PREVOST X3-45 COMMUTER User Manual

SECTION 11: REAR AXLES
14
DOB 1300-1556 | X3-45 Commuter PA-1648 Maintenance Manual Section 11 revised Jan 2021
3.4 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 pl
ate 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 alignment is not
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 chart below in
reference with drive axle. Use static wheel
alignment systems which work with angle
measurements only, such as Josam or Hunter
systems.
TAG AXLE
Alignment / value
Minimum
value
Nominal
value
Maximum
value
Thrust angle
(deg.)
-0.02
0
0.02
Total toe (deg.)
0.08° toe-in
0°
0.02° toe-out

PREVOST X3-45 COMMUTER Specifications

General

Engine	Volvo D13
Transmission	Allison B500
Fuel Type	Diesel
Length	45 ft (13.7 m)
Width	102 in (2.6 m)
Horsepower	500 hp
GVWR	54, 000 lbs
Height	141 in