PREVOST X3-45 COMMUTER User Manual

SECTION 16 : SUSPENSION
12
DOB 1300-1556 | X3-45 Commuter PA-1648 Maintenance Manual First release Oct 2020
NOTE
If shock absorber pins are removed, they must
be reinstalled using
medium strength thread
locker (Loctite 243 or equivalent).
5. Place the lower and upper mounting pin stud
nuts and torque to specifications.
UPPER & LOWER PINS
TORQUE: 350-400 lb-ft (475-542 Nm)
UPPER & LOWER NUTS
TORQUE: 99-121 lb-ft (134-164 Nm)
3.3 RADIUS RODS
Radius rods are used to secure the axles in the
proper transversal and longitudinal positions.
Five radius rods are provided on the front I-beam
axle suspension (four longitudinal and one
transversal). Refer to Figure 1 and Figure 5 for
details. These rods transmit both braking and
driving forces from the axles to the vehicle body.
FIGURE 5: RADIUS ROD SETUP 16010
FIGURE 6: BALL PIN JOINT CONSTRUCTION 16186
3.3.1 Inspection
1. Clean all parts thoroughly.
2. Inspect radius rods for distortion and cracks.
We recommend the “Magnaflux” process to
detect cracks in the radius rod. Any
damaged part should be replaced with a new
one.
NOTE
New bushings should be used when rods are
replaced.
3. The radius rod bushings should be checked
periodically for signs of shearing,
deterioration, or damage. Any defective part
should be replaced.
Take off the load from the ball joint by lifting the
vehicle. Apply a load on the joint in all six
degrees of freedom (axial, radial, etc) with a
suitable lever bar. After the load is taken off, the
joint has to spring back into its starting position.
Free play is not acceptable.
Separation of rubber from ball pin or sheet metal
race is permissible up to a third of the
circumference.
When the following characteristics are noted, the
joint must be replaced:
• Free play between ball pin and housing;
• Radial cracking of the external sheet-metal
race (Figure 6 & Figure 7)
• Any crack or fracture of a metal part
• Permanent deformation of the sheet metal
race
• Loosened bolt
• Broken bolt
• Loss of bolt
• Circlip (retaining ring) detached from groove
• Broken Circlip
• Loss of Circlip
• Incipient crack
If damage to the inner housing contour or the
Circlip groove is found during replacement of the
molecular bearing, the entire radius rod must be
replaced.

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