Manual Transmission

Manual Transmission
The M50D is a 5-speed manual transmission equipped with the following features:
^ An aluminum main case, extension housing and shift control housing.
^ The countershaft is serviced as an assembly.
^ All gears are helical cut, including reverse.
^ All shift rails are mounted in the shift cover. Detents are used to hold the shift forks in their selected positions. Interlocks prevent engagement of more than one gear at a time.
^ All gear changes are accomplished with synchronizer sleeves.
^ Is synchronized in all gears.
^ Special extension housing and output shafts for four wheel drive (4WD) vehicles.

The function of the transmission is to move the vehicle from a rest position to motion. This is done by transferring the engine torque to the vehicle's rear wheels. This power (torque) is delivered from the engine's flywheel to the transmission. It is transmitted through a driver-operated clutch, which allows for engagement and disengagement of the engine to the transmission.

The transmission input shaft receives the power when the clutch is engaged. It is transferred through the input shaft to the drive gear. Torque is transferred to the countershaft drive gear and is delivered along the countershaft to all the countershaft gears. Torque is then transferred to the engaged mainshaft gear.

The transmission then uses a system of gears to change the speed and torque relationship between the engine crankshaft and the transmission output shaft.

Transmission Identification
The Vehicle Safety Compliance Label (located on the driver door lock pillar) lists applicable transmission identification codes. For information on codes, refer to Vehicle/Application and ID.

Manual transmissions are also equipped with service identification tags. The M50D-RI tag is located on the driver side of the transmission.