - 13.25 - 13.75 MM (0.521 - 0.541 IN.)
3 - SPRING SEAT
Fig. 17 Checking Bolts for
1 - STRETCHED BOLT
2 - THREADS ARE NOT STRAIGHT ON LINE
3 - THREADS ARE STRAIGHT ON LINE
4 - UNSTRETCHED BOLT
Fig. 18 Cylinder Head Gasket Positioning
1 - PART NUMBER FACES UP
2 - NO. 1 CYLINDER
Fig. 19 Cylinder Head Tightening Sequence
RSENGINE 2.4L9-25
CYLINDER HEAD (Continued)
ProCarManuals.com

CAUTION: When depressing the valve spring retain-
ers with valve spring compressor the locks can
become dislocated. Ensure both locks are in the
correct location after removing tool.
(4) Check the valve spring installed height B after
refacing the valve and seat (Fig. 37). Make sure mea-
surements are taken from top of spring seat to the
bottom surface of spring retainer. If height is greater
than 38.75 mm (1.525 in.), install a 0.762 mm (0.030
in.) spacer under the valve spring seat to bring
spring height back within specification.
HYDRAULIC LIFTERS
DIAGNOSIS AND TESTING - LASH ADJUSTER
(TAPPET) NOISE
A tappet-like noise may be produced from several
items. Check the following items.
(1) Engine oil level too high or too low. This may
cause aerated oil to enter the adjusters and cause
them to be spongy.
(2) Insufficient running time after rebuilding cylin-
der head. Low speed running up to 1 hour may be
required.
(3) During this time, turn engine off and let set for
a few minutes before restarting. Repeat this several
times after engine has reached normal operating
temperature.
(4) Low oil pressure.
(5) The oil restrictor (integral to the head gasket)
in the vertical oil passage to the cylinder head is
plugged with debris.
(6) Air ingested into oil due to broken or cracked
oil pump pick up.
(7) Worn valve guides.
(8) Rocker arm ears contacting valve spring
retainer.(9) Rocker arm loose, adjuster stuck or at maxi-
mum extension and still leaves lash in the system.
(10) Faulty lash adjuster.
²Check lash adjusters for sponginess while
installed in cylinder head. Depress part of rocker
arm over adjuster. Normal adjusters should feel very
firm. Spongy adjusters can be bottomed out easily.
²Remove suspected lash adjusters, and replace as
necessary.
REMOVAL
NOTE: This procedure is for in-vehicle service with
camshafts installed.
(1) Remove cylinder head cover. (Refer to 9 -
ENGINE/CYLINDER HEAD/CYLINDER HEAD
COVER(S) - REMOVAL)
(2) Remove rocker arm. (Refer to 9 - ENGINE/
CYLINDER HEAD/ROCKER ARMS - REMOVAL)
(3) Remove hydraulic lifter (Fig. 38).
(4) Repeat removal procedure for each hydraulic
lifter.
(5) If reusing, mark each hydraulic lifter for reas-
sembly in original position. Lifters are serviced as an
assembly.
INSTALLATION
(1) Install hydraulic lifter (Fig. 38). Ensure the
lifters are at least partially full of engine oil. This is
indicated by little or no plunger travel when the
lifter is depressed.
(2) Install rocker arm. (Refer to 9 - ENGINE/CYL-
INDER HEAD/ROCKER ARMS - INSTALLATION)
(3) Repeat installation procedure for each hydrau-
lic lifter.
(4) Install cylinder head cover. (Refer to 9 -
ENGINE/CYLINDER HEAD/CYLINDER HEAD
COVER(S) - INSTALLATION)
Fig. 37 Checking Spring Installed Height and Valve
Tip Height Dimensions
1 - GARTER SPRING
2 - VALVE SPRING SEAT
3 - CYLINDER HEAD SURFACE
Fig. 38 Hydraulic Lifter
9 - 32 ENGINE 2.4LRS
VALVE SPRINGS (Continued)
ProCarManuals.com

DESCRIPTION SPECIFICATION
Face AngleÐIntake 45±45.5É
Face AngleÐExhaust 45±45.5É
Head DiameterÐIntake 47.87±48.13 mm
(1.88±1.89 in.)
Head DiameterÐExhaust 35.37±35.63 mm
(1.39±1.40 in.)
Valve Margin
Intake 0.825±0.973 mm
(0.032±0.038 in.)
Exhaust 1.565±1.713 mm
(0.061±0.067 in.)
Valve Length (Overall)
Intake 125.84±126.6 mm
(4.95±4.98 in.)
Exhaust 127.2±127.96 mm
(5.00±5.04 in.)
Valve Stem Tip Height
Intake (valve tip to spring
seat washer)48.1±49.7 mm
(1.89±1.95 in.)
Exhaust (valve tip to
spring seat washer)48.53±50.09 mm
(1.91±1.97 in.)
Valve Stem Diameter
Intake (Standard) 6.935±6.953 mm
(0.2730±0.2737 in.)
Exhaust (Standard) 6.906±6.924 mm
(0.2718±0.2725 in.)
Valve Stem to Guide Clearance
Intake 0.025±0.065 mm
(0.001±0.0025 in.)
Max. Allowable (Rocking
Method)0.247 mm
(0.010 in.)
Exhaust 0.059±0.094 mm
(0.002±0.0037 in.)
Max. Allowable (Rocking
Method)0.414 mm
(0.016 in.)
Push Rods
Length 135.438 mm
(5.33 in.)
Valve Springs
Free Length (Approx.) 51.4 mm
(2.02 in.)DESCRIPTION SPECIFICATION
Wire Diameter 3.95±4.77 mm
(0.15±0.19 in.)
Number of Coils 7.52
Spring Tension (Valve
Closed)376.4±424.4 N @ 41.9
mm
(84.6±95.6 lbs. @ 1.65
in.)
Installed Height 41.1±42.7 mm
(1.61±1.68 in.)
Oil Pump
Clearance Over
RotorsÐInner and Outer
(Max.)0.10 mm
(0.004 in.)
Cover Out-of-Flat (Max.) 0.025 mm
(0.001 in.)
Inner Rotor Thickness
(Min.)7.64 mm
(0.301 in.)
Outer Rotor Thickness
(Min.)7.64 mm
(0.301 in.)
Outer Rotor Clearance
(Max.)0.039 mm
(0.015 in.)
Outer Rotor Diameter
(Min.)79.95 mm
(3.148 in.)
Tip Clearance Between
Rotors (Max.)0.20 mm
(0.008 in.)
Oil Pressure
At Curb Idle Speed*
(Minimum with engine at
operating temerature)34.47 kPa
(5 psi)
At 3000 rpm 205±551 kPa
(30±80 psi)
Oil Filter By-pas Valve
Setting62±103 kPa
(9±15 psi)
Oil Pressure Switch
Actuating Pressure14±28 kPa
(2±4 psi)
caution:
*If pressure is ZERO at curb idle, DO NOT run
engine at 3000 rpm.
RSENGINE 3.3/3.8L9-89
SPECIFICATIONS (Continued)
ProCarManuals.com

(2) Measure the concentricity of valve seat using
dial indicator (Fig. 29). Total runout should not
exceed 0.051 mm (0.002 in.) total indicator reading.
(3) Inspect the valve seat using Prussian blue to
determine where the valve contacts the seat. To do
this, coat valve seatLIGHTLYwith Prussian blue
then set valve in place. Rotate the valve with light
pressure. If the blue is transferred to the center of
valve face, contact is satisfactory. If the blue is trans-
ferred to top edge of valve face, lower valve seat with
a 15 degree stone. If the blue is transferred to the
bottom edge of valve face raise valve seat with a 65
degrees stone.
NOTE: Valve seats which are worn or burned can
be reworked, provided that correct angle and seat
width are maintained. Otherwise cylinder head must
be replaced.
(4) When seat is properly positioned the width of
intake and exhaust seats should be 1.50±2.00 mm
(0.059±0.078 in.) (Fig. 26).
(5) After grinding the valve seats or faces, install
the valve in cylinder head and check valve installed
height by measuring from valve tip to spring seat
(Fig. 30). Remove valve from cylinder head and grind
valve tip until within specifications. Check valve tip
for scoring. The tip chamfer should be reground (if
necessary) to prevent seal damage when the valve is
installed.
(6) Check the valve spring installed height after
refacing the valve and seat (Fig. 30).If valves
and/or seats are reground, measure the
installed height of springs (Fig. 30), make sure
measurements are taken from top of spring
seat to the bottom surface of spring retainer. If
height is greater than specifications, install a0.794 mm (0.0312 in.) spacer in head counter-
bore to bring spring height back within specifi-
cations.
REMOVAL
(1) With cylinder head removed, compress valve
springs using Valve Spring Compressor Tool
C-3422-B with adapter 6412.
(2) Remove valve retaining locks, valve spring
retainers, valve stem seals and valve springs.
(3) Before removing valves,remove any burrs
from valve stem lock grooves to prevent dam-
age to the valve guides.Identify valves to insure
installation in original location.
CLEANING
(1) Clean all valves thoroughly and discard
burned, warped and cracked valves.
INSPECTION
VALVES
(1) Clean and inspect valves thoroughly. Replace
burned, warped and cracked valves.
(2) Measure valve stems for wear (Fig. 31). For
valve specifications, (Refer to 9 - ENGINE - SPECI-
FICATIONS).
NOTE: Valve stems are chrome plated and should
not be polished (Fig. 31).
Fig. 29 Measurement of Valve Seat Runout
1 - DIAL INDICATOR
Fig. 30 Checking Valve and Spring Installed Height
1 - SPRING RETAINER
2 - VALVE INSTALLED HEIGHT* - 48.1±49.7 mm (1.89±1.95 in.)
3 - CYINDER HEAD SURFACE
4 - SPRING INSTALLED HEIGHT* - 41.1±42.7 mm (1.61±1.68 in.)
*(MEASURED FROM TOP OF SPRING SEAT)
9 - 100 ENGINE 3.3/3.8LRS
INTAKE/EXHAUST VALVES & SEATS (Continued)
ProCarManuals.com

(8) Locate the forcing screw and spring retainer
adapter assembly over the spring requiring removal
(Fig. 36).
(9) Slowly turn the forcing screw clockwise (com-
pressing the valve spring) until the valve keepers can
be removed.
(10) Turn forcing screw counterclockwise to relieve
spring tension. Remove retainer and valve spring.
(11) Repeat procedure for each cylinder requiring
valve spring removal.
INSPECTION
Whenever valves have been removed for inspection,
reconditioning or replacement, valve springs should
be tested (Fig. 37).As an example;the compression
length of a spring to be tested is 38.00 mm (1.496
in.). Turn the table of Tool C-647 until surface is in
line with the 38.00 mm (1.496 in.) mark on the
threaded stud and the zero mark on the front. Place
spring over stud on the table and lift compressing
lever to set tone device. Pull on torque wrench until
ping is heard. Take reading on torque wrench at this
instant. Multiply this reading by two. This will give
the spring load at test length. Fractional measure-
ments are indicated on the table for finer adjust-
ments. Refer to Engine Specifications to obtain
specified height and allowable tensions (Refer to 9 -
ENGINE - SPECIFICATIONS). Replace any springs
that do not meet specifications.
INSTALLATION - CYLINDER HEAD OFF
(1) If removed, install a new valve stem seal.
(Refer to 9 - ENGINE/CYLINDER HEAD/VALVE
STEM SEALS - INSTALLATION)
(2) Position valve spring and retainer on spring
seat.(3) Using Special Tool C-3422-C with 8464 Adapter
(Fig. 35), compress the spring only enough to install
the valve retainer locks.
(4) Slowly release the spring tension. Ensure the
retainer locks are seated properly.
INSTALLATION - CYLINDER HEAD ON
(1)The intake valve stem seals should be pushed
firmly and squarely over the valve guide using the
valve stem as guide.Do Not Force
seal against top of
guide. When installing the valve retainer locks, com-
press the springonly enoughto install the locks.
CAUTION: Do not pinch seal between retainer and
top of valve guide.
(2) Follow the same procedure on the remaining 5
cylinders using the firing sequence 1-2-3-4-5-6.Make
sure piston in cylinder is at TDC on the valve
spring that is being covered.
(3) Remove spark plug adapter tool.
(4) Install rocker arms and shaft assembly. (Refer
to 9 - ENGINE/CYLINDER HEAD/ROCKER ARMS -
INSTALLATION)
(5) Install cylinder head covers. (Refer to 9 -
ENGINE/CYLINDER HEAD/CYLINDER HEAD
COVER(S) - INSTALLATION)
(6) Install spark plugs and connect wires.
(7) Connect negative cable to battery.
ROCKER ARMS
DESCRIPTION - ROCKER ARMS
The rocker arms are installed on the rocker arm
shaft. The rocker arms and shaft assembly is attached
to the cylinder head with seven bolts and retainers.
The rocker arms are made of stamped steel.
Fig. 36 VALVE SPRING - REMOVE/INSTALL (HEAD ON)
1 - SPECIAL TOOL 8453
2 - BOLTS - SPECIAL TOOL ATTACHING
3 - AIR SUPPLY HOSE ADAPTER
Fig. 37 TESTING VALVE SPRING
1 - SPECIAL TOOL C-647
RSENGINE 3.3/3.8L9 - 103
VALVE SPRINGS (Continued)
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