Page 35 - BPW axles with air suspension Series O SL AL

Installation guidelines 7.1

G Geenneerraall
Bolted on at ride height
As a rule, air suspension axles are installed with the
vehicle frame on its back.
Ride height

Welding M Moouunnttiinngg aaxxlleess aanndd aaiirr ssuussppeennssiioonn aasssseemmbblliieess

Air suspension axles with mounted trailing arms and
Hub flange
hanger brackets are generally picked up at the hub
Aligning with the kingpin / flange, arranged according to the vehicle design and
steering turnplate aligned accurately in relation to the longitudinal cen-
tre line of the vehicle by means of the middle of the
kingpin or steering turnplate. The centring aid on
Conical holder for the hub flange differs between lightweight hubs and
conventional wheel conventional hubs. The hanger brackets are welded
hubs (closed flange)
onto the bottom flange of the vehicle frame.

M Moouunnttiinngg lloooossee aaiirr ssuussppeennssiioonn hhaannggeerr bbrraacckkeettss

It is also possible to attach loose, hanger brackets
separately. In this case, the spring bolt mounting
points of the hanger brackets are aligned in relation
to the longitudinal centre line of the vehicle by
means of the middle of the kingpin or steering turn-
plate.
In this installation position, the tolerances of the
spring centres and trailing arm lengths must be ta-
ken into account. The hanger bracket position in the
sideways direction must be kept within the toleran-
ce range FM (0, +2) to avoid stresses in the axle
unit. Check the track and correct if necessary after
welding on the hanger brackets or mounting the ax-
Welding les (see pages 44, 45).

R Reemmaarrkkss::
Aligning with the kingpin /
steering turnplate H Heeaattiinngg tthhee aaiirr ssuussppeennssiioonn hhaannggeerr bbrraacckkeettss ffoorr
s sttrraaiigghhtteenniinngg wwoorrkk iiss nnoott ppeerrmmiitttteedd
DIRECTION OF TRAVEL

+2
Spring centre FM 0 I Immppoorrttaanntt ffoorr aallll wweellddiinngg wwoorrkk!!
The trailing arms, air bags and plastic pipes must
be protected against flying sparks and weld spat-
ter during all welding work. The earth terminal
must never be attached to the trailing arm or the
hub. Do not perform any welding on the trailing
arms!

BPW-EA-Luft 1023701e 35