Page 56 - Catalog spare parts BPW LUFT

Auto Parts / BPW-EL-Luft 31051601e Page 55

Spring pivot bolt bearings 3

General

Spring pivot bolt bearing from week 18/2004
onwards
From week 18/2004 onwards, the functional principle of O
the loose wear plates familiar in Airlight II hanger brackets
was also be carried across to the rigid air suspension
hanger brackets for 100 mm wide trailing arms.
SL

Loose wear plates offer the following advantages:

Simplified mounting, because the wear plates are AL
not inserted in the bracket until the trailing arm has
been positioned in the bracket.
This means there is significantly more installation
space available at the start of the installation
procedure.
Preinstalled air suspension modules can therefore be
installed in the vehicle frame much easier thanks
to the brackets which are already welded on.
A practical design of the wear plates thanks to the
insertion offset and height limitation ensures that
the installation proceeds smoothly
Mixed installation is technically possible (brackets

with loose wear plates or with welded wear plates).

Wear plates

BPW uses two different versions of wear plates.
1. A straight shaped plate for straight hanger brackets,
integrated supports and frames
BPW Code no.: 03.164.35.04.0 - M 24
03.164.35.01.0 - M 30
2. An offset shaped plate for angled hanger brackets

BPW Code no.: 03.164.35.03.0 - M 24
03.164.35.02.0 - M 30

Spring pivot bolt Ø 24
Since week 30/2007 air suspension modules (Airlight II)
was only available with Ø 24 mm trailing arm bushes and
spring pivot bolts.

Introducing an M 24 spring pivot bolt provides greater
security due to higher bolt tension being achieved. In !
addition the surface area of the clamped interfaces is
increased. This means the bolted connection has been
made even less susceptible to settling.
The tightening torque (with torque wrench!) for Airlight II
integrated supports and air suspension hanger brackets
is reduced from 900 Nm (840 - 990 Nm) for the M 30
spring bolt to 650 Nm (605 - 715 Nm) for the M 24 spring
bolt.

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