Page 24 - BPW axles with air suspension Series O SL AL

BPW axles with air suspension

4.5.6 Struts / bolted steel air suspension hanger brackets

Example of struts in bolted steel air G Geenneerraall
suspension hanger brackets.
With the new, bolted Airlight II air suspension han-
ger bracket, BPW is offering the opportunity of pre-
fabricating compact vehicle frames without air
1b
suspension hanger brackets, coating them and not
assembling them to the complete axle unit until the
final assembly stage. The actual configuration is
only defined when it comes to mounting the
suspension units. The bolted system therefore offers
the vehicle manufacturer logistical advantages and
increases flexibility in production.

1 1,, 11aa,, 11bb BBrraacciinngg ppllaattee ssccrreeww ccoonnnneeccttiioonnss
1
The bottom end of the bracing plate (1) is bolted
onto the spring bolt (1a) directly using an M 18 con-
nection bolt with nut (1c, 1d), which therefore per-
mits direct force input. The spring bolt itself is a
special bolt with flange. The flange simultaneously
serves as a torsion lock. The top end of the bracing
plate is bolted onto the cross member of the frame
1c using at least three M 16 10.9 bolts (1b). The holes
in the components must have the following diame-
1a
ters:
1d
Hole in the crossmember: Ø 16 mm
Hole in the bracing plate: Ø 18 mm

2 2 HHaannggeerr bbrraacckkeett bboolltt ccoonnnneeccttiioonnss
Each of the hanger brackets is secured onto the ve-
hicle frame with 5 knurled bolts (comply with the
1 mounting direction!). The knurling on the bolts ser-
ves as a torsion lock. In addition, the special bolts
have a flattened area on their head so they can be
mounted directly adjacent to the hanger bracket.
The flatness of the longitudinal member must be
max. 1 mm in the hanger bracket area. Other details
can be seen in the drawing C-04.00.509610.

5 bolts per hanger
bracket, comply with
the mounting direction. R Reemmaarrkkss::

The torsion lock for the screw connection is a-
chieved using the flange of the spring bolt, there-
fore the bolt must always be attached to the frame
2 of the vehicle using a bracing plate.

24 BPW-EA-Luft 1023701e