PREVOST X3-45 COMMUTER, Руководство по обслуживанию

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SECTION 16: SUSPENSION
6 DOB 2490-2789 | X3-45 Commuter PA1605 Maintenance Manual (Section 16 revised April 2019)
If shock absorber pins are removed, they must
be reinstalled using “Loctite” (see “Parts
Specifications” in this section).
5. Place the lower and upper mounting pin stud
nuts and torque according to paragraph 13
Torque Specifications.
2.3 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: BALL PIN JOINT CONSTRUCTION
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2.3.1 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 with a new one.
Take off the load from the ball joint by lifting the
vehicle. Apply a load on the joint in all of the
degrees of freedom in an axial, radial, etc. sense
with a suitable lever tool. 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 is to be changed:

Free play between ball pin and housing;

Radial cracking of the external sheet-metal
race (Figure 6)

Any crack or fracture of a metal part

Plastic 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.
Ball pin
External joint shell
Radial cracking of the
sheet-metal race
Partial separation
is permitted
FIGURE 6: BALL PIN BUSHING
2.3.2 Radius Rod Removal
1. Unscrew the nuts (or bolts) at each
extremity of the radius rod.
2. Remove the radius rod.