brake MITSUBISHI ECLIPSE 1990 Service Manual

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PreViOUSlVmanufactured.a *-a- .I._..-1-L,.* _____ #Q ^_^__ l L.-Orintul in U.S.A.
GROUP INDEXROSA. - -
General. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. . . . . . . . . . . . . . . . . .
Front Suspensio n................................
.
Brakes - Eir$rii. . . . . . . . . . . . . . . . . . . . . . . . . . ..s...
Clutch. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Cooling. . . . . . :. . . . .. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Electrical. . . . . . . . . . . . . . . . . . . . . . . . . . . ..-..................
Engine....................................................
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Propeller Shaft and Universal. . . . . . . .
ml
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Power steeringCD
ManualTransaxl e - Automatic....................
m
Bodym
Heaters and Air ConditioningRI
A
Emission Control Systems

o-4GENERAL - Technical Features
BASIC CONSTRUCTION
The 4WD vehicles are equipped with
2.OL DOHC
16-valve turbocharged engine and incorporate new
technologies such as full time 4WD of center
differential type with viscous coupling differential
limiting for excellent running stability and excellent
Steering
l Light weight and compact rack and pinion
type for high steering response
l Tilt steering mechanism to give optimum
driving position
\driving across bad roads, and $-wheel independent
suspension for comfortable riding.
Adopted on
2WD vehicles are 2.OL DOHC 16-valveengine, MacPherson strut type front suspension
and torsion axle
typ.e 3-link rear suspension.
Rear suspension
l Self-aligning double wishbone type suspen-
sion for comfortable ride
(4WD)l Torsion axle type 3 link suspension for
outstanding driving stability
(2WD)l Negative chamber for outstanding steer-
ability during high speed driving
0 Anti-lift geometry for high stability duringbraking
lIntegral torsional bar type axle beam for
optimum roll stiffness (2WD)
\Front propeller shaft (3-piece
4-joint type)
lRobro joint to absorb lengthwise and angular
change and prevent transmission of vibrations.
(4WD)
IFront suspension
The front suspension of McPherson strut type
independent suspension system
l Under steer geometry for outstanding steering
stability
l Negative offset geometry for outstanding
stabil-ity at braking
0 Offset coil springs for comfortable ride
Brakes
l Cross piping dual type proportioning valvethat keeps balanced braking power even at
failure of the hydraulic system.
l Four wheel disc brake system for high
braking power.

o-14GENERAL - General Data and Specifications
tiems
Chassis
TireFront suspension
Type
Rear suspensionType
Brake
TypeFront
RearSteering
Gear type
Gear ratio
Fuel tankCapacity liters (gals.)
P205/55HR16 or
205l55VR 16Independent strut
3-Link
Torsion axleDisc
Disc
Rack and pinion
m
60 (16)
P205/55VR 16 or205155VR16Independent strut
3-Link
Torsion axleDisc
Disc
Rack and pinion
00
60 (16)
P205155VR16 or205155VR16Independent strut
Double wishbone
Disc
Disc
Rack and pinion
co
60 (16)ENGINE SPECIFICATIONS
Items
TypeNumber of cylinders
Boremm (in.)Stroke
mm (in.)Piston displacement
Compression ratio
Firing order
cm3 (cu.in.)
4G63 (2.OL) Non-Turbo1 4663 (2.OL) Turbo
In-line DOHC~ In-line DOHC
4‘4
85.0 (3.35)
85.0 (3.35)
88.0 (3.46)88.0 (3.46)
1,997 (122)
1,997 (122)
9.0
7.8l-3-4-2l-3-4-2
TRANSAXLE SPECIFICATIONS
Items
Type
Gear ratioTransfer ratio
gearFinal drive ratio
gear
1st
2nd
3rd4th5th
ReverseF5M22F5M33
W5M33F4A22
5-speed M/T5-speed M/T&speed ArF4-speed AiT
3.3633.038
3.0832.846
1.9471.8331.6841.581
1.2851.2171.1151 .ooo0.9390.8880.8330.686
0.756
0.7410.666
3.0833.166
’3.1662.176
-1.090
3.9413.4373.8663.562

FRONT SUSPENSION - Anti-dive Geometry / Negative-offset Geometry2-5ANTI-DIVE GEOMETRY
RO2cAAAOrdinarily, when the brakes are applied, the load is moved
toward the front of the vehicle as the result of inertial force, and
this causes the phenomenon known as “nose dive”, in which
the front of the vehicle is caused to tilt forward and downward.
For this front suspension, however, the suspension link design
-which has a high
“anti-dive” effect- is such that the lower
arm is tilted forward in order to counteract the “nose dive”
phenomenon.
In other words, braking force
F is divided into force compo-
nents
F, and F2; of these, F1 acts in the direction that expands
the front spring, with an effect that reduces the “nose dive”
phenomenon.
NEGATIVE-OFFSET GEOMETRY
AOZDAAAFor negative-offset geometry. the king pin offset
angle is outside the center point of tire-to-ground
contact. Thus, for example, if a tire on the right side
is punctured during driving, or if the brakes are
applied while the left tires are on a slippery surface
(ice, etc.), the vehicle would be inclined to swerve to
the side (in this case the right side) of greater road
surface resistance to the tires, but, because of the
negative-offset geometry construction, a certain
force would be generated to cause rotation in
direction C, employing point A as the fulcrum point.
At the same time, there would be generated at the
tires on the opposite side a corresponding force to
cause rotation in direction D, also employing point A
as the fulcrum point, but, because that force is
Centreooint of strutPatigreater in direction
C (where road surface resistance
is greater), the tires themselves will tend to turn in
the left direction. As a result,. because
t.he tires
automatically countersteer in the left direction, even
though the force applied to the vehicle by the road
surface resistance is to the right, the system thus
functions to maintain the vehicle on a relatively
straight-ahead course.
NOTEThe king pin offset is the distance from the center
point of tire-to-ground contact when a line (ex-
tended to the road surface) is drawn to connect the
ball joint center point and the center point of the
strut upper installation part.
Point AIcy surface
12AO548
Ball jointLcentre point t
Directionof travel
Direction
of tire
4--
Direction ofmovement tendency>f;’*Jvehicle move-:’
”ment tendency,
12AOO30

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
..~ -- . ..- - . .._ ~._ __.- ----_ .__

BRAKES
CONTENTS

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

5-4
Braki disc 14A0531
Section A-A
14AO530
,ad Shim
014A0532

Disc wheel
.

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