Porsche 928 - WORKSHOP MANUAL 1977 Workshop Manual page 111

44
Wheels, Tires, Alignment
928
Wheel
alignment values
Important notes
Only check and/or adjust wheel alignment
values if the specified preconditions have
been fulfilled (Page 44 - 1 under general) and
at actual vehicle height
(Page44-2/44-2a).
If the vehicle is to be allgned front and rear,
first check and/or adjust the rear axle.
Front axle
Prepare the vehicle for checking and/or adju-
sting the wheel alignment values. Position the
front wheels on rotary plates, etc.
If the vehicle is not driven onto rotary plates,
but raised, or raised for any other reason, the
actual vehicle height must then be restored by
pulling down.
Adjust camber and caster
Camber and caster are both adjusted by
means of eccentrics on the lower control arm.
Tighten self-locking hexagon nuts with 120
Nm (83.5 ft. lb.)
Seal the slit openings for the adjusting eccen-
trics (Page 40 - 23).
Note
If vehicles have aluminium joint ceniers,
always turn the caster eccentric from small
values towards large caster values, i.e. ff the
caster value is too high, first turn the eccentric
back completely and then adjust to the
correct value. This guarantees that the
camber and caster values are always maintai-
ned, even under extreme operating condi-
tions. If it is not possible to achieve the prescri-
bed caster value, adjust the other side to the
higher value if necessary (up to 4 degrees 30
is acceptable).
No.
1
2
for aluminium
joint carrier
Caster eccentric
Camber eccentric
1
for steel
l
joint carrier
Camber
eccentric
Caster
44 - 4
a
Alignment
Printed in Germany - XXII. 1989