Page 49 - BPW axles with air suspension Series O SL AL

Track correction for air suspension axles with standard hanger bracket 9.4

G Geenneerraall
Series SLO / SLM / ALO / ALM
It is necessary to check the tracking accuracy dur-
ing installation as well as after repairs on axles,
brackets or trailing arms.
If a track correction is necessary, it can be carried
out as follows:
Tracking plate The diagonal measurements must be checked as
described in page 46.
Welded after track
setting a 4 x 80
T Trraacckk ccoorrrreeccttiioonn

1. Raise and support the vehicle frame
2. Exhaust the air out of the air bags
3. Loosen the spring U-bolts
4. If necessary, grind off the weld seam on the
tracking plate and spring seat
5. Align the centre axle (reference axle)
Series SLU / ALU
6. Tighten U-bolt lock nuts uniformly and alter-
nately (see page 51 for tightening torques)
7. Check the track settings of the front and rear
axles and re-align if necessary
8. Tighten spring U-bolt lock nuts uniformly and
alternately and weld tracking plates to the
Tracking plate spring seats
9. Remove supports from underneath the vehicle
and inflate the air bags

Welded after track
setting a 4 x 80

O Onn AAiirrlliigghhtt IIII aaiirr--sspprruunngg aaxxlleess::
Maintenance-free axle connection, do not
unfasten the spring U-bolts.

I Immppoorrttaanntt ffoorr aallll wweellddiinngg wwoorrkk!!
The trailing arms, air bags and plastic pipes
must be protected against flying sparks and
weld spatter during all welding work. The earth
terminal must never be attached to the trailing
arm or the hub. DDoo nnoott ppeerrffoorrmm aannyy wweellddiinngg oonn
t thhee ttrraaiilliinngg aarrmmss!!

BPW-EA-Luft 1023701e 49