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

WARNING: This page is about a different car, the 2009 Mercedes-Benz E550 and 2008 Mercedes-Benz E550. However, it is still accessible from the selected car via links, so may be relevant.
CHECK VALUES FOR REAR AXLE SUSPENSION STRUT

Number Designation Model 211 except model 211.6, except model 211 with 4MATIC Model 211.6
BE32.30-P-1001-01B Air spring installed dimension Dimension C mm 19 (±3) 17 (-3)
CHECK VALUES FOR REAR AXLE SUSPENSION STRUT

Number Designation Model 211 with 4MATIC
BE32.30-P-1001-01B Air spring installed dimension Dimension C mm 18 (±3)
SUSPENSION STRUTS

Number Designation Model 211.2/6
BA32.25-P-1008-04B Nut, rear air spring at spring control arm Nm 150
BA32.25-P-1009-04B Air suspension pressure line at rear axle distributor Nm 2

Electronic inclinometer

gotis://F_40.2_02.0 

IMPORTANT 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 TORQUE SPECIFICATION .
  2. Prefill air spring (2) with a maximum of 0.5 bar using STAR DIAGNOSIS: Compressor running time or filling time approx. 2 s.
  3. Position the transmission lifter (4) at the spring control arm (3).
    Fig 1: Identifying Bolted Connection, Air Spring, Spring Control Arm And Transmission Lifter
    G07255713Courtesy of MERCEDES-BENZ OF NORTH AMERICA.
  4. Measure angular position of rear axle shaft (65) using electronic inclinometer.

    IMPORTANT The connecting cable (086b) from the sensor (086a) must point towards the center of the vehicle otherwise an incorrect measurement ensues. 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°.
  6. Fill the air spring to medium pressure (2 bar) using STAR DIAGNOSIS: compressor running time or filling time approx. 10 seconds.
    Fig 2: Identifying Rear Axle Shaft, Connecting Cable And Sensor
    G07255714Courtesy of MERCEDES-BENZ OF NORTH AMERICA.
  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 shock absorber (5). Observe installed dimension (c) (see table).

    IMPORTANT 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: Locating Intrusion On Protective Boot Of Air Spring
    G07255715Courtesy of MERCEDES-BENZ OF NORTH AMERICA.
  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: View Of Buckled Air Spring
    G07255716Courtesy of MERCEDES-BENZ OF NORTH AMERICA.
  9. Tighten the bolted connection (1) of the air spring (2) at the spring control arm (3) in the vehicle riding height position TORQUE SPECIFICATION .
  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 Bolted Connection, Air Spring, Spring Control Arm And Transmission Lifter
    G07255713Courtesy of MERCEDES-BENZ OF NORTH AMERICA.
  12. Check the alignment of the air spring (2) at full rebound travel:

    IMPORTANT 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: View Of Correct Air Spring Alignment
    G07255718Courtesy of MERCEDES-BENZ OF NORTH AMERICA.
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