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