Fill the air spring in vehicle riding height position - AR32.22-P-1500-03TA

STRUTS

Electronic inclinometer (CM 09606),

See GOTIS: http://gotis.aftersales.daimlerchrysler.com

The bolted connection (1) of the air spring (2) on the spring control arm (3) must be loose. The left and right air spring must be filled separately in each case.

1. Attach compressed air connection to compressed air distributor of the rear axle .
2. Use STAR DIAGNOSIS to precharge air spring (2) to max. of 0.5 bar: compressor operating time/charging time roughly 2 seconds.
3. Position the transmission lifter (4) at the spring control arm (3).
   Fig 1: Identifying Air Spring, Spring Control Arm And Transmission Lifter

   
4. Measure angle of rear axle shaft (65) using electronic clinometer (CM 09606).

   The connecting cable (086b) of the sensor (086a) must point towards the center of the vehicle otherwise a faulty measurement occurs. The test points on the rear axle shaft (65) must be cleaned.

5. Use transmission jack to lift spring control arm (3) until the rear axle shaft (65) has reached the specified value in the design reference position. Specified value in design level: -1.2°.
   Fig 2: Identifying Connecting Cable And Sensor On Rear Axle Shaft

   
6. Fill air spring to moderate pressure (2 bar) using STAR DIAGNOSIS: compressor running time, filling time 10 seconds.
7. Check the alignment of the air spring (2) in the vehicle riding height position. The air spring (2) must be straight and parallel to the parallel to the shock absorber (5). Observe dimensions (b, c):

   Dimension (b) 36.4 mm

   Dimension (c) 18.7 mm

   The protective boot (6) of the air spring (2) must be free to move and as able to be lifted upwards off the inflated air spring bellows. The folds in the protective boot (6) must be correctly trained and must not have any intrusions (arrow), if necessary remove the intrusion by hand.

   Fig 3: Identifying Air Spring With Dimensions

   
8. If the air spring (2) is buckled, bleed all compression, lower spring control arm (3) with transmission jack (4), align air spring (2) and start new charging attempt.
   Fig 4: Identifying Air Spring, Spring Control Arm And Transmission Jack

   
9. Tighten the bolted connection (1) of the air spring (2) at the spring control arm (3) in the vehicle riding height position .
10. Lower spring control arm (3) with transmission jack (4).
11. Fill air spring (2) to 5 bar pressure using STAR DIAGNOSIS: Compressor running time or filling time approx. 20 seconds.
    Fig 5: Identifying Air Spring, Spring Control Arm And Transmission Jack

    
12. Check the alignment of the air spring (2) at full rebound travel: The air spring (2) is slightly curved towards the shock absorber (5). The protective boot (6) must not touch the shock absorber (5), but the inner air bellows must not press against the shock absorber (5). The protective boot (6) of the air spring (2) must move freely and be able to be raised by the inflated air spring bellows. The folds in the protective boot (6) must be correctly trained and should not display any intrusions toward the inside, respond to requirement by removing intrusions by hand.
13. Read out the diagnostic trouble code memory using STAR DIAGNOSIS and erase if necessary.
    Fig 6: Identifying Damper, Protective Boot And Air Spring