Porsche 928 - WORKSHOP MANUAL 1977 Workshop Manual page 106

928
Alignment
General
Use an optical or electronic axie measuring device to align the vehicle. Refer to the operating instruc-
tions for the axie measuring device for the measuring procedure.
The following precondtions must be fulfilled before starting alignment:
- Vehicle at curb weight as per DIN 70020, Le. ready for the road with full tank, spare wheel
and tads.
- Correct joint and wheel-bearing play
- Prescribed tyre inflation pressure, more or less uniform tyre tread
If vehicle is to be aligned front and rear, first check and/or adjust the wheel values for the rear axle.
Center the steering wheel and steering for track adjustment.
Before starting to adjust the wheel values for front or rear axles, it may be advisable or necessary* to
check the rear axle height setting at DIN curb weight, as well as the front axie for vehicles with adjus-
table front spring struts.
If wheel-load scales are available, it is possible to keep the difference between right and left wheel
loads as low as possible thanks to the height adjustment facility. The difference in wheel load is adju-
sted by altering the height of the vehicle within the height tderance. Priority is given to the least possi-
ble difference between right and left wheel load.
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following work which causes an alteration in height or ff the height is incorrect.
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Alignment
44- 1
Printed in Germany - XXII. 1989