1990 MITSUBISHI ECLIPSE service

SAFETY NOTICE
CAUTIONALL SERVICE AND REBUILDING INSTRUCTIONS CONTAINED HEREIN ARE
APPLICABLE TO, AND FOR THE CONVENIENCE OF, THE AUTOMOTIVE
TRADE ONLY. All test and repair procedures on components or assemblies in
non-automotive applications should be repaired in accordance with instructions
supplied by the manufacturer of the total product.
Proper service and repair is important to the safe, reliable, operation of all motor vehicles.
The service procedures recommended and described in this publication were developedfor professional
servlTe personnel and are effective methods for performing vehicle
repair.Following these procedures will help assure efficient economical vehicleperformance
and service reliability. Some of these service procedures require the use of
special tools designed for specific procedures. These special tools should be used when
recommended throughout this publication.
Special attention should be exercised when working with spring or tension loaded
fasteners and devices such as E-Clips, Circlips, Snap rings, etc., as careless removal
may cause personal injury. Always wear safety goggles whenever working on
vehicles or vehicle components.
7
It is important to note that this publication contains various Cautions and Warnings.These
should be carefully read in order to minimize the risk of personal injury, or thepossibility
that, improper service methods may damage the vehicle or render it unsafe.It
is important to note that these Cautions and Warnings cover only the situations and
procedures Chrysler Motors has encountered and recommended. Chrysler Motors couldnot possibly know,
evaluate, and advise the service trade of all conceivable ways thatservice
may *be performed, or of the possible hazards of each. Consequently, ChryslerMotors
has not undertaken any such broad service review. Accordingly, anyone who
uses a service procedure, or tool, that is not recommended in this publication, must assure
oneself thoroughly that neither personal safety, nor vehicle safety, be jeopardized bythe service
methods they select.
WE SrjPPORT
VOLUNTARY TECHNICIAN
CERTIFICATION
THROUGH

._._ -_- 1 -.
MODEL INDICATIONS
The following abbreviations are used in this manual for classification of model types.\
M/T: Indicates the manual transaxle, or models equipped ‘with the manual t\
ransaxle.
A/T: Indicates the automatic transaxle, or models equipped with the automatic\
transaxle.
MPI: Indicates the multi-point injection, or engines equipped with the multi-\
point injection.
DOHC: Indicates an engine with the double overhead camshaft, or a model equipp\
ed with such an engine,
Turbo: Indicates an engine with turbocharger, or a model equipped with such an \
engine.
2WD: Indicates the front wheel-drive vehicles.
4WD: Indicates the 4 wheel-drive vehicles.
HOW TO READ A CIRCUIT DIAGRAM
initionkey positions “ACC” ” N” and8“ST” is shown combined.
~
Service Manual.
o&ficates that current flows
Input
1 Indicates power1supply connection.
A : Female connector9.1 Male connector
\ Il-4’
Input Output output
is..used as an intermediate connec-

GENERAL - Technical Featureso-5ENGINE
The engines are the transverse-mounted engine
especially for front-engine/front-wheeldrive orfront-engine/4-wheel drive models, the
2.OL DOHC
16-valve engine with high-performance, silent-
operation,low-vibration,low-noise,low-fuel-
consumption features, an engine that fully displays
the most
up-todate engine technology.
SPECIFICATIONS
Engine model
Displacement
cc (cu.in.1
h$xo$put (SAE net)Max. torque (SAE net)
ft.Ibs./rpm
4G63Non-Turbo1997(122)135/6000125/5000
4663Turbo1997(122)195/6000203/3000
FEATURESHigh performance and low fuel consumption
l The rocker arm reduces the valve-actuation torque as well as fuel consumption.
l Air-intake efficiency improved through the adoption of the optimum air-intake system layout.
l Improved response and fuel consumption has been achieved by electronic control multipoint
fuel injection.
l Water-cooled turbocharger.
Quiet operation
l Noise and vibration have been decreased by the adoption of roller rocker arms.
l Noise generated by the valve mechanism has been decreased by the hydraulic auto lash adjusters.
l Vibrations have been decreased by the adoption of bearing caps with beams which increase the
rigidity of the crankshaft support points.
-Serviceability
l Complete self-diagnosis functions.
l Enhanced reliability through the adoption of gold-plated connector terminals.
l Use of an auto tensioner achieves maintenance-free, automatic adjustment of timing belt
tension.
l Use of the auto lash adjusters achieves maintenance-free, automatic adjustment of valve clearance
.o The 2coil ignition system without a distributor supplies sufficient ignition energy even during
high speed operation.

FRONT SUSPENSION - Front Axle2-9
HUB AND KNUCKLEThe construction of the hub and knuckle consists of
The wheel bearing is the double-row,
angular-the wheel bearing assembled to the knuckle and the
contact ball bearing type to withstand the lateral
hub pressed in; the drive shaft and hub are coupled
(thrust) load. The installation of the brake disc and
by
&rations.hub are the outer disc configuration, thus improving
serviceability and also reducing rotation unbalance.
Wheel bearing
Oil seal
HubDust shi&d
II I
IllA0053
Oil seal/HubBraie
disc
11 A0295
..~ -- . ..- - . .._ ~._ __.- ----_ .__

REAR AXLE- Viscous Coupling Type Limited Slip Differential3-a
DIFFERENTIALROlEAM
The differential uses lower torque bearings and
lower torque oil seals to improve power perform-
ante and fuel consumption.
For faster differential cooling and higher reliability
during high speed operation, a differential carrier
with cooling fins has been adopted.For better serviceability, spacers for adjustment of
final drive gear backlash have been inserted
be-tween the side bearing outer race and gear carrier.
A speed difference responsive type viscous
cou-
pling type limited slip differential which provides
outstandingperformance during operationon a
Side gearPinion gearDifferential coverQ./\Side bearing spaceifferential case
VISCOUS COUPLING TYPE LIMITED SLIP DIFFERENTIALRWEBAAWhile the conventional mechanical type limited slip
differential uses a cam (differential pinion shaft) and
disc equipment
compo.sed of a friction plate, disc
and spring seat in limiting the differential, theviscous coupling type limited slip differential limits
the differential by use of a viscous coupling equip-
ment consisting of outer and inner plates and
silicone oil.
Front wheel
Center differential
’ (viscous coupling)Rear wheel
Limited slip differential
assembly
Front differential, I
TDifferential
Differential limiting section
(viscous coupling)11KmI66
L.-

BRAKES - Service Brakes 5-3
$eTandem (with level sensor)
(718)
Brake boosterTYpeEffective dia. of
y3tt$;ivacuum-boost type
powmermc&;der
Proportioning valve Type Dual type
(597)
kPa (psi)
Decompression 0. 3
(15/l 6)
Multiple-vacuum-boost type
c
4,200 (597)
TypeM-R44VM-R44V
cyhnxLy.53.9 (2’/8) 53.9 (2%)
Clearance Automatic Automati
c
I
TypeAD30PAD30P
Cyl~itl;.~. 30.1 (13/16) 30.1 (13/16)
Clearance Automatic Automatic
*:4WD
X
ARRANGEMENT OF BRAKE LINES

7-.
BRAKES - Service Brakes5-5
REAR DISC BRAKE‘he rear brake is the
AD30P type, featuring highly
tifficient heat dissipation, quick recovery of braking
force when wet, and highly stabilized braking force.The brake system incorporates an auto adjuster that
automatically adjusts the clearance between the
pad and brake disc when
t.he brake pedal is
depressed.
<2WD>
Brake disc
Parking brake cable
Section A-A
&
u
Pad
<4WD>I-
14A0003
Brake discParking brakecable
/
Pad14A0122
brake
brakPiston seal Piston
Piston boot
\
brakeAuto
AdjusterspindleRet&n spring14AOOO2
Section B-B
Piston sealConnecting link
Piston boot
\\PistonI
/
Parking
brakelever
/Spring
/
/Return spring
Shaft14A0123Auto adjuster spindle

5-6BRAKES - Service Brakes
In addition, disc removal and installation is made
easy by the outer disc system, in which the brakedisc and the disc wheel are installed to the hub
bvthe hub nuts.
Brake disc installation cross-section<2WD>
<4WD>
Hub nuts
Brake disc14AO390Hubnuts
Brake&c
14AO622