Rappel
: triangles de suspension défectueux
Modèles
concernés :
Porsche 944,
944 S, 944 Turbo et 944 Turbo S de 1988 dans tous les cas.
Note Porsche datant du 28 août 1989.
Problème
constaté :
Les triangles
sont identifiés avec les lettres correspondant au sous traitant,
soit "SM" soit "MBF" pour l'année 1988. Les
voitures de 1988 étant équipées des triangles "SM"
sont concernées, ceci représente 83% de la production de
944 en 1988. Un défaut de fabrication de ces triangles peut amener
à leur casse avec l'accumulation des kilomètres parcourus
ou en cas d'utilisation intensive. Le résultat est la perte de
contrôle du véhicule.
Pièces
nécessaires pour le remplacement :
Procédure
(donnée à titre indicatif) :
Identification and Repair Procedure
WORK PROCEDURE
A. Inspecting
A-arms
With vehicle on hoist, note the vendor identification cast into the bottom
side of the A-arms (arrows Figure 1).
A-arms with vendor
identification "MBF" are approved for use. A-arms with vendor
identification "SM" must be replaced.
Important:
A-arms on both sides
of the vehicle must be checked for the proper vendor type. Mixed installation
may have occurred in production.
B. Marking
of Vehicles
Vehicles
having approved A-arms and vehicles which have had approved A-arms installed
must be marked to verify inspection of the vehicle. This is done by placing
a paint dot (arrow Fig. 2) on the upper plate of the left side shock tower.
If the vehicle paint is light in color use a dark paint for marking and
light paint if the vehicle paint is dark.
C. Replacement
of A-arms with Vendor Identification "SM"
A-arms with vendor
identification "SM" must be replaced. Proceed as follows:
1. Remove
lower engine cover.
2. Remove
the M10 nuts (arrow A, Figure 3) connecting the stabilizer bar to the
lower control arms. Swing the stabilizer bar down to clear the A-arms.
3. Remove the 3 self-locking nuts (arrow B, Figure 3) from the front A-arm
mounting, ball joint attaching bolt, and caster eccentric.
Note:
Counterhold the caster adjuster with a 19 mm wrench when removing the
forward self-locking nut. With a pencil or marker, outline the installed
position of the caster adjustment mount on the body. This step will aid
in adjustment after reassembly.
4. Remove the two M10x65 mm bolts (arrow C, Figure 3) from the caster
adjuster and remove the caster adjuster from the A-arm.
5. Remove the A-arm front mounting bolt (M12x100 mm) and the M10 ball
joint bolt and remove A-arm.
6. Lightly coat the caster eccentric with Optimoly TA and loosely install
it into the new A-arm using a new self-locking nut.
Note:
Do not mix washers during reassembly. The thick washer goes to the caster
adjuster and the thin washer to the A-arm front mounting bolt.
7. Install new A-arm onto vehicle. Position the front mounting bolt M12
and install a new self-locking nut.
8. Install the caster adjuster onto the body in the position marked during
disassembly. Tighten the two M10 bolts to 46 N-m (33.6 ft.lbs.).
9. Install ball joint into steering knuckle and install M10 bolt with
new self-locking nut. Tighten to 50 N-m (36.5 ft.lbs.).
10. Final tighten the front control arm mounting bolt and nut M12 to 65
N-m (47.5 ft.lbs.) and the caster adjuster nut M12 to 85 N-m (62 ft.lbs.)
while counterholding caster adjuster.
11. Repeat steps 3 through 10 on the other side if both control arms are
to be replaced.
12. Reconnect stabilizer bar to A-arms using new self-locking nuts and
tighten to 25 N-m (18 ft.lbs.).
13. Reinstall lower engine cover.
14. Mark vehicle with paint dot as per instructions on page one (1) of
work procedure.
15. Align vehicle according to specifications.
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