7 - suspension, wheels [ocr]

8/10/2019 7 - Suspension, Wheels [OCR]

1/88

aab SERVICE M NU

7 Suspension wheels

M 1979


2/88


3/88

Technical data 27

Special tools 7

Technical description 7

Saab ront suspension 7

Rear suspension 732

SERVICEHubs 774

MANUAL

7 Suspension wheelsM 1979 1991


4/88

Units

he basic and der ived uni ts used throughou t the Service Manual are inaccordance with the SI system.

For users no t familiar with the SI units, some non-Continental units aregiven in bracke1s after the respective 51 un i t

The following symbols and abbreviations are used:

unit

mm

kgN m

barI Ii1erC

onversion factors1 in = 25 4 mml i = 0 45 kgll = 4 45 N1 Ibf ft = 1 36 Nm1 psi = 0 07 bar1 US liq qt = 0 83 UKqt

Market codes

quivalent unit andsymbolinch in)pound Ibpound-force Obfpound-force foot Ibf ft)pound-force per square inch Ibfi in 2 Also abbreviated: psO

US liquid quart Iiq q t) Also abbreviated: qts)US g al lo n US gal)

1 mm = 0 039 in1 kg = 22 0 Ib1 N = 0.23 Ibf1 m = 0 74 Ibf ft1 bar = 14 5 Ibf/in21 I = 1 05 Iiq qt1 US g al = 0 83 U K g alC = r F 3 2 x5 19

The codes refer to market specifications

TAUBECACHDEDKESEUFEFIFR

Saab Au1Dmobile AB 1991

AustriaAustraliaBelgiumCanadaSwitzerlandGermanyDenmarkSpainEurope

Far EastFinlandFrance

GBGRISITJPMENL OSEUCUS

Great BritainGreeceIcelandItalyJapanMiddle EastNetherlandsNorwaySwedenUS CaliforniaUSA

Production: Technical Publications, Saab Au1Dmobile AB, Trollllatlan, Sweden


5/88

Technical data

echnical data uspensionTo ensure that .the car is the same height at bothsides, springs on the same axle should have thesame colour coding, whenever possible.

This colour coding, which is based on the springfree-length tolerance, does not apply to rear springson the standard chassis.

Front coil springsStandard chassis M81 85

027-1

I

Total no. of turns

Wire diameter

Free length

Colour coding, c1ass1

class 2

mm in

mm in

8Y 8Y

14.4 0.57 14.4 0.57

373 14.7 380 15.0

Green Yellow

Light green Red

8Y

14.4 0.57

388 15.3

Pink

Brown

Standard chassis M86 onwardsTotal no. of turns

Wire diameter

Free length

Colour coding, class 1

class 2

mm in

mm in

14.4 0.57 14.2 0.56

373 14.7 373 14.7

Green Black

Light green White

8Y

14.0 0.55

372 14.6

Blue

Light blue

Special chassis Sports chassis

Total no. of turns 8Y 8Y 61h

Wire diameter mm in 14.4 0.57 14.4 0.57 15 . 9 62 Free length mm in 380 15.0 388 15.3 301 n.8

Colour coding, class 1 Yellow Pink Silver

class 2 Red Brown Bronze

Saab


6/88

Special chassis* Sports chassisTotal no. of turns 9 9

Wire diameter m m in 14.8 0.58 15 0.59 15.8 (0.62)Free length m m in 333 13.1 317 12.5 293 (11.5)Colour coding, class 1 Yellow Pink Silver

class 2 Red Brown Bronze

027-2 Technical data

Rear coil springs

Total no. of turnsWire diameter

Free lengthColour coding, class 1

Total no. of turnsWire diameterFree lengthColour coding, class 2

is applies to police cars and cars to spec.

Whee:ls

Maximum out-of-roundMaximum runout

M79 87

Wheel bolts M88 onwards)Locating stud M88 onwards)

m m in

mm in

mm inm m in

mm in

m m in

S a ~ J j9

Standard chassisLeft Right

15 (0.59) 14.8 0.58

311 12.7 308 12.6Black Green

Standard chassis

Left Right

15 0.59 14.8 0.57311 12.7 308 12.6White Light green

Steel

1.0 0.04

1.0 0.04

h-inch 20 UNFM1 4 x 1.5M8

Alloy

0.5 (0.02)

0.5 (0.02)


7/88

. Tightening torques

Technical data 27 3

IHub centre-nut, front (pre-M81) Nm (Ibf f t) 340-360 (251-266)Hub centre-nut, front (M81-87) Nm (Ibf ft) 290-310 (214-229)Hub centre-nut, rear (27 mm across S ta ge 1: 49 36flats) . . Stage 2: slacken nut completely

Nm (Ibf f t) Stage 3: 2-4 (1.5-3.0)

Hub centre nl,lt, rear (32 mm acrossflats) Nm (Ibf ft) 290-31 0 (214-229)

Wheel nuts (pre-M88) Nm (Ibf ft) 90-110 (66-88)

Wheel bolts (M88 onwards) Nm (Ibf ft) 105-125 (77-92)

Locating stud (M88 onwards) Nm (Ibf ft) 25-30 (18-22)

R ear-wheel geometry Car unladen) o ~ i n(M79-84)

(M84 onwards)

mm

mm

4 2 Le. setting of between 1 /3 mm oneither side)

4 1 Le. setting of between 1 /3 mm on.either side)

Camber

,, . \

Degrees

Saab 900

;


8/88

027-4 Technical data

Recommended tyre pressures cold tyresM81-89 n/a DE

Tyre size No. of Max cruising Front Rearoccupants speed

mph km/h bar psi bar psi175/70 R15 87T 1-3 0-120 0-190 2.1

2.2

5 2.3 2.4185/65 R15 87T 1-3 0-120 0-190 2.0

2.1

5 2.2 2.3195/65 R15 87H 1-3 0-130 0-210 2.0

2.1

5 2.4 2.5195/60 R15 86H 1-3 0-130 0-210 2.1 3 ~ 2.2 5 2.4 35 2.5195/60 VR15 1-3 0-130 0-210 2.1

~2.2

~95/60 R15 87/88V 1-3 >1 30 >2 10 2.4 2.54 5 2.4 2.5

. Convertible185/65 R15 87T5 1 2 0-120 0-190 2.0

2.1

4 2.2 2.3185/65 R15 87H 1 2 0-120 0-190 2.0

2.1

4 2.4 2.5195/60 R15 86/87H 1 2 0-130 0-210 2.1

2.2

4 2.4 2.5195/60 VR15 1 2 0-130 0-210 2.1

~ ~2.3

l ~ ~ l 2 >130 >210 2.4 2.53 4 2.4 2.5

Spare wheelT115/70 01 5 max 50 80 4.2 60T115/70 R15

175/70 R15 max 50 80 2.6 38

Convertible165 R15 1-3 2.1 g ; ~ 2.2 5 2.3 2.5175/70 R15 1-3 2.3 2.4 5 2.4 2.5185/65 R15 1-3 2.2

2.3

5 2.3 2.4

Other tyre sizes195/50 VR16 1-3 0-130 0-210 2.3

l ~ i l2.4

l ~ ~ l95/50 ZR16 1-3 >1 30 >2 10 2.6 2.74 5 2.6 2.7

Saab 900

T h i l d t 027 5


9/88

Technical data 027-5

All ratingsAll ratingsV Z

HT

0-100 0-160 km/h)0-100 0-160 km/h)100 mph 160 km/h) to max speed100-130 mph 160-2W-.km/h)100-120 mph 160-190 km/h)

Max 3 occupantsMax loadMax loadMax loadMax load

lL2

L3L4

I spec. M onwards. DE spec. M onwards

LTyresize Loading class L) Front bar) Rear bar)175/70 R15 86T L1 2 1 2.2

2.3 2.4L5 2.4 2.5

185/65 R 15 8 7T 2.0 2 1L2 2.2 2.3L5 2.5 2.6

185/65 R15 87H L1 2.0 2 1L2 2.4 2.5L4 2.5 2.6

195/60 VR15 L1 2 1 2.2R1588V 2.4 2.5

L3 2.6 2.7

195/50 ZR16 2.4 2.5L2 2.6 2.7L3 2.9 3.0

175/70 R 15 8 6T M + S L1 2.3 2.4 Winter tyre) L 2.5 2.6

L5 2.6 2.7

185/65 R15 87T M + S L1 2.2 2.3 Winter tyre) L2 2.4 2.5

L5 2.5 2.6

l

Saab 900


10/88


11/88

1 7 2 Special tools


12/88

1 7 2 Special tools

S 8 7

8 9 9 6 6 Press spacer 89 95 6 Ball-joint separator Track-rod ends

Saab 9


13/88

700 2 Technical desqription


14/88

q p

Rear suspensionThe rear suspension comprises a rigid axle coil

springs and double acting dampers. The axle isflexibly mounted to the body by means of twospring links. The leading end of each link is an-chored to the body with the trailing end being at-tached to the axle by means rubber bushes.

Lateral forces are taken up by a Panhard rodmounted between the body and axle. Two torquearms which take up the torsional forces in the rearaxle are mounted one at either end of the axle be-tween the hub carriers and body.

Upward movement of the rear wheels is limited byrubber stops bolted to the body.

Downward movement of the rear wheels is limitedby the dampers. The dampers are attached bymeans of rubber bushesOto the body atthe top andto the spring link at the bottom.

To adjust the suspension to weight variations be-tween different model variants spacer rings andspring cups in varying thicknesses are available.See the appropriate parts fiche for further details.

Some model variants are equipped as standard withanti roll bars front and rear The front anti roll bar isattached to the floor pan under the engine bay andto the lower wishbone. The rear anti roll bar is at-tached direct to the spring links.

Saab

Technical description 700 3


15/88

I

r w

1 Hub centre nut Washer Hub4 Outboard drive shaft

5 Bearings and seals6 Constant velocity joint

u s

The outboard drive shaft and hub assembly is jour-nailed in a double row angular contact bearing inthe steering swivel member. The bearing is perma-nently lubricated and has integral seals.

The hu is splined to the outboard drive shaft andsecured y means of a centre nut which has a lock-ing tab that is upset in a groove in the shaft. A fullymetallic tab locknut is used as on M88.

The inboard end o the outboard drive shaft is con-nected to the intermediatedrive shaft via a constant-velocity joint.

The rear wheel hub on M7982 cars is mounted intwo taper roller bearings with the inboard bearinghaving a larger diameter than the outboard one. Aremovable s l is f itt ed between the hub and theshaft.

A double row angular contact bearing was intro-duced during MY82.

The bearing shaft seal and hub are removed andfitted as an assembly.

Saab 900


16/88

i

Front suspension 731-1


17/88

ro t susp ns on Coil springs 731 1 Dampers

Replacing the spring seat rubber bush 731 2 Anti-roll bar

oil sprin s

. 731-5

. 731-7

I o r mov1 Raise the car and remove the front wheel. Placea jack underneath the outboard end ofthe

lower wishbone t o relieve the load on thedamper.

Note

If necessary use a steel bar to lever out the lower

end of the damper. Lower the wishbone meansof the jack.

Remove the nutand washer from the lower fixing on the damper and remove the damper.

3 Fit spring compressor 88 18 791 with jaws88188 9

Saab 900

731 2 ro t suspension


18/88

4 Compress and remove the coil spring.

Replacing the spring seatrubber bush

WARNING

Suspension fix ings incorporating rubberbushes must only e t ightened when theweight of the car is on the wheels. Failure toobserve this can result in the bushes becom-ing distorted which can have n adverse ef-fect on the car s handling and shorten the lifeof the bushes.

1 Disconnect the spring seat from the topwishbone.

2 Press out the bush using special tool 8996274.

Saab 9

Front suspension 731-3


19/88

Lubricatethe new bush with Vaseline petroleum jelly and fit it using the special tool.

I

4 Refit the spring seat.

Note the position the stop.

o it

Note

Coil spring s are supp lied pretreated with anticorrosion agent. If the coating has been damaged.it should be touched up before the spring fitted.

Compress the spring and lift t into position withthe steel cone and rubber ring at the top .

Saab

731-4 Front suspension


20/88

Saab 900

Slacken the spring compressor enough to allowthe coil spring t o o pt its correct position.

Note

Po si ti on t he end o f t he sp ri ng a ga in st t he spr in gstop.

3 Undo the spring compressor and remove it.

4 Using the jack, l owe r th e end o f th e wi sh bo neslightly.

Lif t the damper into posit ion and fit the washerand nut the bottom mounting.

Tightening torque: 90-100 Nm 66-74 Ibf ft

Remove the jack.

5 Fit t he wheel a nd l ower th e car.

Tig hten in g torqu e, wheel n ut s: 90-110 Nm 66 81 Ibf ft

Tightening torque, wheel bolts: 105-125 Nm 78-92 Ibf ft

Front suspension 731 5


21/88

mpers

NoteThe dampers are a special design which incor-porates a stop. Genuine Saabdampers must there-

fore always be used. Ifdampers without the integralstop arefitted the front assembly may be damaged.

remove1 Raise the car s lightly to relieve the load on the

damper.

2 For better access to the L damper loosen thefixings for the coolant expansiontank and swivelit out the way

3 Remove the nuts washer and rubber bush fromthe upper damper mounting.

Use a thin flare nut ring sp ann er to stop thelower nut from turning.

Hint

Grind a flare nut ring spanner down to the requiredthickness.

If the damper rod turns cut away the protect ivesleeve and hold the rod by means a pairof p ipegrips.

4 Raise the carand remove the front wheel.

I

5 Remove the nut and washer f ro m the lowerdamper mounting and remove the damper.

If necessary use a steel rod to lever outthe bot-tom of the damper.

6 Compress the damper and remove it

Saab 900



22/88

o it

Lubricate the rubber bush for the lower dampermounting with Vaseline (petroleum jelly).

Note

Expel any air from the damper prior to fit ting.

2 Lift the fully retracted damper into posit ion andfit the washer and nut on the lower mount ing .

Tightenillg torque: 90-100 Nm (66-74 Ibf ft

3 Use a jack to raise the outboard end ofthe wishbone slightly.

Fit the rubber bush, washer and nuts on the topmounting.

Remove the jack.4 Refit the expansiontank (applies to replacement

of LH damper only).

5 Refi t the wheel and lower the car.

Tighten ing torque, wheel nuts: 90-110 Nm 66 81 Ibf ft)

Tightening torque, wheel bolts: 105-125 Nm(78-92 Ibf ft)

Saab 900

. . . . .. : : . ~

\ ~ . , ;

I; ~ .., j_ . .

.: \. ~ e

o ~ : .

.


23/88

7a1-fil Front s uspen-sion


24/88

s yftbolt the rack-and-pinion gear and move itto. watds the front.

6 Withdraw the anti-rol l bar turned so that theends are uppermost .

o it

With the ends uppermost, insertthe anti-roll bar,turn it a 3/4-turn backwards and down, and position it roughly centrally.

Saab 900

Front suspension 731 9


25/88

2 t: ubricate the rubber bushes in the outer mount-ings with MOLYCOTE 1 4382.

Fit the bushes and screw on the nuts leavingthem slack.

Lubricat e the r ubber bushes in the U clampswith MOLYCOTE 1 4382.

Fit the bushes on the anti roll bar with the openpart towards the front.

Fit the U clamps complete with shims and screwon the nuts leaving them slack.

.6~ ~ .

i ~ l p 4 Make sure the ant i rol l bar is correctly centredand tighten the nuts in the outer mountings.

I

5 Tighten the nuts on the U clamps on the floorpan.

Saab 900



26/88

6 Move the rack and pinion gear back into posi-tion nd tighten the bolts

7 Refit the wheels and lower the c r

Tightening torque wheel nuts: 90-110 Nm 66-81 Ibf t

Tightening torque wheel bolts: 105-125 Nm 78-92 Ibf t

8 Remove the special tools from under thewishbones

Saab 900


27/88

7 3 2 2 e r s u s p e n s io n


28/88

r o v

1 R ai s e th e c a r a n d re m o ve th e re a r wh e e ls 2 U n s c re w th e le a d t h ro u g h b ra c ke t fo r th e h a n d -

b ra ke c a b le fro m th e s p rin g link

C a rs w ith AS S b ra ke s :

R e le a s e th e w h e e l s e n so r le a d a t th e tw o c lip s

a n d fro m th e b ra c ke ts a t e ith e r e n d o f th e s p rin glin k Allo w th e s e n s o r le a d to h a ng fre e

3 P o s itio n a ja c k u n d e rn e a th th e s p rin g lin k to re -lie ve th e lo a d th e d a m p e r

R e m o ve th e n u t a n d b o lt in th e lo w e r d a m p e rm o u n tin g

Sa a b


29/88

732 4 Rear suspension

o it


30/88

Saab 900

o it

1 Place the coi l spr ing on the spr ing l ink.

2 Raise the spr ing l ink by means of the jack andcheck that the coil spring s correctly positioned.

Cars with anti roll bar:

Swivel up the anti roll bar.3 Fit the bol t and nut in the spr ing l ink rearmount-

ing.

o insert the bolt use a large pair of water pumppliers and a screwdriver to line up the holes.

Cars with anti roll bar:

Carry out the procedureon both sides of the car.

4 Using a screwdriverto centre the damper. fit thenut and bol t the lower damper mounting.

Remove th jack.


31/88

732-6 Rear suspension

3 Removethe jack and dismantlethe nuts, washer


32/88

and rubber bush from the top damper mounting.

4 Compress the mper and remove it.

fi t

NoteExpel any air from the damper prior to fitting.

1 Compress the new mper and put it in place.2 Fit the rubber bush, washer and nuts onthe to p

mo nting.3 Jack up the spring link.

Fit the nut and bolt in the lower d am permounting.

Remove the jack.

4 Fit t he wheel and lower the par.

Tighten ing torque, wheel nuts: 90-110 Nm 66 81 Ibf t

Tightening torque, wheel bolts: 105-125 Nm(78-92 Ibf t

Saab 900

pring links

ear suspension 732 7


33/88

pring links

o r mov1 Raise the car and remove the r r wheel2 Unscrew the lead through r ~ k e tfor the hand-

brake cable from the spring link

Cars with SS brakes:

Release the wheel sensor lead at the two clipsand from the brackets at eitherend of the springlink Allow the sensor lead to hang free

3 Position a jack underneath the spring link to re-lieve the load on the damper

Remove the nut and bol t in the lower dampermounting

Saab 900

4 Removethenut and boltfrom t spring link rear

e r suspension732 8


34/88

Saab 9

4 Removethenut and boltfrom spring link rearmounting

Co

Cars with anti roll bar:Both spring link rear mountings must beunbolted Swivel the anti roll bardown out of theway

5 Place a support underneath the rear axleto pre-v ent the brake hose from being s tre tched ordamaged and lower the spring link by means ofthe j k

Remove the coil spring


35/88

732 1 Rear suspension

Replacing the rubber bush


36/88

Saab 9

front spring link mounting

Note

Suspension fixings incorporating rubber bushes

must only betightened when the weight ofthe car ison the wheels. Failure to observe this can result inthe bushes becoming distorted, which can have anadverse effecton the car s handling and shorten thelife the bushes.

Disconnect the mounting complete with rubberbush from the spring link.

2 Place the mounting on a suitable base and pressout the rubber bush, using a sleeve applied tothe tube the bush.

3 Lubricatethe new bush with Vaseline petroleumjelly) and press it into the mounting.

4 Refit the mounting to the spring link.

Note o not tighten the bolt until the spring link ismounted on the body.

, Replacing the rubber bush i g li k ti g

Rear suspension 732


37/88

rear spring link mounting

Note

Suspension fixings incorporating rubber bushesmustonly be tightened when the weight ofthe car son the wheels. Failure to observe this can result nthe bushes becoming distorted, which can have nadverse effect on the car s handling and shorten thelife the bushes.

1 Press out the rubber bush using special tool89 96 74

2 Lubricatethe new bush with Vaseline petroleumjelly) and use the same tool to press it into themounting.

aab

I


38/88


39/88


40/88


41/88

774 2 Hubs

To remove

Fit the special spacertool 83 93 209 underthe


42/88

upper wishbone.

2 Loosen the hub centre-nut and wheel nuts before raising the car.

3 Raise the car and remove the wheel.4 Rotate the brake disc to bring one of the re

cesses in the edge the disc level with thecentre-line at the leading edge of the brakepads. Disconnect the handbrake cable and re-move the brake caliper. Tie back the brake caliper to avert .damage:to the brake hose:

5 Remove the hub and disc assembly from theshaft using puller 89 96 084 or 89 95 185 withthe four extension pieces 89 96 050 .

Saab 9

Hubs 774 3

6 Release the large clip on the rubber gaiter overthe inboard universal joint.


43/88

aabog

I7 Separate the t rack r od end from the st eer ing

arm and the ball joint on the upper wishboneusing tool 95 409. Unbolttheball joint on thelower wishbone.

1 Mount the steer ing swivel member in a pressand press out the outboard drive shaft.

2 Removethe circlip and press out the bearing us-ing a suitable drift.

8 Lifting thedrive shaft out through the wheel arch

remove the ent ire shaft assembly and clean i tthoroughly.

Note

When separating the inboard universal joint fit acover onto the end the rubber gaiter both to pre-vent the needle bearings from falling out and to pre-vent dirt from getting into the joint.

A cover should also be f it ted on the inboard drivercup.

ism ntle

NoteDo

not dismantle the bearing.

77 ubs

ssemble

Grease the bearing with MOLYCOTE G grease.


44/88

Press the front-wheel bearing into the steeringswivel ember using tool 89 96 068.

Fit the circlip.2 Place the outboard drive shaft in the press and

press the steering swivel member and bearingonto the shaft.

Press on the bearing inner race.

3 Pressthe hu and brake disc assembly onto thedrive-shaft splines and fit the thrust washer andcentrenut do not torque the nut yet .

4 I f the needle bearings in the inboard universaljoint haye been removed, lubricate them and fitthem onto the arms. Fit the cover to protect theneedle bearings when thedrive shaft is inserted.

5 Ensure that the driver cup o the inboard universal joint is clean and packed with new grease.

~ a b

774-5ubs

it1 Reconnect the inboard universal joint.2 Reconnect the ball joint securing the upper


45/88

Saab 900

I

6 Tighten the hub centre-nut to the specifiedtorque and lock it by upsetting the.collar in thegroove in the shaft.

Tightening torque or hub centre-nut:350 10 Nm 260 9 Ibf

WARNINGFor the brakes to operate properly the brakepads must be advanced to their normal position close to the disc. Do this by pumping thebrake pedal.

3 Reconnect the track-rod end to the steeringarm.

4 Fit the brake caliper and reconnect the handbrake cable.S Fit the wheel and lower the car.

Tightening torqu or wheel nuts: 90-110 Nm 66 81 Ibf

7 Check-tighten the wheel nuts.

2 Reconnect the ball joint securing the upperwishbone to the steering swivel member andbolt the lower one to the lower wishbone.

774 6 Hubs

Front-wheel hubs M81-87


46/88

Front-wheel hub MBt-B71 Centre nut2 Thrust washer3 Hub4 Outboard drive shaft5 Bearings and seals6 Constant velocity joint

To remove1 Fit the special spacer.tool 9 209 under the

upper wishbone.

S aa b

774 7ubs

2 Loosen the hub centre nut and wheel nuts be-fore raising the car

3 Raise the car and remove the wheel and hu b


47/88

Saab 900

I

7 Separate the track rod end from the steeringarm using tool 89 95 4 9

8 Undo the boltssecuring the ball joints on the up-per and lower wishbones Pull the steeringswivel member and hub assembly off the driveshaft and wishbones

6 Remove the brake disc

centre nut4 Line up one of the recesses in the edge the

brake disc to provide access to the brake padsand remove them

5 Remove the brake caliper Hang up the caliper

to avert damage to the brake pipe or hose

7 7 4 8 H u b s

o d i s m n t le

1 P re ss o ut the h ub us ing too ls 78 067 89 96 45 6 a nd 89 96 449


48/88

Us ing a u niver sa l puller p ull th e in n e r b ea ringo u t th e hu b. If the re a re no re ce ss es al low inga p ul ler to be us ed d rive th e b e ar ing o ut bym ea ns o f a co ld c h ise l.

N o te

P re ss ing th e hu b ou t th e st e e rin g s wive l m e m b erd a m a ge s the whe el be a ring wh ic h m u st th ere fo rebe re ne we d.

R em ov e th e c irc lip s fro m th e s te e rin g sw ivel m e m -b e r a n d p re ss o u t th e be ar ing . Us e to o ls 83 90 114 89 96 456 an d 89 96 44 9

S a a b

774 9ubs

Lubricate the bearing housing inside the steer-ing swivel member with MOLYCOTE G grease

assemble


49/88

I

Note how tool 89 96 464 should be positioned

Saab

Fitthe circlip in the groove in the inboard end the steering swivel member

2 Press the bearing up against the circlip in the

steering swivel member using tools 83 9 114and 89 96 464

774 1 Hubs

Fit the outer circlip4 Press the hub into the bearing using tools

83 9 114 and 89 96 46 4


50/88

Position tool 89 96 464 against the innerbearing

To fit

Apply MOLYCOTE

G grease to the splines andinsert the drive shaft into the hub

Refit the steering swivel member to the upperand lower wishbones

Saab

774 11ubs

Fit the hub centre nut and brake disc.


51/88

Saab 900

I

WARNING

For the brakes to operate properly the brakepads must be advanced their normal posi-tion close to the disc. Do this by pumping thebrake pedal.

7 Remove tool 83 93 209 from under the upperwishbone.

6 Tighten the hu b centre nutto atorque of 300 Nm 220 Ibf ft and secure it by upsetting the collar inthe groove in the shaft.

3 Fit the brake caliper and pads.4 Reconnect the track rod end to the steering

arm.

5 Fit the wheel and lower the car.

Tightening torque for wheel nuts: 90 110 Nm 66 81 Ibf

u s


52/88

41

Front wheel u M onwards1 Centre nut Thrust washer Hub4 Outboard drive shaft5 Bearings and seals6 Constant velocity joint

To remove

Fit the special spacertool 9 209 undert heupper wishbone.

Saab

774-13ubs

2 Loosen the hub centre-nut and wheel nuts before raising the car.

3 ise the ca r and remove the wheel and hubcentre-nut.


53/88

I4 Retract the brake pad from the discusing a pair

of water-pump pliers as shown.

5 Remove the brake caliper and hang it from thelower wishbone use a cable tie .

6 Undo the locating stud and screw in the brakedisc.

Remove the disc from the hub.

Saab 900


54/88

774 15ubs

If necessary carefully tap the end of the driveshaft with a soft face mallet.

10 Pull the steering swivel member and hub assem-bly off the wishbones and drive shaft.


55/88

Saab 9

I

To dismantle

Press out the hub using tools 78 41 075

89 96 456 and 89 96 449

Note

Pressing out the hub damages the bearing whichmust therefore be renewed.


56/88

774 17ubs

Fit the circlip in the groove in the steering swivelmember

o ssemble


57/88

Saab 900

I

2 Press the bearing up against the circl ip in thesteering swivel member using tools 8 9 114and 89 96 464

Note howtool 89 96 464 should be positioned

Note

Lubricate the bearing housing inside the steeringswivel member with MOLYCOTE G grease

774 18 Hubs

3 Fit the outer circlip

Press the hub into the bearing using tools87 91 2 46 and 89 96 464

Position tooL a9 96 464 against the innerbearing


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Saab 900


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Rear-wheel hubs M79-87

Hubs 774 21


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,.-;::::::;-.

Rear-wheel uearly variant

Hub Wheel stud3 Wheel bearings4 Seal

To remove1 aise the car and remove the wheel

Remove the brake caliper and hang it out of theway

Remove the brake disc.3 Use a screwdriver to pry off the hub dust cap.4 Tap the locking tab o ut o f the groove and re-

move the hub centre nut and thrust washer.

b 9

Rear-wheel u later variant, pre.M881 Hub

Wheel stud3 Wheel bearings4 Seal

I

774-22 Hubs

5 Pull off the hub if necessary. use puller89 96 084 r puller 89 95 185 with the four extension pieces. 89 96 050).

Note


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Note

During MY82 the bearing and seal were incorporated as an integral part the hub. These parts can

therefore no longer be replaced sepa-rately and. ifdamaged. will necessitate replacement of the entirehub unit.

6 Use a screwdriverto break out the seal the sealwill always have t be renewed) and remove thetwo inner bearings.

7 Inserta suitabledrift in the milled recesses in thehub and drive out the outer bearing.s. Stand the

hub ona block wood to prevent theend facesbeing damaged.

fit Early-variant hubs onlyThoroughly clean and inspect all parts and replaceany that are worn r damaged.

l Press the outer bearings into the hub using drift89 96 241

2 Half f ill the space between the outer bearingswith Saab Special Chassis Grease and alsogrease the inner bearings.

Saab

774-23ubs

3 Fit the inner bearing, and lubricate and fit theseal use grease or heavy oil).

4 Inspect the surface of the stub axle to ensurethat the seal will slide freely. If the surface isscored or pitted, polish it using fine emery cloth.Finally, grease the surface.


63/88

Saab 900

I

5 Fit the hub, followed by the outer bearing, thrustwasher and centre-nut.

If the part of the collar previously upset ends upin line with the groove in the shaft fit a new nut.

Tightening torque:

Stage 1: 49 Nm 36 f tStage 2: Slacken the nutStage 3: 2-4 Nm 1.5-2.9 Ibf t

Use a round-nose drift to upset the collar in the

groove to prevent the collar from splitting.6 Pack the dust cap with grease and refit it.7 Fit the brake disc , brake caliper, wheel and

wheel nuts.8 Lower the car.

Tighten the wheel nuts.

Tightening t o rque fo r wheel nuts: 90-110 Nm 66-81 Ibf t

774-24 Hubs

o it

Later-variant hubs, introduced during MY82

Thoroughly clean and inspect all parts and replaceany that are worn or damaged.

1 Fit t he hu b, fol lo we d b y t he t hrus t wash er andcentre nut


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centre-nut.2 Tighten the nut.

Tightening torque fo r cent re n ut : 3 1Nm 22 0 9 Ib f tt

If the part of the collar previously upset ends up

in l ine with the groove in the shaft , f it a new nut.

3 Fit the hub dust cap.

4 Fit th e b rake disc, brake caliper, wheel andwheel nuts.

5 Lower the car and t ighten the wheel nu ts.

Tightening torque fo r wheel nuts: 90-110 Nm 66 81 Ib f tt

Saab 9

Rear-wheel hubs M8S onwards

Hubs 774 25


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1

~ i l + J l H - - - 2

Rear wheel u M onwards1 Bearing housing Bearings Inner race4 Seal

remove1 Raise the car and remove the r r wheel2 Disconnect the handbrake cable from the cali-

per and rest the cable on the rear axle

Saab 900

774 26 u s

Cars with brakes:

Unbolt the w h l ~ s l l s o rfro m the h ub and re-lease the lead from the bracket on the tra ilingend of the spring link.


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3 Remove the screw plug and unscrew the ad-justing screw in the caliper.

4 Unb ol t th e brake calipe r and hang it fro m thetorque arm.

b

774 7ubs

5 Undo the locating stud the brake disc and re-move the disc


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Saab 900

I

8 Pull the hub off the stub axle

7 Remove the centre nut

6 Remove the dust cap from the hub centre nut

774-28 Hubs

o it

1 Clean the stub axle , using a piece of fine emerycloth to remove any pitting, burrs, etc

2 Lubricate the stub axle with thin oil.

3 Gripping the hub in both hands, apply pressure


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pp g pp y pwith the thumbs to the bearing race and pushthe hub onto the stub axle .

4 Fit a new hub centre-nut.

Tightening torqu for hu centre-nut:280-300 Nm 207-221 Ibf tt

5 Fit the du st cap.

6 Fit the brake disc and locating stud.

Saab 900


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774 30 Hubs

Drive shafts V joints

To dismantle

Note


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Take care to remove all dirt and dust particles.

Undo the clip and slide the rubber gaiter on the joint back along the shaft.

Mountthe shaft in a press and compress the twospringwashers to allowthe circlip insidethe hubto move in its groove.

Open thecirclip and release the force applied bythe press.

Withdraw the drive shaft from the hub completewith the spherical washer the two spring wash-ers and the circlip on the shaft.

The hubcirclip should remain in its groove in thehub.

Saab


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774 32 Hubs

Drive shafts

To remove

Place spacer tool 9 209 u nd er the u pp erwishbone


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2 Loosen the hub centre nut3 Raise the car

Remove the front wheel and hub centre nut

Note

Take care to remove all dirt and dust particles

4 Release the clip securing the rubber gaiter overthe inboard universal joint

Cars with ASS brakes:

Unbolt the wheel sensorand tuck the lead outofthe way

Saab 9

5 Undo the securing bolts for the upper nd lowerball joints on the wishbones.

u s 774 33


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6 ull the steering swivel member away from the

lower wishbone and swivel it up to enable thedrive shaft to be withdrawn.

7 Withdraw the drive shaft nd fit covers to therubber gaiter and driver cup.

Saa b

I

774 34 Hubs

Constant velocity CV joints

Note

When dismantling the V joint use plastic covers tokeep dir t and dust out ofthe joint.


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dismantle1 Remove the grease from the joint.

Release the clips and slide the rubber gaiterback down the shaft.

2 Op en the c irclip and pull the sha ft ou t thejoint.

To assemble1 Pack the joint with about 80 g o f Esso Nebu la

EP grease.2 Insertthe drive shaft in the hub. ensuring that the

circlip snaps into place in the groove in the shaft.

Check that the circlip is properly seated by ap-plying a sharp outward pull to the shaft.

3 Fit the rubber gaiter.

Tighten the clips: if you are f it ting new clips ofthe non screw type fit them as shown in the ad-jacent picture.

Take care not to damage the rubber.

For fitting and removal of the new clips we rec-

ommend a specia l tool Knipex 99 pliers.available from Oetker.

Saab

To replace V joint gaiters

Note

Take care to remove all dirt and dust particles.

1 Remove the CV joint

Hubs 774 35


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1 Remove the CV joint.

2 Undo the clips and remove the gaiter from theshaft.

Note

Remove clips of the non screw type using pliers rsimilar as shown . Take care no t to d amage th erubber.

Fit a new gaiter.

I

Tighten the clips: if you are fitting new clips the non screw type fit them as shown in the ad-jacent picture.

Take care not to damage the rubber.

For fitting and removal of the new clips we rec-ommend a special tool Knipex 1099 pliers avail-able from Cetker.

4 Fit the CV joint.5 Pack the joint with 8 g o f Esso Beacon EP

grease.

Saab 900

774 36 Hubs

nboard universal joint o dismantle

1 Remove the grease from the joint.2 Remove the circlip.

Note


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The latest drive shaft variants incorporate a stop forthe driver cup instead a circlip. This comprises ataper on the shaft and a corresponding taperon thedriver cup splines.

The latest variant the driver cup must bef i tted todrive shafts the latest variant. However the newdriver cup may also be fitted to early variant driveshafts.

New drive shafts are fitted in production to the fol-lowing cars:

Cars t Scandinavian specification with effect fromchassis nos.:

AC1022347 AC2007941. AC3007195 andAC6001952.

Cars t non Scandinavian specifications with effectfrom chassis nos.:

AC1005904 AC2001784. AC3001770 andAC6000001.

Further details are given in section 4:1 the Work-shop Manual.

3 Pull the joint off the shaft.

o assemble1 Slide the joint onto the shaft and f it the circl ip .2 Pack the gaiter with 6 g Mobil GS57C

grease.

Saab 900

nbo rd univers l joint repl ce the g iter

Note

Take care to remove all dirt and dust particles

u s 774 37


77/88

1 Undo the clip onthe driver cup end ofthe gaiter2 Remove the shaft assembly3 Remove the inboard universal joint4 Undo the clip at the shaft end of the gai ter and

pull the gaiter offthe shaft

5 Fit a new gaiterSee page 774 35 for details of fitting the clips

6 Packthe gaiterwith g of Mobil GS57Cgrease7 Fit the shaft assembly

8 Fit the universal joint9 Fit the clip at the driver cup end of the gaiter

Saab 9

I

774-38 Hubs

rive shafts o fit

NoteTake care to remove all dirt and dust particles.


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1 Remove the temporary covers from the drivercup and rubber gaiter.

2 Pack the driver cup with g of Mobil GS 7Cgrease.

3 Insertthe shaft in the driver cup.4 Tighten the clip on the gaiter on the inboard uni

versal joint see page 774-35 .

5 Insert the drive shaft in the steering swivelmember.

Reconnect the steering swivel member to thelower wishbone.

6 Fit the bolts securingthe ball joints on the upperand lower wishbones.

Tightening torqu 40-54 Nm 29-40 Ibf t

Saab 900

7 S c re w o n a n e w h u b ce n tr e -n u t, fin g e r tig h t.

C a rs w ith b ra ke s :

R e fit th e w h e e l-s e n s o r.8 F it th e wh e e l a n d lo w e r th e c a r.

Ti g h te n in g to rq ue fo r w h ee l bo lts:1 0 5 -1 25 Nm 7 8- 86 f tt

H u b s 7 7 4 -3 9


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9 Tig h te n th e h u b c e n tre -n u t.

T igh te n in g to rq ue fo r hu b ce nt re- n u t:2 80 -3 00 Nm 2 0 7 -2 2 2 Ib f tt

10 R e m o ve th e s p a c e r to o l fro m u n d e r th e u p p e rw is h b o n e .

S a a b 9 0 0

774-40 Hubs

Replacing the front-wheelstuds M79-80

To remove1 Remove the hub centre-nut and slacken the

wheel nuts.2 Raise the car and remove the wheel.


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3 Rotate the brake disc to bring one of the re-cesses in the edge o f the di sc level with thecentre-l ine at the leading edge of the brakepads. Disconnect the handbrake cable a nd re-move the brake caliper. Tie back the brake caliper to avert damage to the brake hose

4 Remove the hub and disc assembly from theshaft using puller 89 96 084 or 89 95 185 withthe four extension pieces 89 96 050

5 Bend up the tabs on the lock washers and remove the screws securing the brake disc to thehub.

6 Mountthe hub in a press and remove the wheelstuds alternatively use press tool 89 95 920and a suitable sleeve.

Saab

o it

Mount the hub in a press and fit the wheel studs alternatively, use press tool 89 95 920 and asuitable sleeve).

2 Bolt the disc onto the hub, tighten the bolts andupset the locking tabs.

Tightening torque: 30-50 Nm 25-37 Ibfft)3 Slide the hub and brake disc assembly onto the

shaft Fit the thrust washer and hub centrenut

Hubs 774-41


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shaft. Fit the thrust washer and hub centre nut.

Note

To avoid stripping the thread, use a torque wrenchto tighten the hub centre-nut. If using a nut runner,use a reba red taper washer between the tool andthe nut

Tightening torque f or h ub centre-nut:35 1 Nm 260 9 bf ft)Securethe nut by upsetting the collar in the groovein the shaft.

I

t it the brake caliperl

WARNING

For the brakes to operate properly, the brakepads must be advanced to their normal position close to the disc. Do this by pumping thebrake pedal.

Fit the wheel and lower the car Tightening torquefor wheel nuts: 9 11 Nm 66 81 Ibf t

Saab 900

774 42 Hubs

Replacing the front-wheelstuds M81-87

To remove1 Fit tool 83 93 2 9 under the upper wishbone

and remove the hub centre nut2 Raisethe car and remove the wheel3 Rotate the brake disc to bring one of the re-


82/88

cessesin

the edge o f the di sc level with thecentre l ine at the leading edge o f the brakepads Disconnect the handbrake cable an d re -move the brake caliper Tie back the brake cal-iper to avert damage to the brake hose

4 Remove the brake disc from the hub

5 Separate the track rod end from the steering

arm using tool89 95 4 9

6 Undo the bolts securing the ball joints on the up-per and lower wishbones Pull the steeringswivel member and hub assembly off the wish-bones and drive shaft

Saab 900

774-43u s

7 Press out the hub using tools 78 41 06789 96 456 and 89 96 449.

Using a universal puller pull the inner bearingout of the hub. Ifthere are no recesses allowinga puller to be used drive the bearing ou t bymeans of a cold chisel.

Note


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Saa b

I

2 Press the hub into the bearing using tool83 90 114 and 89 96 464.

Position tool 89 96 464 on the inner bearing.

To fit

Mount the hub in the press and fit the studs alternatively use press tool 89 95 920 .

Mount the hub in a press and remove the wheelstuds alternatively use press tool 89 95 920 .

Pressing the hub out of the steering swivel memberdamages the wheel bearing which must thereforebe renewed.

774-44 Hubs

3 Apply MOLYCOTE G grease to the splines. andinsert the drive shaft into the hub.

Ref it the steer ing swivel member to the upperand lower wishbones.

4 Fit the hub-centre nut and brake disc.5 Fit the brake caliper and pads.6 Reconnect the t rack -r od end to the steering

arm.7 Fit the wheel and lower the car.


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Tighten the hub centre-nut and wheel.nuts.

Tightening torque for hub centre-nut:290-310 210-230 Ibf tt

i h t ~ n i ntorque for wheel nuts: 90-110 m 66-81 Ibf t t

Secure the hub nut by upsetting the collar in the

groove in the shaft.

8 Removetool 8393 9 from the upperwishbone.

WARNINGFor the brakes to operate properly, the brake

pads must be advanced to their normal position close to the disc. o this by pumping thebrake pedal.

Saab 900

774-45ubs

Replacing the rear-wheelstuds M79-87

To remove1 Raise the car and remove the wheel. Remove the brake caliper and hang it out of the

way.

Remove the brake disc.


85/88

Saab 900

I3 Press out the wheel studs using tool 89 95 9

and a removal sleeve behind the hub.

2 Fit the brake disc and brake caliper.

3 Fit the wheel and lower the car.

Tightening torque for wheel nuts: 90-110 m 66-81 b f tt

To fitPress inthe new studs using tool 89 95 9 anda fitting sleeve positioned on the outboard sideof the hub.


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Saab utomobile STrollhiHtan Sweden

Printed in Sweden GraphIc Syslems B Gbg 99 676

7 - suspension, wheels [ocr]

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