Allison 4500 Series

Allison 4500 Series

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Description

RATINGS

ModelGross Input Torque(2) N*mGross Input Power(2) kW (hp)Gross Input Torque(2)(3) N*mGross Input Power(2)(3) kW (hp)GVW kgGCW kg
4500 General2237421 (565)2508(4)421 (565)n/an/a
4500 Highway2237421 (565)2508(4)421 (565)n/an/a
4500 Fire Truck, Emergency, ARFF2400447 (600)2508(4)447 (600)n/an/a
4500 Heavy Equipment Transport2237447 (600)2508(4)447 (600)n/an/a
4500 Refuse Vehicles2102373 (500)n/an/a68,500n/a
4500 Ag Spreader, Sprayer, Blower, Feedlot Truck2237421 (565)2400(4)421 (565)68,500n/a
4500 OFS Oil Field Series2237421 (565)n/an/an/an/a
4500 ORS Articulated Dump2102358 (480)2203(4)358 (480)68,500n/a
4500 ORS Rigid Dump2102358 (480)2203(4)358 (480)68,500n/a
4500 SP Specialty / Military2400447 (600)2508(5)447 (600)n/an/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.

ModelStall Torque Ratio
TC-5212.42
TC-5312.34
TC-5411.90
TC-5511.79
TC-5611.58

MECHANICAL RATIOS

(Gear ratios do not include torque converter multiplication)

First4.70 : 1
Second2.21 : 1
Third1.53 : 1
Fourth1.00 : 1
Fifth0.76 : 1
Sixth0.67 : 1
Reverse-5.55 : 1

CONTROL SYSTEM

DescriptionAllison 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 InterfaceCab-mounted shift selector, pushbutton or lever with two-digit display (range selected and range attained)
Communication Protocol – Engine/Vehicle Systems InterfaceSAE J1939, IESCAN, PT-CAN

PHYSICAL DESCRIPTION

Length*Dry WeightDepth below transmission centerline
Basic Model793 mm377 kg375 mm
With PTO Drive Provision866 mm405 kg375 mm
With Retarder793 mm411 kg375 mm
With PTO Drive Provision and Retarder866 mm439 kg375 mm

ENGINE-DRIVEN POWER TAKE-OFF PROVISION

PTO driveEngine-driven helical gear
PTO mounting padsTen-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 Gear97 tooth

OUTPUT RETARDER PROVISION (OPTION)

TorquePower
Low1763 N*m373kW (500 hp)
Medium2170 N*m447kW (600 hp)
High2710 N*m447kW (600 hp)

OIL SYSTEM

Allison approved fluidsTES 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 filterReplaceable element, integral
Cooler circuit oil filterReplaceable 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.