PREVOST X3-45 User Manual

Technical Information 117
BELTS
Use Make Model Qty
Radiator fan drive
(transfer)
Dayco AX-71 3
Radiator fan drive
(fan)
Dayco
Poly-V
10/55
1
A/C system
compressor
Gates BX-100 2
Alternator 2 x
28V, 140 Amps.
Detroit
Diesel
Poly-V
10/2232
1
Alternator, 1x
“limp-home”
Detroit
Diesel
Poly-V
10/2000
1
ENGINE
Power is provided by a Detroit Diesel DDEC V
Series 60 engine, displacing 12.7 liters. The
engine is an inline six cylinder, four stroke,
turbocharged, air to air charge cooled, diesel
engine with an overhead camshaft and four
valves per cylinder.
Rated H.P. (BASIC) ..........380 HP @ 1,800 rpm
Rated H.P. (STD).... 435 - 445 HP @ 1,800 rpm
Peak torque................. 1,450 lbf-ft @ 1,200 rpm
Operating range .................... 1,200 – 2,100 rpm
TRANSMISSION
ALLISON TRANSMISSION
Allison B500 (B500R with the optional output
retarder) electronically controlled six speed
automatic transmission.
Gear Ratios
1
st
................................................................3.510
2
nd
...............................................................1.906
3
rd
...............................................................1.429
4
th
...............................................................1.000
5
th
...............................................................0.737
6
th
...............................................................0.639
Reverse......................................................4.801
Converter....................................................1.578
Differential ratio ............................................4.30
Differential ratio (optional)............................4.10
Differential ratio (optional)............................4.56
Differential ratio (optional)............................4.88
ZF-ASTRONIC TRANSMISSION
Electronically controlled ten speed automatic
transmission.
Gear Ratios
1
st
.................................................................7.44
2
nd
.................................................................5.78
3
rd
.................................................................4.57
4
th
.................................................................3.55
5
th
.................................................................2.70
6
th
.................................................................2.10
7
th
.................................................................1.63
8
th
.................................................................1.27
9
th
.................................................................1.00
10
th
...............................................................0.78
Reverse......................................................11.41
Differential ratio............................................3.73
Differential ratio (optional)............................3.42
Differential ratio (optional)............................3.58
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 with
automatic slack adjusters on front, drive and tag
axles The emergency/parking brakes are located
on the drive and tag axles only.
BRAKE CHAMBER EFFECTIVE AREA
Front axle ...................................................24 in
2
Drive axle ..........24/24 in
2
(service / emergency)
Tag axle ............14/16 in
2
(service / emergency)
AIR SYSTEM
Compressed air is provided by a 15.8 cfm
Bendix-Westinghouse BA-921 one cylinder,
gear-driven, water-cooled and engine oil
lubricated air compressor.
Other features and components of the air
system include an air dryer and nylon color-
coded air lines.
ANTILOCK BRAKING SYSTEM (ABS)
The antilock braking system has one Electronic
Control Unit (ECU) controlling a four channel
system. A wheel slip sensor is mounted at each
front axle and drive axle wheel. The Tag axle
wheels are slave to the drive axle wheels.
The Electronic Control Module (ECM) is
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).

PREVOST X3-45 Specifications

General

Brand	PREVOST
Model	X3-45
Category	Buses
Language	English