DOB 1300-1556 | X3-45 Commuter PA-1648 Maintenance Manual First release Oct 2020
8. SPECIFICATIONS
ALLISON AUTOMATIC TRANSMISSION
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
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
1
:
6 speed ......................................................................................................................................................... 5.48:1
o Gear ratios do not include torque converter multiplication.
Fluid System:
Fluid type.............................................................................................................. TRANSYND, TES295, TES389
Capacity (excluding external circuits) ....................................................................... Initial fill 47 US qts (45 liters)
Fluid change ........................................................................................................................... 24 US qts (23 liters)
Fluid change (with retarder) ................................................................................................ 28 US qts (26.5 liters)
Fluid Filters:
Make ..................................................................................................................................... Allison Transmission
Type ....................................................................................................................................... Disposable cartridge
1
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
.
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