A8L Quattro Sedan V8-4.2L (AKB) (2002)
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Suspension Strut / Shock Absorber: Component Tests and General Diagnostics
Shock Absorbers, Checking Using Shock Tester
Shock Absorbers, Checking Using Shock Tester
Shock absorbers can be tested while still installed in vehicle via the shock tester (shock absorber test tool). The damping capacity can be judged via
the travel of a pointer or via a printout.
Special tools and equipment
^
Boge shock absorber tester
or
^
VAG 1975 Sachs shock absorber tester
or
^
VAS1990 Maha damping tester
Test requirements:
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Temperature +10 to +40°C.
^
Driver in vehicle.
^
Tire pressure OK
^
Vehicle driven onto center of wheel plates in straight-ahead position.
^
Front wheels in "straight-ahead" position.
^
Parking brake not engaged, foot brake not operated.
Tolerance values
Shock absorber condition can only be judged as follows:
^
Damping effect sufficient
or
^
Damping effect insufficient
Notes:
^
Intermediate values for a reduced damping power cannot be read out.
^
Predicting service life is not permitted.
^
Measured values which are generated by the effect of the range of the spring stop positions are false.
The values are valid only for the above mentioned test stands. If the specified values are exceeded, the shock absorber has been weakened by more
than 50% replacement is justified.
Front axle
^
a = Larger than 60: damping effect insufficient
^
a = Smaller than 60: damping effect sufficient
Rear axle without self-levelling suspension
^
a = Larger than 60: damping effect insufficient
^
a = Smaller than 60: damping effect sufficient
Rear axle with self-levelling suspension
