ar3222g2003l

Remove/install air suspension bellows

Type ar · topic 32.22 · version 0204 · 2018-10-01

Applies to: Model 000.069 with rear axle 749.301/305 Model 000.069 with rear axle 749.306/307/320/321/322/330/335/337/340/347/348 with air suspensionHT250 Model 000.069 with rear axle 749.323/336/345/346 with HDB air suspension

Where it sits

Function group 2 Chassis › 32 Suspension › 32.22 Air suspension — Series 000 (models 069)

EinPAS 20 Chassis › 20.16 Suspension › 20.16.30 Spring/air suspension bellows/shock absorber/suspension strut — Series 000 (models 069)

Also applies to engines/gearboxes: 749 301, 749 305, 749 306, 749 307, 749 320, 749 321, 749 322, 749 323, 749 330, 749 335, 749 336, 749 337, 749 340, 749 345, 749 346, 749 347, 749 348

AR32.22-G-2003L

Remove/install air suspension bellows

01.10.2018

Model

000.069 with rear axle 749.301/305

Model

000.069 with rear axle 749.306/307/320/321/322/330/335/337/340/347/348

with air suspensionHT250

Model

000.069 with rear axle 749.323/336/345/346

with HDB air suspension

Remove/install air suspension bellows

Shown on trailer axle with air suspension HT250

1

Compressed-air line

4

Air suspension bellows

6

Screw

G32.22-3101-11

Danger

Risk of death caused by vehicle slipping or toppling off during lifting

Only lift vehicle at the lift support points specified by the vehicle manufacturer.

AS00.00-Z-0032-01A

Danger

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.

Testing and repair work between the wheel and wheel arch or in the wheel well should only be performed if the vehicle is secured using suitable support fixtures to prevent it from lowering.
Adjustment operations should only be performed from underneath the vehicle.
Use only suitable support fixtures to secure the vehicle frame or vehicle axles in order to prevent them from lowering.
If necessary, additionally use suitable support fixtures in order to prevent other moving vehicle parts that are in the working area from lowering, or use suitable retaining devices to prevent these parts from moving suddenly and without warning.
Secure areas with moving vehicle parts against unauthorized access.

AS32.22-Z-0001-01A

Topical note

Notes on self-locking nuts and bolts

AH00.00-N-0001-01A

Remove/install

1

Raise vehicle and support at frame

Secure vehicle to prevent it moving away.

2

Support axle tube

3

Remove wheel

AR40.10-G-1100K

4

Detach compressed air line (1) from spring bellows (4)

5

Detach spring bellows (4) from upper plate

For this purpose unscrew nuts.

Nut, air spring bellows to top plate

*BA32.22-N-1002-03C

6

Remove air suspension bellows (4)

Depending on the model and design, the piston of the spring bellows (4) can be attached in different ways.

To do so, remove bolts (6) or unscrew nuts.

Bolt, trailing arm to piston of air spring bellows

*BA32.22-N-1001-03C

Nut, trailing arm to piston of air spring bellows

*BA32.22-N-1003-03C

7

Install in the reverse order

Check

8

Check air suspension for leaks

Air suspension

Number

Designation

TRAILER AXLE 749.300/301/305/306/307/308/309/320/321/322/323/324/325/330/334/335/336/337/340/345/346/347/348/349/360/361/368/369 in MODEL 000.069

BA32.22-N-1001-03C

Bolt, trailing arm to piston of air spring bellows

M12

Nm

37

Air suspension

Number

Designation

TRAILER AXLE 749.300/301/305/306/307/308/309/320/321/322/323/324/325/330/334/335/336/337/340/345/346/347/348/349/360/361/368/369 in MODEL 000.069

BA32.22-N-1002-03C

Nut, air spring bellows to top plate

M12

Nm

65

M20

Nm

74

Air suspension

Number

Designation

TRAILER AXLE 749.300/301/305/306/307/308/309/320/321/322/323/324/325/330/334/335/336/337/340/345/346/347/348/349/360/361/368/369 in MODEL 000.069

BA32.22-N-1003-03C

Nut, trailing arm to piston of air spring bellows

M12

Nm

65

M20

Nm

70

Referenced documents