Allison Transmission Servicing, Sales, Spares & Repairs

Allison has the broadest and most advanced range of fully automatic powershifting transmissions for on and off-road applications. Our transmissions are built to be reliable, easy to use, durable and able to match the specific demands of your business.

Founded in 1915, Allison’s years of experience in the transmission industry makes them the partner you can always rely on, just as you can rely on their products to provide years of service. Visit their homepage here.

Allison Transmission, is the world leader in designing, manufacturing and marketing fully automatic transmissions for commercial applications. Allison has a comprehensive transmission portfolio to cover the diverse vocations and chassis types and sizes of commercial vehicles worldwide.

Transmission Model Lookup for Allison Transmission

1000 SERIES – Allison Transmission

Brings superior performance of electronic controls from 6 to 15 tonne vehicle GVW. The engine and transmission communicate by a powerful microprocessor providing precise, perfectly timed shifts whatever the road or load conditions. Standard features include lock-up operation in second to fifth range and helical gearing for reduced transmission noise.

2000 SERIES – Allison Transmission

The 2000 Series transmission is designed for commercial trucks and smaller buses with gross weights up to 15,000 kilos (33,000lbs). The transmission increases torque capacity for higher powered vehicles within a lighter weight package. Adaptive technology ensures that optimum performance is maintained at all times. It also enables the transmission to compensate for variations in driving conditions, such as loads, drivers and traffic patterns. Standard features include the availability of close and wide ratio gearing and a turbine-driven PTO provision with optional neutral lock-up.

3000 SERIES – Allison Transmission

Is flexible enough to work in a wide variety of vehicles, designed with a choice of close ratio for city streets and highway driving and wide ratio for construction and refuse applications. The torque converter results in better startability, particularly on gradients and an optional output retarder provides effective auxiliary and vehicle braking.

4000 SERIES – Allison Transmission

With high horsepower and torque ratings making heavy duty commercial vehicles more productive and easier to drive. With Allison electronic controls a 4000 Series can adapt to operate efficiently in a wide variety of conditions for superior performance in severe applications. Programming options can be set to prevent gear engagement whilst the auxiliary equipment is in operation.

TORQMATIC SERIES – Allison Transmission

An ideal choice for city buses and coaches, advanced electronic controls ensures efficient operation in all kinds of terrain and inner city traffic. The torque converter operation and close ratio gears optimise engine efficiency. The early lock-up engagement with “closed loop” adaptive controls ensures outstanding shift quality.

OFF HIGHWAY SERIES – Allison Transmission

The 5000, 6000, 8000, and 9000 Off-Highway Series transmissions are used in applications requiring 298 kW to 1678 kW (400 to 2250 horsepower) engines. Applications are diverse and include oil-field pumping and fracturing units, off-highway trucks, agricultural tractors, and winch units such as those on derricks and cranes.

5000, 6000, 8000, 9000 Series transmissions have a torque converter and lockup clutch, planetary gear sets, and hydraulic clutches. Further needs are met by optional equipment which may include a hydraulic retarder, parking brake, power takeoff (at various locations), or transfer gear housing (dropbox).

Hydraulic or electronic controls are available on the 5000 and 6000 Series. The 8000 and 9000 Series transmissions utilize manual or automatic electronic controls.

Allison Transmission Service – General Questions

Q: What maintenance procedures should on-/off-highway truck operators follow to ensure a transmission does not fail prematurely? Is it a combination of operating techniques and simple maintenance procedures, or other criteria?

A: Optimum performance and reliability of heavy-duty automatic transmissions can be noticeably influenced by the type of fluid used and the frequency with which that fluid is changed. Allison Transmission Division and General Motors have designed extensive programs including specifications and tests to verify the quality of fluids and consequently have specific fluid and filter change recommendations. These fluid and internal filter change interval recommendations are listed in the respective transmission series operator’s manuals. Additionally, because the transmission fluid cools, lubricates, and transmits hydraulic power, it is important that the proper fluid level be maintained at all times. If the fluid level is too low, the converter, bushings, bearings, and clutches do not receive an adequate supply of fluid. If the fluid is too high, the fluid can aerate. Aerated fluid can cause the transmission to shift erratically or overheat. Additional information regarding fluid/filter change recommendations and maintaining proper fluid level are contained in the MD/HD/B Series Allison On-Highway Transmissions (WTEC III Controls) Operator’s Manual – OM2995EN. Transmission operator’s manuals are available for viewing and download on the worldwide web at Allison Transmission’s web site by clicking on “Products” then“Publications” and entering the appropriate manual’s identification number.

Q: How do electronics assist maintenance technicians? How do the electronic fault finding capabilities work?

A:The World Transmission electronic control system is programmed to inform the operator of a problem with the transmission system and automatically take action to protect the operator, vehicle, and transmission. When the Electronic Control Unit (ECU) detects a problem condition, the ECU restricts shifting, turns on the CHECK TRANS light on the instrument panel, and registers a diagnostic code.

Diagnostic codes are numerical indications relating to a malfunction in transmission operation. Each code consists of a two-digit main code and a two-digit subcode. These codes are logged in a list in the ECU memory with the most severe or otherwise most recent code listed first. A maximum of five codes (numbered d1-d5) may be listed in memory at one time. Diagnostic codes are accessed through the pushbutton and lever shift selectors or the diagnostic data reader. The procedure to retrieve diagnostic codes is listed in the transmission operator’s manual. A maintenance technician will use these codes to determine the source of any potential malfunction and to formulate a suitable repair plan.

Q: What are the dangers of an untrained individual twisting or ‘tweaking’ a transmission? Can a ‘little knowledge’ cause irreparable damage to a system?

A:As in any industrial or commercial setting it is always unwise to allow untrained individuals to perform any kind of work on complicated equipment. In the case of transmission repairs, improper work practices could result in costly rework efforts, excessive vehicle downtime, and diminished customer satisfaction. For example, over-torquing filter cover bolts may result in stripped bolt hole threads, which would require a transmission removal for main case replacement. Improper testing of an electronic control unit may result in damage to the internal circuits requiring its replacement.

Fortunately for the fleet owner or end-user, Allison Transmission has a worldwide network of authorized distributors and dealers trained and equipped to perform a full range of maintenance and repair procedures. Fleet maintenance personnel may also attend training at an authorized distributor or at Allison Transmission’s main manufacturing facility training center.

For our 24-hour on call emergency service, you can contact us by dialling 4932 3200

Q: What are the most common misconceptions surrounding transmission maintenance?

A: The Allison Transmission maintenance schedules stipulate that fluid/filters should be changed after the recommended mileage, months, or hours have elapsed, whichever occurs first. Local conditions, severity of operation or duty cycle may require more or less frequent fluid change intervals that differ from the published recommended fluid change intervals of Allison Transmission. Transmission protection and fluid change intervals can be optimized by the use of fluid analysis.

Q: What are the primary causes of transmission failure for trucks used in the construction/demolition sector? How could failures be avoided?

A: The single most sinificant method for ensuring years of trouble-free service is to perform the recommended transmission fluid and filter maintenance. Some fleet owners have successfully implemented oil analysis programs to monitor and control fluid change intervals as well as provide a means of early detection of pending problems. Additionally, periodic inspections of those truck systems that might directly influence transmission operation such as the vehicle’s drive shaft components, electrical charging system, and the transmission oil cooler/vehicle cooling system, etc. should be performed to ensure that deficiencies in these systems do not lead to a transmission malfunction.

Q: What components in a transmission system are the most sensitive to contamination?

A:Solid particulate contamination may have a detrimental effect on the durability of bushings and roller bearing elements inside the transmission. Additionally, fine particulates may degrade the functionality of components in the control module by causing solenoid valves to fail or clutch apply valves to stick.

The presence of water and/or ethylene glycol coolant mixtures in the transmission oil is detrimental to the reliabilty and durability of the internal components. This foreign liquid has a deteriorating effect on non-metallic components (rubber, gasket material, etc.) and on highly loaded steel parts, such as bearings and gears, due to reduced lubricity. Frictional capacity of drive clutch plates can be greatly reduced, as a result of surface film or impregnation and the presence of glycol will physically deteriorate clutch plate material.

Q: What fluid do I use in my Allison transmission?

A: Follow this link to Transmission Fluid Recommendations.This document includes information about Allison oil recommendations, oil specifications and Allison/Castrol TranSynd™. Other topics discussed are:

  • Fluid recommendations for each transmission model
  • Cold weather vs. fluid viscosity
  • Used oil analysis for improved fluid performance

Q: What is my oil filter part number?

A: You should reference the Parts Catalog for your transmission model. If you do not have a Parts Catalog you can call the Allison Facility near you.

For our 24-hour on call emergency service, you can contact us by dialling 4932 3200

Q: What model transmission is in my vehicle?

A: Check your vehicle/order paperwork. If you cannot find the model designation, call an Allison Distributor or Dealer for assistance. Before calling Allison please have the following information ready:

  • Type of vehicle – motorhome, dump truck, etc.
  • HP of your engine
  • Description of your shift selector
  • Age of your vehicle
  • Serial number of the transmission – if possible (check nameplate on the side of the transmission).

Contact Maitland Diesel for servicing requirements.

Q: Where do I take my Allison transmission for service?

A:Take your vehicle to an authorized Allison Distributor or Dealer. These Allison Facilities may offer full service or provide only simple maintenance on easily accessible components.

For our 24-hour on call emergency service, you can contact us by dialling 4932 3200

Maitland Office
New England Highway,
Rutherford, 2320

Po Box: P.O. Box 392,
Rutherford N.S.W. 2320

Phone: (02) 4932 3200
Fax: (02) 4932 4304

Singleton Office
Rix’s Creek Lane,
Singleton, N.S.W. 2330

Phone: (02) 6571 3100
Fax: (02) 6572 4271

Allison Transmission Vision
Be the world leader in commercial-duty transmissions, hybrid-propulsion systems, and related parts and services for on-highway vehicles, military vehicles, and off-highway equipment. We will earn our Customers’ enthusiasm through continuous improvement driven by the integrity, teamwork, and innovation of Allison people.

Allison Transmission Brand Promise
The Allison Brand Promise is the automatic experience with an unrivaled combination of Quality, reliability, durability, vocational value and Customer service.