General information about manual transmission (BMW 7 Series E38)

The gearbox is placed in a cast housing, attached to the left end of the cylinder block. The gearbox housing is equipped with holes for draining, checking and adjusting the oil level, closed with plugs.

Rotation is transmitted from the engine crankshaft through the clutch assembly to the primary (drive) shaft of the manual transmission. The primary shaft is equipped with splines on which the driven clutch disk is installed. From the primary shaft, on which all the drive gears are located, rotation is transmitted to the secondary (driven) shaft of the manual transmission, on which the driven gears of all gears are located. All gears are synchronized. From the secondary shaft, rotation is transmitted through the cardan shaft to the main gear and differential, from which the drive shafts are driven. Free rotation of the differential satellites on their axles allows the inner wheel to rotate more slowly than the outer wheel when turning. The primary and secondary shafts of the box are located parallel to each other, as well as parallel to the crankshaft and cardan shafts.

Gear shifting is performed using a gear selector lever mechanism mounted on the floor of the passenger compartment. The mechanism consists of a set of shift forks, with the help of which the sliding clutches of the synchronizers move along the shaft, locking the gears of the corresponding gears.