Transmission General Description

Transmission General Description

Allison 1000 Series transmissions are torque converter driven, fully automatic, transmission systems. The 1000 Series transmissions have 6 forward speeds, NEUTRAL, and REVERSE. The fifth and sixth range has overdrive gear ratio. The 1000 Series incorporates a variety of standard and optional design features. These design features include the following:

* Direct mount to engine block
* Flexplate drive
* Torque converter with a torque converter clutch (TCC) and integral vibration damper
* 3 constant-mesh planetary gear sets with helical gears
* 5 multiple disk clutches - 2 rotating and 3 stationary
* Common hydraulic system for all transmission functions
* 2 transmission fluid filtration systems
* Electrohydraulic control valve assembly
* Electronically controlled automatic gear selection and clutch apply
* Fill tube/dipstick provision on both sides of transmission
* Parking pawl
* Power takeoff (PTO) provision on both sides of transmission