Allison 2500 Series

Allison 2500 Series

Category:

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
2500 General780224 (300)895254 (340)15,00015,000
2500 Refuse, On-Highway746224(300)766224 (300)12,00012,000
2500 Non-North America School Bus705149 (200)750164 (220)15,00015,000
2500 MH – Motorhome746224(300)895254 (340)15,00015,000
2500 SPSpeciality VehiclesCONTACT YOUR ALLISON REPRESENTATIVE FOR THE DETAILS

DRIVETRAIN INTERFACES

  • Acceptable full-load engine governed speed: 2200 – 3800* rpm
  • Acceptable engine idle speed range (with transmission in drive): 500 – 820 rpm
  • Maximum output shaft speed at 105 km/hr (65 mi/hr): 4500 rpm

MOUNTING

  • To Engine: SAE No.3, SAE No.2

TORQUE CONVERTER

TYPE: One stage, three element, polyphase. Includes standard integral damper which is operational in lockup.

ModelStall Torque Ratio
TC-2102.05
TC-2111.91
TC-2211.73
TC-2221.58

MECHANICAL RATIOS

(Gear ratios do not include torque converter multiplication)

First3.51 : 1
Second1.90 : 1
Third1.44 : 1
Fourth1.00 : 1
Fifth0.74 : 1
Sixth0.64 : 1
Reverse-5.09 : 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–5l
  • Option 2: 1C–[1l]–2C–2l–3l–4l–5l–6l
Driver-to-Transmission InterfaceCab-mounted shift selector
Communication Protocol – Engine/Vehicle Systems InterfaceSAE J1939, IESCAN, PT-CAN

PHYSICAL DESCRIPTION

Installation LengthDry WeightDepth below transmission centerline
SAE No.3729 mm150 kg
  • With Shallow Oil Sump (Standard): 272 mm
  • With deep Oil Sump (Optional): 285 mm
SAE No.273 mm150 kg
  • With Shallow Oil Sump (Standard): 272 mm
  • With deep Oil Sump (Optional): 285 mm

TURBINE-DRIVEN POWER TAKE-OFF PROVISION

PTO driveTorque converter turbine-driven spur gear
PTO mounting padsSix-bolt, 3 o’clock and 9 o’clock positions (as viewed from rear)
PTO drive gear rating (continuous operation)
  • Using one PTO: 339 N•m
  • Total using two PTOs: 271 N•m
PTO drive gear ratio1.00 x turbine speed
PTO drive gear64 tooth

OIL SYSTEM

Allison approved fluidsTES 295 and TES 389
Capacity, excluding external circuits
  • With deep Oil Pan: 14 litres
  • With Shallow Oil Pan: 12 litres
Spin on canister filterStandard

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: 6-tooth
  • Mounting:  M18 x 1.5 metric thread
  • location: Transmission rear cover