Traction Control; Steering; Electrical System; Suspension - PREVOST X3-45 Commuter 2020 Operating Manual

9-8 Technical Information
The thermal operating range of the solenoid
control valves is from -40 to 176°F (-40 to 80°C).

TRACTION CONTROL

In service, tag axle will be unloaded when the
system detect wheel spinning. By doing this way,
traction on drive axle is increased. This is an
automatic feature and no driver action is needed.
NOTE
When speed is below 5 Km/h and tag is unloaded,
tag wheels can slip for a short distance when
driver brakes. The reason of this behavior comes
from ABS system, which stop controlling brakes
pressure when vehicle speed is below 5 Km/h.
Therefore, because the same break pressure is
applied on drive and tag axle, the wheels can slip

STEERING

ZF 8098 integral hydraulic assisted steering gear
Hydraulic pump gear driven from engine .
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ZF Servocomtronic variable ratio and
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variable assistance in function of vehicle
speed available.
Hydraulic reservoir and dipstick accessible
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from engine compartment.
System pressure: 2320 psi (160 bars).
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Steering wheel diameter 18". Tilt steering
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wheel and telescopic steering column;
pneumatically locked with foot- operated
switch for adjustment.
Number of turns: 5¾.
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Outside turning radius: see Dimensions and
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Weight table.

ELECTRICAL SYSTEM

24-volt, negative ground;
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12-volt exterior lighting;
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Three 24 volts, 150 amp, self-regulated, belt-
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driven, air-cooled HD 10 Bosch alternators;
Four 12 Volts, group 31 AGM type batteries
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connected in series/parallel. Each one has a
reserve capacity of 205 minutes and a cold
cranking capacity of 1150 amps.
100 amp battery equalizer.
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DOB 1300-1556

SUSPENSION

Goodyear rolling lobe type air springs (bellows)
are used throughout.

I-BEAM AXLE FRONT SUSPENSION

2 Bellows;
2 Shock absorbers;
4 Radius rods;
1 Transverse radius rod;
1 Height control valve;
1 sway bar;

DRIVE AXLE

4 Bellows;
4 Shock absorbers;
3 Radius rods;
1 Panhard rod;
2 Height control valves;
1 Anti-roll bar;

TAG AXLE

2 Bellows;
2 Shock absorbers;
3 Radius rods;
1 Panhard rod;

ALIGNMENT SPECIFICATIONS

Use static wheel alignment systems which work
with angle measurements only, such as Josam or
Hunter systems. Static alignment specifications
are listed in the following tables:
Right
camber
Left
camber
PA-1639 Operator's Manual 2020 X3-45 Commuter
FRONT I-BEAM AXLE
Minimum Nominal
value value
-0.25° 0.125°
-0.25° 0.125°
Maximum
value
0.375°
0.375°