Page 312 of 891
FRONT AX LES ELEMENTS
31
31 - 21
Power train support
TIGHTENING MOMENTS (daNm)
Wheels attachment screws 7.5
Shock absorber lower attachment screws
to the steering knuckle arm 10.5
C onnecting straps upper attachment screws 2.7
Anti-roll connection rod attachment screws
to the steering crossbar support 6.2
Con nection screw of the steering column
lower shaft-steering box gear 2.1
AT T E N T I O N !
Di smounting of the front axles screws
and nuts implies their obligatory
r eplacement and tightening to the required
moments.
DISMOUNTIN G
Disconnect the battery.
Dismount :
- connection screw of the steering column
lower shaft-steering box gear;
-therm al sc reen att achment nut s on
exhaust manifold and remove the thermal screen;
- attachment studs descending pipe –
exhaust manifold. Loosen the front wheels scr ews.
Lift the vehicle by means of a two-column
elevator. Dismount
the engine shield.
Dr ain oil from power-assisted steeri ng
circuit ( see chapter 05). Drain oil from gearbox ( see chapter 05).
Dismo unt :
- front bumper 9 see chapter 55);
- left/right front wheels fairi ng ( see
chapter 56); -connecting straps upper attachments
power train support – carriage body; -uppe r a t t achm ents of the shoc k
absorption connecting straps (connecting
str aps of suspension arms shaft s-carriage
body); -brake calipers off t he for k a nd
suspend the calipers; -connection clip of descending pipe-
e xpansion chamber and remove the
descending pipe.
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Page 321 of 891
33
REAR A XLES ELEMENTS
33 - 7
Brake drum
The two brake drums having the same diameter; the rectifyi ng of one of them, obligatory
implies t he same operation for the other one.
SPECIAL TOOLS
Plug extracting pliers RO441
Dr um extractor PF600
TIGHTENING MOMENTS (daNm)
Wheel attachment screw 7.5
Steering knuckle nut 22
DISMOUNTIN G
Dismount the wheel.
Extract the plug out of the drum using the ex-
tracting pliers RO441.
Release the hand bra ke, l oosening the sec-
ondary cables. Pass a screwdriver through the wheel attach-
ment whole of the drum and operate on the
geared lever sector loosening its gearing with the
hand brake lever. Dismo unt :
- the steering knuckle nut and washer;
- the drum by means of the PF600 ex-
tractor.
R EMOU NT I NG
Clean t he drum and t he brake plate a ssembly by means of a c leaner (vacuum c leaner) for
brake;
Mount :-the drum
- the steering knuckle washer and nut tightening them to the required moment;
- the drum plug
Adjust:
-the shoes by applying a repeated pressure to the brake pedal;
-hand brake ( see chapter 37-“Controls”)
Mount the wheel and tighten the screws t o the required moment.
33 - 7
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Page 322 of 891
33
REAR A XLES ELEMENTS
33 - 8
Brake cylinder
TIGHTENING MOMENTS (daNm)
Wheel attachment screw 7.5
R ear wheel steering knuckle nut 22
Purging screw 1
Brake rigid piping connection screw 1.5
C ylinder attachment screw on plate. 1
Dismounting pliers for shoes return spring FR 03
Plug extractor pliers RO 441
SPECIAL TOOLS
A
DISMOUNTIN G
Loosen the rear wheel attachment screws.
With the vehicle placed on an e levator with
two columns, dismount:
- the wheel;
- the drum plug;
- brake drum;
- upper spring for shoes return, using pli-
ers FR03.
S pace t he brake shoes.
Unscrew: - the rigid piping connection on the brake
cylinder by means of an open-end wrench; -the two attachment screws of the brake
cylinder on the brake plate;
-remove the brake cylinder. Check the condition of the shoes brake
lini ng.
R EMOU NT I NG
Clean t he drums and the brake shoes as-
s embly by means of a cleaner (va cuum
cleaner) for brake.
Perform in reverse order the dismounting
operations:
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Page 324 of 891
33
REAR A XLES ELEMENTS
33 - 10
Brake shoes
SPECIAL TOOLS
Plug extracting pliers RO441
Di smounting pliers for shoes return spring FR03
Pliers for maintaining brake cylinders pistons FR05A
TIGHTENING MOMENTS (daNm)
Wheel s crews 7.5
Rear wheel s teering knuckl e nut 1 6
CR
R TR
DISMOUNTIN
G
The replacement of brake shoes must be
performed in complete set, never mount the
brake shoes equipped with brake linings of
different brands and qualities.
Dismou nt :
- the brake drum ( see the correspond-
ing paragraph); - the t wo maintenance springs ( R) of
the shoes with a brake cylinder rod ( T). By means of the pliers
FR05A the brake cyl-
inder pistons are immobilized.
Remove the return upper spring of the shoes
using the pliers FR03.
Release the end of the hand brake cable from
the hand brake lever.
Swing the adjustmen t lever (C) u p t o the mo-
ment it comes into contact with the rear wheel
steering knuckle. Distance the shoes from the plate.
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Page 327 of 891
33
REAR A XLES ELEMENTS
33 - 13
Bearing
SPECIAL TOOLS
Plug extracting pliers RO 441
Drum extractor PF 600
TIGHTENING MOMENTS (da Nm)
Rear wheel steering knuckle nut 22
Wheel attachment screws 7.5
ΦΦ ΦΦ
38
ΦΦ ΦΦ
65
CHECKING
Check by means of a comparing device attached on the drum, the a xial clearance: 0 – 0.15
mm max after mounting and tightening to the moment of 22 daNm.
DISMOUNTIN G
Dismount :
- the drum plug by means of the extracting pliers RO441;
- rear wheel steering knuckle nut;
- the drum.
Dismount from the drum:
- the boring lock;
- the be aring by means of a t ube Ö38mm.
If necessary, use the extractor CV 28 A, in order to extract the bearing inner ring, remained
on the steering knuckle.
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Page 334 of 891
36
STEERING ASSEMBLY
36 - 1
St eering connecting rods
SPECIAL TOOLS
DIR. 1306 Device for steering r ack locking up
in regard to steering box casing.
P. F. 476 Device for ball joints depressing
DIR. 505 Wrench for dismounting/remounting
joint body on rack
Wheels screws 7.5
St eering ball joi nt nut 4
Joint body in rack 5 TIGHTENING MOMENTS (daNm)
Disconnect the battery.
Lift the vehicle by means of a two-column elevator.
DISMOUNTIN G
Depress the rod funnel ba ll joint from the steering knuc kle arm by m eans of the PF 476
device.
Dismount the bellows maintaining clip from the steering box casing.
Turn the wheels hard over to the right, so that rack is m oving towards left.
On the left side
Using the DIR 1306 device , lock up the rack in regard to the steering box casing.
In this position, dismount the joint body from the rack.
Remove the left steering rod.
On the right side, proceed in the same way.
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Page 335 of 891
36
STEERING ASSEMBLY
36 - 2
St eering connecting rods
REMOU NT I NG
At each dismounting, it is OBLIGATORY the replacement of the limiter washer( 1) as well
as of the safety washer ( 2).
M ount in the rack : j oint body ( 3), not before positioning the safety washer ( 2), the limiter
w asher (1) and oiling the t hreaded pa rt ( 4) of the j oint body with FIXAMED R 58-C.S.1/82
(not excessively).
After tightening to t he required m oment of the axial ball joint on the rack, bend the safety
w asher over one of the cuts made on the joint body.
By means of the DIR 1306 , lock up the rack in regard to t he steering box casing.
Tighten to the required moment of 5 daNm, the joint body in the rack by means of the
DIR 505 wrench.
M ount the funnel ball joint in the steering knuckle arm, then tighten the nut to the required
moment of 4 daNm.
P osition the steering at the middle point ( wheels being in straight line position) in order to
balance the air from bellows. Mount the bellows in its c hannel from the steering box casing and secure it using a clip.
CHECKING
S lightly tighten by hand one of the bellows in order to check the other one inflation, in this
way, the good air circulation inside the steering box is checked. Check the steering geometry and adjust the parallelism if necessary.
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Page 336 of 891
36
STEERING ASSEMBLY
36 - 3
Manual steering box
SPECIAL TOOLS
P. F. 476 Device for ball joints depressing
Wheels screws 7.5
St eering ball joint nut 4
St eering box attachment screws on crossbeam 5
Cardan joint connection screws with
column lower shaft 2.1
TIGHTENING MOMENTS (daNm)
Disconnect the battery.
Loosen the front wheels scr
ews.
Lift the vehicle by means of a two-column elevator.
Dismount the front wheels.
DISMOUNTIN G
In the engine compartment:
Cut the rubber bellows maintaining clip and push it towards cowl panel.
By means of the PF 476 device, depress the ball joints of the steering rods funnel from the
steering knuckle.
Dismo unt :
- connection screw between the cardan joint of the steering column lower shaft and the
steering rack gear shaft;
- steering box attachment screws on the crossbeam.
Detach the steering box assembled with the steering rods.
R EMOU NT I NG
Perform the dismounting operations in the reverse order, observing the required tightening
moments. In case a new steering box is mounted, the parallelism is obligatory to be adjusted, observing
the parallelism adjusting procedure described in chapter 31.
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