AR32.22-L-2003B | Remove/install air bellows | 15.1.10 |
MODEL 668.3 with CODE (CE3) Front and rear air suspension
with Electronic Level Control (ELC [ENR]),
front air spring bellows
MODEL 670.3## ## as of 076209 with CODE (CE3) Front and rear air suspension
front air spring bellows
L32.22-0017-06
1 Air spring bellows
2 Conical plate
3 Piston
4 Protective cap
5 Test connection
6 Bracket
7 Hook wrench
Y11 Electronic level control solenoid valve (front axle)
| Remove/install | ||
Danger! | Danger to life from lowering vehicle when working between wheels and body. Risk of injury by pinching or crushing when working on the air suspension. | Do not work between wheel and wheel well or in wheel box. Only carry out check and adjustment operations from underneath the vehicle. Secure areas with moving vehicle parts against unauthorized access. | |
1 | Turn steering wheel to full left or right lock. | ||
2 | Switch off ignition and remove ignition key | In order to prevent the vehicle frame being raised or lowered in an uncontrolled manner. | |
3 | Jack up vehicle frame and secure until the wheels are clear of the ground | Raise vehicle frame approx. 500 mm. | |
4 | Detach protective cap (4) and deflate front air spring bellows (1) completely by pressing the pressure pin (arrow) on test connection (5) of solenoid valve for electronic level control ()Y11 | ||
5 | Use assembly lever to pry air spring bellows (1) away from conical plate (2) | When prying off the air spring bellows (1) make sure that there are no score marks made on the conical plate (2) seat, that could result in a leak in the air spring bellows (1). | |
6 | Release piston (3) with air spring bellows (1) from bracket (6) using hook wrench (7) and remove | Hook wrench | |
7 | Fold air spring bellows (1) together and remove with piston (3) | Installation: Coat raised bead of air spring bellows (1) with soapy water. | |
8 | Detach air spring bellows (1) from piston (3) | ||
9 | Clean seat of conical plate (2), check for damage and coat with soapy water | If damaged, replace conical plate (2). | |
Detach/attach conical plate of air spring bellows | |||
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10 | Install in the reverse order | ||
11 | Apply compressed air to air spring bellows (1) via one of the test connection (5) until the air spring bellows (1) contacts the seats of the conical plate (2) and the piston (3) | In order not to damage the air spring bellows (1) apply a maximum of 7 bar to the air spring bellows (1). | |
Test kit | |||
12 | Check air suspension for leaks | ||
13 | Calibrate electronic level control (ENR) control unit |
Air bellows
Number | Designation | Model | |
BA32.22-N-1001-01D | Nut for attaching conical plate of front axle air spring bellows to console | Nm | 60 |
BA32.22-N-1007-01D | Banjo bolt, pressure line to front conical plate | Nm | 10 |
668 589 01 05 00
Hook wrench
Test kit
360 589 00 21 00
Referenced documents
- ar3222l200301a Detach, attach air bellows from piston
- ar3222l200303a Detach/attach conical plate of air spring bellows
- ar3222l8000a Check air suspension for leaks
- ar3233l0004a Calibrating electronic level adjustment (ELA) control unit
- as3222z000101a Risk of death from lowering vehicle when working between wheels and body. Risk of injury from pinching or crushing when working on the air suspension.