Description
RATINGS
Model | Gross Input Torque(2) N*m | Gross Input Power(2) kW (hp) | Gross Input Torque(2)(3) N*m | Gross Input Power(2)(3) kW (hp) | GVW kg | GCW kg |
4440 General | 1776 | 317 (425) | n/a | n/a | n/a | n/a |
4440 Highway, Fire Truck, Emergency, ARFF, Heavy Equipment Transport | 1776 | 317 (425) | n/a | n/a | n/a | n/a |
4440 Refuse Vehicles | 1776 | 317 (425) | n/a | n/a | n/a | n/a |
4440 Ag Spreader, Sprayer, Blower, Feedlot truck | 1776 | 317 (425) | n/a | n/a | n/a | n/a |
DRIVETRAIN INTERFACES
- Acceptable full-load engine governed speed: 1700-2300 rpm
- Acceptable engine idle speed range (with transmission in drive): 500 – 800 rpm
MOUNTING
- To Engine: SAE No.1
- In Chassis: Rear support available (required for some installations)
TORQUE CONVERTER
TYPE: One stage, three element, polyphase. Includes standard integral damper which is operational in lockup.
Model | Stall Torque Ratio |
---|---|
TC-521 | 2.42 |
TC-531 | 2.34 |
TC-541 | 1.90 |
TC-551 | 1.79 |
TC-561 | 1.58 |
MECHANICAL RATIOS
(Gear ratios do not include torque converter multiplication)
First | 4.70 : 1 |
Second | 2.21 : 1 |
Third | 1.53 : 1 |
Fourth | 1.00 : 1 |
Fifth | 0.76 : 1 |
Sixth | 0.67 : 1 |
Reverse | -5.55 : 1 |
CONTROL SYSTEM
Description | Allison 5th Generation Electronic Controls with closed loop adaptive shifts |
---|---|
Shift Sequences | [C = Converter mode (lockup clutch disengaged); L = Lockup mode (lockup clutch engaged)]
TCM must be calibrated for “1L” option. Second-gear-start calibrations are not available for all vehicle applications. |
Driver-to-Transmission Interface | Cab-mounted shift selector, pushbutton or lever with two-digit display (range selected and range attained) |
Communication Protocol – Engine/Vehicle Systems Interface | SAE J1939, IESCAN, PT-CAN |
PHYSICAL DESCRIPTION
Length* | Dry Weight | Depth below transmission centerline | |
---|---|---|---|
Basic Model | 793 mm | 377 kg | 375 mm |
With PTO Drive Provision | 866 mm | 405 kg | 375 mm |
With Retarder | 793 mm | 411 kg | 375 mm |
With PTO Drive Provision and Retarder | 866 mm | 439 kg | 375 mm |
ENGINE-DRIVEN POWER TAKE-OFF PROVISION
PTO drive | Engine-driven helical gear |
PTO mounting pads | Ten-bolt, 1 o’clock and 8 o’clock positions (as viewed from rear) |
PTO drive gear ratio |
|
drive gear rating (continuous operation) |
|
PTO Drive Gear | 97 tooth |
OUTPUT RETARDER PROVISION (OPTION)
Torque | Power | |
---|---|---|
Low | 1763 N*m | 373kW (500 hp) |
Medium | 2170 N*m | 447kW (600 hp) |
High | 2710 N*m | 447kW (600 hp) |
OIL SYSTEM
Allison approved fluids | TES 295 and TES 389 |
Capacity, excluding external circuits |
|
Main circuit oil filter | Replaceable element, integral |
Cooler circuit oil filter | Replaceable element, integral |
Electronic oil level sensor (OLS) | Standard |
SPEEDOMETER PROVISIONS
- Description: Non-zero-crossing square wave 8, 16 or 40 pulses per revolution of transmission output shaft
- location: Electronic output from TCM.
TACHOGRAPH PROVISION
- Tonewheel: 4 or 6-tooth
- Mounting: M18 x 1.5 metric thread
- Location: Transmission rear cover or retarder housing.