PREVOST X3-45 COMMUTER User Manual

SECTION 16 : SUSPENSION
18
DOB 1300-1556 | X3-45 Commuter PA-1648 Maintenance Manual First release Oct 2020
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.
4.2.2 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 washers to ease
reinstallation. Refer to Figure 13 for details.
2. Remove the shock absorber assembly from
pins.
4. Remove the two rubber joints from the
shock absorber and discard them.
FIGURE 13: TYPICAL SHOCK ABSORBER SETUP 16009
4.2.3 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 14.
FIGURE 14: 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
medium strength thread
locker (Loctite 243 or equivalent).
6. Place the lower and upper mounting pin stud
nuts and torque to specification.
UPPER PIN
TORQUE: 350-400 lb-ft (475-542 Nm)
UPPER NUT
TORQUE: 99-121 lb-ft (134-164 Nm)
LOWER NUT
TORQUE: 60-75 lb-ft (81-102 Nm)
4.3 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 longitudinal and one
transversal) and four on the tag axle. These rods
transmit both braking and driving forces from the
axles to the vehicle body.
Refer to section 2.3 for more information
regarding radius rods.

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