Catalyst Powertrain
Complete Service and Rebuilds
Allison MT Series Transmission
Catalyst Powertrain is an Allison Transmission authorized service center. We provide reman units, parts, repair, and maintenance for all Allison On Highway Transmissions.
About the Allison Transmission MT Series
The Allison MT series transmission is available as a 4 speed (MT643) or 5 speed (5 speed) unit. Designed for use with large bore gasoline and mid-range diesel engines up to 250 nhp (186 kW). Clutches are multidisc design, oil-cooled, hydraulically-operated, and self-compensating for normal wear. Spur-type planetary gears are designed for strength, quietness, and long life. Automatic lockup clutch, throttle-modulated for maximized fuel economy and enhanced engine braking. Automatic upshifting and downshifting within each drive range.
Built-in inhibitors prevent downshifts or shifts into reverse unless vehicle speed is within an acceptable range.
- Motorhome
- School Bus
- P & D Truck
- Emergency Vehicles
- Refuse Truck
- Stake Truck
- Transit
- Mixer Tanker Truck
- Dump Truck
- Utility Truck
- Municipal Truck
- Snow Plow
- Tractor Trailer
- Flatbed Wrecker
- Short Haul Tractor
- Beverage Truck
Features of the Allison MT Series Transmission
- Fully automatic up to 5 forward speeds
Lockup
Retarder provision
Direct engine mount or remote mount
Power takeoff drive provision
Neutral start, reverse signal, speedometer, and parking brake provision
Multiple Torque converter ratios to mathc engine
3 element torque converter for smooth shock free operation
