Drivetrain Systems International BTR M74LE

Transmission general data

The 4-speed automatic transmission BTR M74LE with a longitudinal positioning for RWD vehicles was designed in 1988 by BTR company on commission from a Korean automaker SsangYong for its flagship SUV Korando. In 1989, this RWD transmission was launched in mass-production. In most cases, the M74LE transmission was mated with 2-3-liter engines and found application in RWD SsangYong models - Rexton, Actyon, Korando etc. The 6-speed automatic transmission DSI-6 \ M78LE (M96) was developed in 2008 by specialists of former BTR bureau with a new Chinese owner Geely under a new brand DSI. It is more advanced modification of the 6-speed automatic transmission with a longitudinal positioning paired with the 2-liter engines SsangYong Actyon.

Technical issues and repair guidelines

In most cases, М74 and М78 transmission models require ATF change and filter replacement during the overhaul. In addition, specialists usually order the pan gasket. For reassembly of М78 (and М74) specialists order the repair kit of gaskets and seals /Overhaul kit and a complete kit of friction components. Brake bands (Intermediate (Direct, High/ Reverse) ) are also considered to be spare parts for this transmission. The rear brake band is replaced in case of burnt fluid and uneven wear-out and the band clearance, in order to exclude kicks in the process of gears shifting.