1990 MITSUBISHI ECLIPSE Service Manual

FRONT SUSPENSION- Lower Arm / Stabilizer2-7
LOWER ARM
ROZGAAAThe lower arm is an A-type arm, and is connected,
via a rubber bushing, to the crossmember.
The rod bushing is optimum tuned, including the
spring constant of the arm bushing, to provideand “hard” characteristics relative to the left and
right, so that road surface impacts during travel are
alleviated, and also so that changes of alignment
caused by lateral forces are reduced, thus assuring
“soft” characteristics relative to the front and rear
excellent
I driving stability.
Arm bushing
,m
Rod bushing
STABILIZERROZHAABThe stabilizer mounting uses
*pillow balls. The
adoption of a stabilizer link with a pillow ball on each
end increases the link stiffness and ensures the
effective operation of the stabilizer bar even when asmall rolling motion occurs,
NOTE* Pillow ball: Ball joint not preloaded.
Pillow ballStabilizer bar
12AOOOS
4--

2-8FRONT SUSPENSION - Front Axle
FRONT AXLEROPKAAAThe drive shaft is of the Bit-field joint
(B.J.)-tripodjoint
(T.J.) type. This type features high power
transmission efficiency and low vibration and noise.The knuckle has the wheel bearing assembled
a@the hub press-fitted. The drive shaft and hub are
spline-coupled.
T.J.: Tripod Joint
B.J.: Birfield Joint
Hub
DRIVE SHAFT
B.J.-T.J. constant velocity joint combination main-
tains speed completely even when flexed, can
withstand heavy loads and shock and offer high
power transmission efficiency. Their special fea-
tures are outlined below.
B.J.T.J.l Axially
slidablel Smaller sliding resistance
0 Large operating angle
l Compact size and decreased space
require-
me&Taking these characteristics into account, B.J. is
adopted on the wheel side of the shaft, as it can
make large deflections when the tire is steered and
T.J. is adopted on the transmission side, as it can
slide
axiallv to absorb the chanae in the distance
between joints caused by
motionWof the suspension.
B.J.T.J.
llA0123

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

3-1
REAR
.L..,,....

-.-...- ..v:T
3-2REAR AXLE- General Information
GENERAL INFORMATION
RO3BAAAThe differential carrier and axle housing have been
separated from each other, and D.O.J. and B.J.
drive shafts arranged in between, They are driven by
the axle shaft.
The axle shaft is supported by ball bearings (innerand outer) in the axle housing and are coupled with
the drive shaft with the companion flange in*
between.
The front of the rear suspension, and the rear
side of
the differential carrier is mounted via the differential
support member to the body.CONSTRUCTION DIAGRAM
Differential carrier
A Crossmember
Differential support member
12AO616
llA0339

SPECIFICATIONSMEHM
nnlL -ueneral mrormationJ-JItemsConventional
differentialViscous coupling type
limited slip defferential
(option)Axle shaft
TypeSemi-floating type
Shaft dimensions
Outer bearing portion dia.
mm (in.)35 (1.38)
Inner bearing portion dia.mm (in.)28t1.10)
Center portion dia.
mm (in.)34.5 (1.36)
Overall lengthmm (in.)
214.9 (8.46)Bearing
O.D. x I.D.
Outer
mm (in.)
72 x 35 (2.83 x 1.38)
Innermm (in.)
58x28(2.28x 1.10)Drive shaft
Joint type
Outer
D.O.J.
Inner
B.J.Length (joint to joint)
x diameter
mm (in.) 397 x 24 (15.6 x .94)Differential
Reduction gear type
Hypoid gearReduction ratio
3.545Differential gear type and configuration
Side gear
Straight bevel gear x 2
Pinion gear
Straight bevel gear x
2Number of teeth
Drive gear
39Drive pinion
11
Side gear14
Pinion gear10
BearingO.D.
x I.D.
Side mm (in.)72 x 35 (2.83 x 1.38)
Frontmm (in.)
62 x
25 (2.44 x .98)
Rearmm (in.)
72 x 35 (2.83 x 1.38)NoteSemi-floating type
35f1.38)28t1.10)
34.5 (1.36)
214.9 (8.46)
72
x 35 (2.83 x 1.38)
58x28(2.28x1.10)
D.O.J.
B.J.397 x 24 (15.6 x
.94)
Hypoid gear
3.545Straight bevel gear x
2”Straight bevel gear x 4
39
11
16
10
72 x 35 (2.83 x 1.38)
62
x 25 (2.44 x .98)
72 x 35 (2.83 x 1.38)
*: Denotes the gear (L.H.) which. is in a single body with the viscous coupling.
i

3-4REAR AXLE - Axle Shaft / Drive Shaft
AXLE SHAFT
R03cAAAThe axle shaft is a semi-floating type supported by
ball bearings (outer and inner) in the housing.To prevent mud that may be deposited around the
bearing (outer), a dust cover has been provided.
D.O.J.
Companion flangeIG ?ust cover
Trailing arm
IllA0013
DRIVE SHAFTBirfield type constant velocity ball joints have been
provided for the drive shaft.
On the axle shaft side, the D.O.J. type has been
adopted to absorb the change in distance between
the joints that may be caused by the movement of
the suspension.
On the differential carrier side, the B.J. type has
been adopted which allows considerable flection in
keeping with the movement of the suspension.
Drive shaft and B.J.RO3OAAAOn the axle shaft side, they are coupled with the
axle shaft with the companion flange in between.
On the differential side, they are spline coupled with
the side gears.
On vehicles with a viscous coupling type limited slip
differential, the right and left drive shafts are
different in length. In addition, the B.J. side of the
drive shaft (R.H.) is two-stage serration coupled.
D.O.J. Boot
_vehicles)
D.O.J. Outer race
D&e shaft (R.H.)two-sta e serration(ECLIPS!: Viscous coupling type
limited slip differential equipped
D.O.J. Inner I
llA0338

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.-