Tag Axle Alignment - PREVOST H3-41 Maintenance Manual

SECTION 11: REAR AXLES
4.6

TAG AXLE ALIGNMENT

The tag axle alignment consists in aligning the
tag axle parallel to the drive axle position. Before
aligning the tag axle, proceed with the drive axle
alignment. Tag axle alignment is achieved with
the use of shims inserted between the lower
longitudinal radius rod supports and axle. Tag
axle alignment is factory set and is not subject to
any change, except if vehicle has been damaged
by an accident or if there are requirements for
parts replacement.
CAUTION
If this setting is altered significantly, it will
cause excessive tire wear.
NOTE
It may be necessary to adjust the axle TOE as
well as its alignment. In this case, insert shims
(7 min. - P/N 121203 or 15 min. - P/N 121240)
in between mounting plate and spindle, as
required.
If axle has been removed for repair or servicing
and if all parts are reinstalled exactly in their
previous locations, axle
necessary. However, if the suspension supports
have been replaced or have changed position,
proceed with the following instructions to verify
or adjust the tag axle alignment.
NOTE
For an accurate alignment, the tag axle must
be aligned with the drive axle.
Adjust tag axle according to specifications' chart
below in reference with drive axle. Use static
wheel alignment systems which work with angle
measurements only, such as Josam or Hunter
systems.
20
PA1621 Maintenance Manual All Series | January 2017
alignment is not
TAG AXLE
Alignment / Minimum
value value
Thrust angle -0.02
(deg.)
Total toe (deg.)
0.08° toe-in
FIGURE 16: TAG AXLE ALIGNMENT
Nominal Maximum
value value
0 0.02
0° 0.02° toe-out