Page 59 - BPW axles with air suspension Series O SL AL

Side axle lift device 13.4

Side location is suitable for lifting the front axle of
the suspension unit. The lifting arm is attached to
the front air suspension hanger bracket underneath
the trailing arm. The air bag sits centrally on the
lever arm (V = 0 mm) and is attached under the ve-
hicle chassis trail. Additional lateral supports are not
necessary.The top plate of the lifting bag can be
offset by ± 20 mm.
U

F LB
Depending upon the design, the air pressure to the
lifting bag must be limited by a reduction valve!
Force of lifting bag BPW 30 - p=5.0 bar:
Rubber buffer
5.0 bar
F LB = = 21750 N
0.00023 bar/N (press. in bag)

Force of lifting bag BPW 36 - p=3.5 bar:
Air connection 3.5 bar
M 22 x 1.5 F LB = = 22450 N
Spacer height U 0.000156 bar/N (press. in bag)
+
acc. to tech. doc. V20
Vehicle centre

R Reemmaarrkkss::

When retro-fitting, the bolt in the trailing arm eye
Trailing arm centre FM
must be replaced by a longer bolt (M 30). An in-
stallation drawing is supplied with every retro-fitting
kit.

The positioning and installation of the axle lift de-
vice are to be carried out according to the BPW
technical data and the installation drawing supplied.
The length and orientation of the lifting arm can be
seen in the technical documentation. After installa-
tion, the anti-rotation lock of the spring pivot bolt
(M 30) should be welded to the head.

BPW-EA-Luft 1023701e 59