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Allison 4500 Series

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Allison 4500 Series

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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
4500 General 2237 421 (565) 2508(4) 421 (565) n/a n/a
4500 Highway 2237 421 (565) 2508(4) 421 (565) n/a n/a
4500 Fire Truck, Emergency, ARFF 2400 447 (600) 2508(4) 447 (600) n/a n/a
4500 Heavy Equipment Transport 2237 447 (600) 2508(4) 447 (600) n/a n/a
4500 Refuse Vehicles 2102 373 (500) n/a n/a 68,500 n/a
4500 Ag Spreader, Sprayer, Blower, Feedlot Truck 2237 421 (565) 2400(4) 421 (565) 68,500 n/a
4500 OFS Oil Field Series 2237 421 (565) n/a n/a n/a n/a
4500 ORS Articulated Dump 2102 358 (480) 2203(4) 358 (480) 68,500 n/a
4500 ORS Rigid Dump 2102 358 (480) 2203(4) 358 (480) 68,500 n/a
4500 SP Specialty / Military 2400 447 (600) 2508(5) 447 (600) 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)]

  • Option 1: 1C–[1L]–2C–2L–3L–4L
  • Option 2: 1C–[1L]–2C–2L–3L–4L–5L
  • Option 3: 1C–[1L]–2C–2L–3L–4L–5L–6L

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
  • 1 o’clock position: 1.00 x engine speed
  • 8 o’clock position: 1.00 x engine speed
drive gear rating (continuous operation)
  • Using one PTO: 930 N•m
  • Total using two PTO’s: 1595 N•m
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
  • w/PTO with Shallow Oil Sump: 45 litres
  • w/o PTO with Shallow Oil Sump: 38 litres
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.

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