PREVOST X3-45 COMMUTER User Manual

SECTION 10: FRONT I-BEAM AXLE
10
DOB 1300-1556 | X3-45 Commuter PA-1648 Maintenance Manual First release Oct 2020
5. REMOVAL AND REPLACEMENT
The following procedure deals with the removal of
the front axle assembly. The method used to
support the axle assembly and suspension
components during removal and disassembly
depends upon local conditions and available
equipment.
5.1 REMOVAL
1. Raise the vehicle by its jacking points on the
body (see Section 18, ‘’Body’’ under
paragraph ‘’Vehicle Jacking Points’’) until
vehicle body is approximately 20 inches (508
mm) from the floor. Place jack stands under
frame. Remove the wheels (if required, refer
to Section 13, ‘’Wheels, Hubs and Tires’’).
CAUTION
Use only the recommended jacking points as
outlined in section 18 “Body”.
2. Exhaust compressed air from the air supply
system by opening the drain valve of each
reservoir.
3. Install jacks under axle jacking points to
support the axle weight.
4. Disconnect the steering drag link from the
steering arm.
5. Remove the ABS sensors from their location
in hubs.
6. Disconnect the height control valve link from
its support on the axle.
7. Disconnect air lines from front brake
chambers, and cover line ends and fittings to
prevent the entry of foreign matter.
CAUTION
Position the air lines and electric wires so they
will not be damaged while removing the front
axle assembly.
8. Proceed with steps a, b and c, while referring
to Section 16: ‘’SUSPENSION’’.
a) Disconnect sway bar links from axle
brackets.
b) Remove shock absorbers.
c) Disconnect five radius rods: one
transversal and two longitudinal from
subframe, and two upper rods from axle.
9. Remove the bolts and nuts fixing the axle to
the left-hand and right-hand side air springs
mounting supports.
10. Using the jacks, slowly lower the axle
assembly, and carefully pull away from
underneath vehicle.
5.2 REPLACEMENT
Reverse front axle “Removal” procedure. Ensure
cleanliness of air bellows support mounting plates.
NOTE
Refer to Section 16, ‘’Suspension’’, Section 14,
‘’Steering’’ and to paragraph 1 ‘’Specifications’’
at the end of this section for applicable checks.
Refer to torque tables at the beginning of this
section for tightening.

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