Removal; Installation; Radius Rods - PREVOST H3-41 Maintenance Manual

4. Visually check shock for dents that could
cause the shock to bind. Also, check for a
bent rod.
5. Extend and collapse shock several times to
determine that it has control (resistance) in
both rebound and compression.
6. Visually inspect the shock mountings and
vehicle mounting for:
a) Broken mounts;
b) Extreme bushing wear;
c) Shifted bushing or sleeve;
d) Deep cracks in bushing material (shallow
surface cracks are normal);
e) Loose shock absorber pins;
f) Presence of convex washers, and their
position relative to the rubber bushing.
5.2.2

Removal

1. Remove nuts and washers from shock
absorbers on upper mounting pin and lower
mounting bracket, taking care to identify the
inner and outer
reinstallation. Refer to Figure 35 for details.
2. Remove the shock absorber assembly from
pins.
4. Remove the two rubber joints from the
shock absorber and discard them.
FIGURE 39: TYPICAL SHOCK ABSORBER SETUP
washers to ease
16009
PA1621 Maintenance Manual All Series | Section revised October 2018
SECTION 16 : SUSPENSION
5.2.3

Installation

1. Ensure that the shock absorber mounting
pin is tight and that the threads are not
stripped.
2. Install new upper rubber mounting bushings
on shock absorber.
3. On the lower mounting, take care to install
the rubber joints with the wide end of the
tapered hole as shown in Figure 40.
FIGURE 40: LOWER SHOCK MOUNTING BUSHINGS
4. At the upper mounting pin, place the inner
washer with washer convex side facing the
shock absorber rubber bushing.
5. Install the shock absorber eyes over the
mounting pin, then the outer washers (with
washer convex side facing the shock
absorber rubber joints.
NOTE
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 as prescribed in Torque
Table 3.
5.3

RADIUS RODS

Radius rods are used to secure the axles in the
proper transversal and longitudinal positions.
Four radius rods are provided on the drive axle
suspension (three
transversal) and four on the tag axle. These rods
transmit both braking and driving forces from the
axles to the vehicle body.
longitudinal and one
45