General information about the hydromechanical box

On car parts «Escort» configurations L, GL and Ghia with the engine of the LPA model, except for the three-door station wagon, on a convertible, and later on «Orion» ATX hydromechanical gearbox was installed (Automatic Transaxle). The gearbox data plate is attached to the valve box cover: the first letter from A to M. except I. indicates the month of manufacture (January to December); 2nd digit - manufacturing number - from 01 to 31; 3rd digit - year of manufacture: 3 - 1983; 2nd line - series number, model and brand. The hydromechanical transmission consists of a torque converter with a planetary gear, two input shafts, a planetary gear of the gearbox, a band brake and three friction clutches and allows the vehicle to move forward in three gears, as well as reverse. Torque transmission is either fully hydraulic (through torque converter), either partly hydraulically and partly mechanically.

In 1st gear and in reverse: 100% via torque converter; in II gear: 38% hydraulically and 62% mechanically; in third gear: 7% hydraulically and 93% mechanically. This significantly reduces power loss due to torque converter slippage. and efficiency transmission increases The selector lever has six positions: P - parking; R - reverse; N - neutral; D - automatic inclusion of I, II and III gears. 2 - automatic engagement of 1st and 2nd gears, 1 - engagement of 1st gear.

To set the selector lever to positions «R» And «R» you need to pull the lever. Do not move the selector lever to the position «R» while the vehicle is moving, and in the positions «D», «2» And «1» while reversing, as well as in positions «2» And «1» above 100 km/h Automatic gear shifting is determined by throttle position and vehicle speed. When you press the accelerator pedal to the stop for maximum acceleration of the car, the forced reverse gear shift system is activated («kickdown»). The starter lock does not allow it to be turned on if any gear is engaged. Pregnant «R» the driven gear of the final drive is locked by the parking brake pawl, which simultaneously enters the gear sector riveted to the differential box.




The thickness of the retaining rings: clutch II gear: 1.24-1.34; 1.51-1.61; 1.78-1.88 mm; clutch III gear 1.26-1.36; 1.58-1.68; 1.90-2.00 mm; reverse clutch: 1.89-1.99 mm.

The thickness of the rings supplied to adjust the differential bearing preload, installed between the bearing cover and its outer ring: 0.30-1.30 mm in 0.05 mm intervals.

The transformation ratio of the torque converter is 2.35.



Oil used: SOM 2C 9010 (cj oil), not compatible with other oils. The total capacity of the gearbox, torque converter and oil cooler is 7.9 liters.

Car towing

A car with a hydromechanical gearbox can be towed at a speed of 30–40 km/h for a distance of no more than 20 km. For long distances lift in front of the car.