Front suspension |
1 | Front axle of the vehicle |
2 | Lower stringers of the frame |
H1 | Measurement points for the distance between the lower longitudinal member and the front axle |
B32.22-0066-05
Rear suspension (drive axle) on vehicles 382.188/189 and on vehicles 634.0, with the rear axles 746.973/974 |
1 | Mounting clamps of bellows support |
2 | Frame stringer |
3 | Bellows support |
H2 | Distance between the clamps of the axle and the lower face of the longitudinal member |
B32.22-0011-05
B32.22-0004-09
Rear suspension (drive axle) on vehicles 382.188/189 and on vehicles 634.0, with the rear axles 746.218/225/270/271 |
H2 | Distance between the clamps of the axle and the lower face of the longitudinal member |
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. | |
| Check | ||
1 | Put the vehicle in a flat and leveled place, if possible on a proper ditch | Apply parking brake and chock the wheels to prevent that the vehicle moves accidentally. | |
2 | Pressurize the air bellows to the normal working pressure of the vehicle | ||
3 | Calibrate all vehicle tires | ||
| |||
4 | Measure the distance (H1) on front axle | On vehicles with two front axles, the measurement (H1) is the same for both axles. | |
.Normal adjustment height H1 of the front pneumatic suspension with conventional system (Bosch valves) | |||
5 | Measure the distance (H2) on rear driven axle | On vehicles 634.0, it is not necessary to measure the height of the rear trailing axle. | |
On vehicles with trailing axle, the adjustment occurs automatically by means of the height (H2) of the drive axle. | |||
.Adjustment of the rear pneumatic suspension with conventional system (Bosch valve) | |||
Adjust | |||
6 | Adjust the height on front axle (H1) | ||
| Spacer block for vehicle level adjustment | ||
Check the measurement values between the front axle and the lower surface of the longitudinal member on both vehicle sides. | |||
7 | Loosen the nuts of the valve train rods of the level regulation valve, and adjust the rod length until you reach the specified height | .Normal adjustment height H1 of the front pneumatic suspension with conventional system (Bosch valves) | |
8 | Tighten the nuts of the rod | If necessary, lubricate the ball joints of the rods articulation with the specified grease. | |
Grease, DB supply specification 6804 - Class 267.0 | |||
.Level regulating valve rod articulation fastening to the support | |||
9 | Adjust the height (H2) on rear drive axle | ||
| Spacer block for vehicle level adjustment | ||
Check the measurement values between the rear axle clamp and the lower surface of the longitudinal member on both side of the vehicle. | |||
10 | Loosen the nuts of the valve train rods of the level control valve, and adjust the rods length until you reach the specified height | .Adjustment of the rear pneumatic suspension with conventional system (Bosch valve) | |
11 | Tighten the nuts of the rods | If necessary, lubricate the ball joints of the rods articulation with the specified grease. | |
Grease, DB supply specification 6804 - Class 267.0 | |||
.Level regulating valve rod articulation fastening to the support | |||
12 | Carry out a test route | Pass through routes with uneven surfaces. | |
13 | Check again the vehicle leveling | If the measurement value on vehicle is different from the specified height: | |
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Check and replace the worn/damaged components of level regulation, and repeat the previous steps. | |||
14 | Apply chemical seal in the locking nuts of the rods |
Air suspension of the drive rear axle |
Number | Designation | Vehicle 634.011 with rear axle 746.218/225/270/271 with adjustable upper bar | Vehicle 382.185/188/189, 634.011/012/061/071/081 with rear axle 746.218/225/270/271 without Code XF0 | |
BE32.22-B-1006-02A | Adjustment of the rear pneumatic suspension with conventional system (Bosch valve) | mm | 114 | 114 |
Air suspension of the drive rear axle |
Number | Designation | Vehicle 382.177/188/189, 634.011/012/061/071/081 with rear axle 746.218/225/270/271 with Code XF0 | Vehicle 634.001/011 with rear axle 746.973/974 with adjustable upper bar | |
BE32.22-B-1006-02A | Adjustment of the rear pneumatic suspension with conventional system (Bosch valve) | mm | 114 | 120 |
Air suspension of the drive rear axle |
Number | Designation | Vehicle 382.177/178/185/188/189, 634.011/012/061/071/081 with rear axle 746.973/974 with Code XF0 | Vehicle 382.175/176/178/184/185/186/188/189, 634.011/012/061/071/081 with rear axle 746.973/974 without Code XF0 | |
BE32.22-B-1006-02A | Adjustment of the rear pneumatic suspension with conventional system (Bosch valve) | mm | 120 | 120 |
Documenti citati
- ap4015b4060a
- as3222z000101a Pericolo di morte durante l'abbassamento del veicolo effettuando lavori tra le ruote e la sovrastruttura. Pericolo di lesioni per schiacciamento o incastro durante i lavori alle sospensioni pneumatiche.
- wf5850b322201a