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Front suspension, drive shafts > < Checking shock absorbers when removed

A5

Checking shock absorbers on shock tester
Checking shock absorbers on shock tester
The shock tester allows shock absorbers to be tested without removing them from the vehicle. The damping effect can be assessed on the basis of the pointer deflection or the print-out.
Special tools and workshop equipment required
t  Boge shock tester or
t  Sachs shock tester -V.A.G 1975- or
t  Maha shock absorber tester -VAS 1990-
  Note
t  Temperature +10 ... +40 °C.
t  Driver in vehicle.
t  Tyre pressure OK
t  Wheels of vehicle in a central and straight position on the tyre contact plates.
t  Front wheels in straight-ahead position.
t  Handbrake not applied, brake pedal not depressed.
Test results
The condition of the shock absorbers can only be evaluated as follows:
t  Satisfactory damping effect
or
t  Unsatisfactory damping effect
  Note
t  It is not possible to obtain more detailed readings specifying the exact degree of impairment of damping effect.
t  A forecast of the remaining service life is not permissible.
t  Test results will be falsified if the suspension contacts the bump stops when the readings are taken.
The following values apply only to tests conducted on the test equipment listed above. If the maximum values listed below are exceeded, the effectiveness of the shock absorber has deteriorated significantly and renewal is recommended.
   
Example:
Maximum value = 70
t  a = higher than 70: unsatisfactory damping effect
t  a = lower than 70: satisfactory damping effect
The damper combinations fitted in the vehicle are indicated by the corresponding PR No. on the vehicle data sticker.
Explanatory notes on production control numbers (PR Nos.) → Chapter
Maximum values „a“ in mm
  Note
t  If the reading is higher than the maximum value „a“ listed in the table, the damping effect is unsatisfactory ⇒ renew the shock absorber.
t  If the reading is lower than the maximum value „a“ listed in the table, the damping effect is satisfactory ⇒ the shock absorber does not have to be renewed.
  V40-0695
Coupé/Cabriolet
Model/versionFront axleRear axleRemarks
1BA standard running gear, front axle 53/Applies to front-wheel drive and four-wheel drive
1BA standard running gear, rear axle/50Applies to front-wheel drive and four-wheel drive
    
1BE sports running gear, front axle53/Applies to front-wheel drive and four-wheel drive
1BE sports running gear, rear axle/50Applies to front-wheel drive and four-wheel drive
    
1BD sports running gear, front axle53/Applies to four-wheel drive
1BD sports running gear, rear axle/50Applies to four-wheel drive
    
1BL running gear with electronic damping control, front axle 46/Applies to front-wheel drive and four-wheel drive
1BL running gear with electronic damping control, rear axle/38Applies to front-wheel drive and four-wheel drive
    
1BV sports running gear, front axle53/Applies to front-wheel drive and four-wheel drive
1BV sports running gear, rear axle/50Applies to front-wheel drive and four-wheel drive
    
  /Applies to four-wheel drive
 / Applies to four-wheel drive
    

   
Sportback
Model/versionFront axleRear axleRemarks
1BA standard running gear, front axle 55/Applies to front-wheel drive and four-wheel drive
1BA standard running gear, rear axle/54Applies to front-wheel drive and four-wheel drive
    
1BE sports running gear, front axle53/Applies to front-wheel drive and four-wheel drive
1BE sports running gear, rear axle/50Applies to front-wheel drive and four-wheel drive
    
1BD sports running gear, front axle53/Applies to four-wheel drive
1BD sports running gear, rear axle/50Applies to four-wheel drive
    
1BL running gear with electronic damping control, front axle 46/Applies to front-wheel drive and four-wheel drive
1BL running gear with electronic damping control, rear axle/38Applies to front-wheel drive and four-wheel drive
    
1BV sports running gear, front axle53/Applies to front-wheel drive and four-wheel drive
1BV sports running gear, rear axle/50Applies to front-wheel drive and four-wheel drive

   

Front suspension, drive shafts > < Checking shock absorbers when removed