B32.22-0054-09
1 | Bellows of the front air suspension | 10 | Bellows support and sealing plate | |
2 | Vehicle frame | 11 | Lower cylindrical bracket | |
3 | Top bracket (embedded in the frame) | 12 | Tower-type bracket fixed to the front axle (supporting the cylindrical bracket with the bellows) | |
4 | Sealing edge of the upper ring on the bracket | 13 | Flanged screw fastening the lower cylindrical bracket | |
5 | Upper sealing edge of the bellows | 14 | Dowel pin of the bracket | |
6 | Threaded nozzle for pneumatic connection | 15 | Front axle of the vehicle | |
7 | Stop pressed onto the support plate | 16 | Flanged screws and nuts securing the bracket to the axle | |
8 | Bottom sealing edge of the bellows | 17 | Front dampers (one in front of and one behind the axle) | |
9 | Sealing edge of the bellows support plate | 18 | Pneumatic tubing and wiring harness |
| Remove | ||
Danger | Risk of death caused by vehicle slipping or toppling off of the lifting platform. | Align vehicle between vehicle lift columns and position the four support plates at the vehicle lift support points specified by the vehicle manufacturer. | |
1 | Place the vehicle on an appropriate lift | ||
2 | Disconnect the negative battery cable or turn off the main switch | For vehicles equipped with electronic engines, always observe the recommendations regarding the care with the vehicle electronics. | |
3 | Remove the wheels | ||
Where a suitable lift is used, remove the wheels is not necessary. | |||
4 | Remove the dampers |
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For additional safety when moving the axle, the dampers can be removed or released from their lower anchors | |||
5 | Completely the pneumatic bellows and manually and carefully disconnect the front pneumatic suspension bellows (1) of top sealing edge (5) of the bellows lower sealing edge (8) | | |
If necessary, move the axle with the lift. | |||
6 | Remove the bellows by pulling it out together with the support plate and bellows seal (10) at the bottom | ||
7 | Disengage the front pneumatic bellows (1) from the bellows sealing and fitting mold (10) | ||
8 | To remove the lower cylindrical bracket (11), remove from inside the flanged screw fastening the lower cylindrical bracket (13) screwed to the turret type bracket on the front axle (12) secured to the vehicle front axle (15) | If necessary, the turret type bracket (12) can be removed. | |
9 | To remove the stop pressed onto the bellows sealing (10) and fitting mold (7), secure the bellows sealing and fitting mold (10) on a vise (with protected jaws) and use an appropriate lever without damaging the sealing edges | For stops with a central hole, observe the safety measures and apply compressed air until it becomes loose | |
Releasing the stop by using compressed requires additional safety measures, since the stop may be thrown at a certain distance, causing injury to the operator. | |||
If the stop is damaged, it may be cut with a chisel. | |||
10 | If necessary, the turret type bracket (12) fastened to the front axle can be removed. To do so, mark the original position, remove the flanged nuts and bolts (16) fastening the bracket to the axle and remove it |
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For all vehicles, before removing the bracket attached to the front axle, it is necessary to remove the dampers and depressurize the bellows. | |||
| Clean | ||
11 | Check upper ring sealing edges on the bracket (4) and bellows sealing and fitting mold (10) at the bottom | If necessary, replace the support plate or the top bracket. | |
12 | Check the status of the vehicle framework (2) and the bellows lower sealing edge (8) | The bellows should be dry cleaned without using any cleaning fluid or solvent. | |
Clean the sealing areas on the metal contact parts, of support and on the bellows sealing edges. | |||
| Check | ||
13 | Check upper ring sealing edges on the bracket (4) and bellows sealing and fitting mold (10) at the bottom. | If necessary, replace the support plate or the top bracket. | |
Check the condition of the front pneumatic suspension bellows (1) and the stops pressed on the fitting mold (7) | |||
| Install | ||
14 | If the turret type bracket supporting (12) the bellows has been removed, install it on the front axle (15). Attend the correct position and install the flanged screws and nuts fastening the bracket on the axle (16) | Evenly tighten the flanged nuts and screws fastening the bracket to the axle (16) in two stages. | |
Flange bolts and nuts on tower type support, supporting the front axle bellows and shock absorber supports | |||
15 | Install the lower cylindrical bracket (11) on the turret type bracket secured to the front axle (12) and tighten the flanged screw securing the lower cylindrical bracket (13) | Tighten the flanged screw fastening the lower cylindrical bracket (13) from the inside. | |
Bottom fixation of the cylindrical support of the front bellow | |||
16 | Press the new stop pressed into the fitting mold (7) at the sealing edge of the bellows fitting mold (9) | Lubricate the stop using the specified sliding fluid. After assembly, clean any lubricant residues from around the components. | |
Lubricant | |||
17 | Slightly lubricate all mechanical sealing parts the bellows, using the specified sliding fluid | Lubricant | |
18 | Manually fit the front pneumatic suspension bellows (1) on the bellows sealing and fitting mold (10), bending it with the palms of your hands | The bellows should at all times be assembled manually, without using mechanical tools. | |
19 | Install the bellows sealing and fitting mold (10) with the bellows mounted on the lower cylindrical bracket (11), and manually fit the bellows on the upper bracket (3) and the upper ring sealing edge on the bracket (4) | The full seating on the top bracket occurs when the bellows are pressurized. | |
20 | Install the dampers if they have been removed, or fasten them to the parts from where they have been released (either top or bottom) |
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Danger | Risk of death caused by vehicle slipping or toppling off of the lifting platform. | Align vehicle between vehicle lift columns and position the four support plates at the vehicle lift support points specified by the vehicle manufacturer. | |
21 | Install the wheels, if they have been removed | ||
Observe the required subsequent retightening. | |||
22 | Carefully lower the vehicle from the lift | ||
23 | Connect the negative battery cable or turn the main switch on | For vehicles equipped with electronic engines, always observe the recommendations regarding the care with the vehicle electronics. | |
24 | Run the engine until it achieves the normal operating pressure, and pressurize the pneumatic bellows | ||
25 | Check potential pressure leaks in the system, using neutral glycerin soap foam or a suitable product for this purpose | | |
26 | Run a test drive | Check the air suspension behavior. |
Air suspension |
Number | Designation | Model 382.17/180/181/182/184/185/186/187, 634.001/011/012/014 | Model 634.061/071/081 | ||
BA32.22-B-1027-03C | Flange bolts and nuts on tower type support, supporting the front axle bellows and shock absorber supports | M12x1.5 | Nm | 92 | 92 |
M14x1.5 - on support | Nm | 134 | 134 | ||
M14x1.5 - Fastening on chassis frame | Nm | 150 | 150 | ||
M16x1.5 | Nm | 225 | 225 | ||
M20x1.5 | Nm | 460 | 460 |
Referenced documents
- ar3225b0105g Remove/install front shock absorber
- ar4010b1101a Remove/install wheels
- as0000z001001a Risk of death caused by vehicle slipping or toppling off of the lifting platform.