Manual Transmission: Notes

WARNING: This page is about a different car, the 2010 Ford F550 Super Duty and 2010 Ford F450 Super Duty. However, it is still accessible from the selected car via links, so may be relevant.

The Tremec TR-4050 transmission has 5 synchronized forward speeds and 1 synchronized reverse speed. The TR-4050 transmission has the following features:

An integral clutch housing
An aluminum main case
The mainshaft with 2 tapered roller bearings. Mainshaft end play is controlled by a selective shim located behind the front bearing retainer
The countershaft with 2 tapered roller bearings. The countershaft end play is controlled by a selective shim located behind the rear bearing retainer
A countershaft that is serviced as an assembly
Is synchronized in all gears
All gears are bevel cut
All gears, including reverse, turn on needle or roller bearings
Single-piece shaft forks with moly-coated pads
Provisions for mounting a Power Take-Off (PTO)

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 rear wheels. The transmission uses gears to adapt the torque to the demands of load and road conditions. It matches engine power to vehicle needs.

This power is delivered from the engine flywheel to the transmission. The power 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 mainshaft gears to change the speed and torque relationship between the engine crankshaft and the transmission output shaft.