General Description

Manual transmissions are identified by the number of forward gears and the measured distance between the centerline of the output shaft and the counter gear.

The 6-speed, 85 mm manual transmission (RPO MM6), used in this model, incorporates the following features:
^ An aluminum case.
^ Fully synchronized gearing with an enhanced synchronizer cone arrangement:
- Triple-cone: FIRST, SECOND
- Double-cone: THIRD, FORTH, FIFTH, SIXTH
- Single-cone: REVERSE
^ An internal shift rail mechanism.
^ A remote transmission shift control mounted forward of the transmission.
^ An external transmission shift rod enabling the forward mount location of the transmission shift control.
^ An extended-length transmission output shaft mating directly to the rear axle drive pinion (in the rear of the differential housing).
^ Tapered roller bearings supporting the mainshaft and countershaft.
^ Caged roller bearings under all speed gears.
^ Solenoid inhibit of SECOND and THIRD gears.
^ Solenoid inhibit of REVERSE gear during predefined forward motion.

These features combine to yield a rugged, system capable of handling input torques of up to 610 Nm (450 ft. lbs.).

The gear ratios used in this transmission offer a wide operating range providing excellent acceleration and fuel economy.

The gear ratio are as follows:
FIRST: 2.66
SECOND: 1.78
THIRD: 1.30
FORTH: 1.00
FIFTH: 0.74
SIXTH: 0.50
REVERSE: 2.90