Belts; Engines; Transmissions; Drive Axle Ratio - PREVOST Motorcoach XL Series Operator's Manual

BELTS

Radiator fan drive (transfer) (series 60 only)
Make: ............................................................ Dayco
Model: ............................................................ AX 74
Qty: ......................................................................... 3
Radiator fan drive (transfer) (series 50 only)
Make: ............................................................ Dayco
Model: ............................................................ AX 73
Qty: ......................................................................... 3
Radiator fan drive (fan)
Make: ............................................................ Dayco
Model: .......................................... Multi-V, 5100510
Qty: ......................................................................... 1
A/C compressor (Driver's and central system)
Make: ............................................................. Gates
Model: ............................................................ BX 97
Qty: ........................................................................ 2
A/C compressor (Auxiliary system, opt.)
Make: ............................................................. Gates
Model: .............................................. Hi-Power A 35
Qty: ........................................................................ 1
Alternator 24 V 270 amps
Make: ............................................................ Dayco
Model: ......................... Multi-V, 23521337 20-6966
Qty: ......................................................................... 1

ENGINES

Detroit Diesel DDEC III Series 60, 12.7 liters inline
6 cylinders, 400 BHP.
Detroit Diesel DDEC III Series 60, 11.1 liters inline
6 cylinders, 325 BHP.
Detroit Diesel DDEC III Series 50, 8.5 liters inline
4 cylinders, 315 BHP.

TRANSMISSIONS

Automatic transmission
Allison six speed automatic World Transmission
B500 or B500R with Electronic Control.
Gear
st
1
...................................................................... 3.51
nd
2 ..................................................................... 1.91
rd
3 ...................................................................... 1.43
th
4 ...................................................................... 1.00
th
5 ...................................................................... 0.74
th
6 ...................................................................... 0.64
Rev ................................................................... 4.80
Converter (Series 60, 12.7 liters)..................1.79
Converter (Series 60, 11.1 liters and Series 50)
..............................................................................2.34
Output retarder ...................................... (Optional)
NOTE:
Gear ratios do not include torque
converter multiplication.
Manual transmissions
Spicer PS145-7A, 7-speed
Gear
st
1 .................................................................... 10.13
nd
2 ..................................................................... 5.99
rd
3 ...................................................................... 3.56
th
4 ...................................................................... 2.57
th
5 ...................................................................... 1.84
th
6 ...................................................................... 1.33
th
7 ...................................................................... 1.00
Rev ................................................................. 10.13
Spicer PS130-6B, 6-speed
Gear
st
1 ...................................................................... 8.53
nd
2 ..................................................................... 4.87
rd
3 ...................................................................... 3.00
th
4 ...................................................................... 1.90
th
5 ...................................................................... 1.33
th
6 ...................................................................... 1.00
Rev ................................................................... 8.53

DRIVE AXLE RATIO

World transmission (Series 60) ............4.89:1 (std)
.............................................................. 4.56:1 (opt)
World transmission (Series 50) .................... 4.89:1
Manual transmissions (Series 60) ........3.07:1 (std)
.............................................................. 3.21:1 (opt)
Manual transmissions (Series 50) ................ 3.21:1
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TECHNICAL INFORMATION
Ratio
Ratio
Ratio