Q7 Quattro V6-3.6L (BHK) (2007)
Suspension Strut / Shock Absorber: Component Tests and General Diagnostics
Checking on Shock Tester
Shock absorbers, testing on shock tester
Shock absorbers can be checked while installed using the shock tester (shock absorber testing device). The damping effect can be evaluated based on
dial reading or print-out.
Special tools, testers and auxiliary items required
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Boge shock tester or
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Sachs shock tester V.A.G 1975 or
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Maha shock absorber tester VAS 1990
Note:
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Temperature +10 to +40°C.
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Driver in vehicle.
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Tire pressure OK.
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Drive vehicle straight onto center of wheel contact plates.
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Front wheels in straight position.
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Parking not engaged, foot brake not activated.
Threshold
Shock absorber condition can only be judged as follows:
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Sufficient damping effect
or
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Insufficient damping effect
Note:
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Intermediate values for reduced damping performance cannot be read out.
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A prognosis on service life is not permitted.
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Measured values that come about from involvement of suspension travel end stops are incorrect.
These values apply only to the test stands named above. If the specified values are exceeded, the shock absorber action has weakened enough that a
replacement is recommended.
Example:
Threshold = 70
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a = Greater than 70: Insufficient damping effect
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a = Less than 70: Sufficient damping effect
Shock absorber combination installed in vehicle is indicated by corresponding PR number on vehicle data plate.
Threshold "a" in mm
Note:
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If the readout value is greater than the limit value "a" (table value): Damping effect insufficient, replace shock absorber.
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If the readout value is less than the limit value "a" (table value): Damping effect sufficient, shock absorber does not need to be replaced.