Volvo D13 Engine; Allison Transmission; Gear Ratios; Propeller Shaft - PREVOST X3-45 Commuter 2020 Operating Manual

Belt application
A/C compressor - high
capacity HVAC system
Alternator - twin Bosch,
curb side
Alternator - single Bosch,
street side
Coolant pump
NOTE
Belts specifications and configurations may
vary. For proper belt selection, always consult
your vehicle "Coach Final Record" .

VOLVO D13 ENGINE

Type: . . . . . 4-stroke / inline six cylinders
Displacement: 12.8 l, SOHC, 4-valve /cylinder
Power: . . . . . 435 HP
Torque: . . . . . 1665 lbf·ft (2257 Nm) @1050 TO
1300 RPM
Full dress, dry weight: . . . . .2582 lb / 1174 kg

ALLISON TRANSMISSION

Allison B500 (B500R with the optional output
retarder) electronically controlled six- speed
automatic transmission.
Allison B500 (B500R with the output retarder)
electronically controlled six- speed automatic
transmission.

GEAR RATIOS

st
1
................................................
nd
2
...............................................
rd
3
...............................................
th
4
................................................
5 th
................................................
th
6
................................................
DOB 1300-1556
Type Qty
V Belt BX71 2
Multi-V-8 Rib
1
8PK1575
Multi-V-10
Rib 1
10PK1695
Multi- V- 10
1
Rib
10PK1512
3.51
1.91
1.43
1.00
0.74
0.64
PA-1639 Operator's Manual 2020 X3-45 Commuter
Technical Information 9-7
Reverse:
Converter:
Differential ratio (ZF A-132 axle):

PROPELLER SHAFT

Dana Spicer SPL250 type tubular shafts,
provided with heavy-duty universal joints.

BRAKES

The features of the braking system include a dual
system where the front and rear circuits are
completely independent from each other. The
brakes are air operated disc type brakes. The
emergency/parking brakes are located on the
drive axle. To ensure a constant running
clearance between pads and disc, the brakes are
equipped with a non-wearing, automatic adjuster
mechanism.

BRAKE CHAMBER EFFECTIVE AREA

2
Front axle: . . . . . 24 in
Drive axle: . . . . . 24/24 in
2
Tag axle: . . . . . 16 in

AIR SYSTEM

Compressed air is provided by a twin cylinder,
31.8 cfm Wabco, gear-driven, water-cooled and
engine oil lubricated air compressor.

ANTILOCK BRAKING SYSTEM (ABS)

The antilock braking system has one Electronic
Control Unit (ECU) controlling a 6- sensor/5-
modulator (6s/5m) system. A wheel slip sensor is
mounted at each wheel.
The Electronic Control
maintenance free. Its operating voltage is 24 ± 6
volts DC. The thermal operating range for the
ECM is from -40 to 167°F (-40 to 75°C).
The solenoid control valves are maintenance
free. Their operating voltage is 24 (+4.8, - 2.4)
volts DC. The rated current draw is 1.65 amps.
4.80
1.90
3.82
2
(service /emergency)
Module (ECM) is