Specifications - PREVOST H3-41 Maintenance Manual

SECTION 07: TRANSMISSION

11. SPECIFICATIONS

ALLISON AUTOMATIC TRANSMISSION WITH OR WITHOUT RETARDER
Coaches & Commercial use
Allison B500
Gross input power (maximum) ................................................................................................... 500 HP (335 kW)
Gross input torque (maximum) .......................................................................................... 1525 Lbf-ft (2068 Nm)
Rated input speed (minimum-maximum) ..................................................................................... 1600-2300 rpm
X3-45 VIP, H3-45 VIP motorhomes. Private use
Allison MH4000
Gross input power (maximum) ................................................................................................... 525 HP (392 kW)
Gross input torque (maximum) .......................................................................................... 1650 Lbf-ft (2237 Nm)
Rated input speed (minimum-maximum) ..................................................................................... 1600-2300 rpm
Mounting:
Engine .................................................................................................... SAE #1 flywheel housing, flex disk drive
Torque converter:
Type ............................................................................................................ One stage, three element, polyphase
Stall torque ratio .................................................................................................................................... TC 551-1.8
Lockup clutch with torsional damper ........................................................................................... Integral/standard
Gearing:
Type .................................................................................................. Patented, constant mesh, helical, planetary
Ratio:
First ............................................................................................................................................................... 3.51:1
Second .......................................................................................................................................................... 1.91:1
Third .............................................................................................................................................................. 1.43:1
Fourth ............................................................................................................................................................ 1.00:1
Fifth ............................................................................................................................................................... 0.74:1
Sixth .............................................................................................................................................................. 0.64:1
Reverse......................................................................................................................................................... 4.80:1
Total coverage 3 :
6 speed ......................................................................................................................................................... 5.48:1
Gear ratios do not include torque converter multiplication.
o
Oil System:
Oil type ................................................................................................................. TRANSYND, TES295, TES389
Capacity (excluding external circuits) ....................................................................... Initial fill 47 US qts (45 liters)
Oil change ............................................................................................................................... 24 US qts (23 liters)
Oil change (with retarder) ................................................................................................. 27.6 US qts (26.5 liters)
3
Total coverage is determined by dividing the highest gear ratio by the lowest gear ratio. Total coverage expresses the transmission
.
gear ratio versatility. Transmissions with a larger total coverage number have a wider variety of available ratios
71
PA1621 Maintenance Manual All Series | January 2017