Page 132 - Catalog spare parts BPW LUFT

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BPW Axle lift devices 10

Two-sided axle lifts 10.3
Installation notes 10.3.4

Two-sided axle lift, installation notes

Perform the following installation steps when

retrofitting the two-sided axle lift: O

Take the load off the lifting axle.
SL
Unscrew the spring bolt (M 30) and remove it.
Install the two-sided axle lift as described in the
supplied installation instructions. When doing AL
this, only fi t the spring bolts loose and do
not tighten them yet.
Install the diaphragm cylinder with the air
connection upwards (M = 180 Nm).
Fit plastic plugs into the diaphragm cylinder
so the bottom hole is open whilst the top
hole is tightly closed.

Install the bump stop under the air suspension

hanger bracket (integrated support) in the
position provided for the air suspension

(M = 66 Nm).
Refer to the technical documents for the
corresponding position.

Proceed as follows if you do not have the
corresponding technical documents:
Raise the air suspension using the rotary disc
valve or by disconnecting the air suspension
linkage. Raise it until the air bags are fully
extended.
Pivot the axle lift towards the trailing arm by

hand, until the plastic buffer makes contact
with the trailing arm (the catch plate must be
in contact with the trailing arm).
In this position, fi t the bump stop so it is in
contact with the air suspension hanger bracket
(integrated support).
Adjust the air suspension to the nominal ride
height with the rotary disc in the „driving“
position.
Fit the spring pivot bolt anti-rotation lock.
Tighten the spring pivot bolt screw connection to
the prescribed tightening torque (M = 650 / 900 Nm).
Refer to the appropriate installation guidelines
for the air suspension installation and valve
connection.
Perform a trial actuation to test that it is
functioning reliably. Do not touch any moving
parts of the axle lift when doing this.
DANGER OF ACCIDENTS!
Check the spring bolt screw connection is fi rmly
seated after the fi rst drive under load.

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