The power shift transmission is coupled to the
torque converter by a universal joint. Gears are
mounted in the power shift transmission on four shafts,
which are as follows:
The REVERSE CLUTCH SHAFT (fig. 6-2) has
a straight roller bearing at each end, with the
reverse driven gear keyed to the front of the
shaft. The shaft consists of first and second speed
drive gears riding on bushings and is welded to
the dual hydraulic clutch pack assemblies.
The FORWARD CLUTCH SHAFT (fig. 6-3)
rotates on straight roller bearings at the rear and
ball bearings at the front, with the reverse drive
gear keyed to the front of the shaft. As with the
reverse clutch shaft. the forward clutch shaft
consists of first and second speed drive gears
riding on bushings and is welded to the dual
hydraulic clutch pack assemblies.
Figure 6-2.Reverse clutch shaft.
The SPLINE SHAFT (fig. 6-4) rotates on two
straight roller bearings. The rear bearing is
mounted in the transmission case; the front
bearing is mounted in the transmission cover.
The first and second driven gears are held in
position on the spindle by snap rings and are
constantly meshed with the first and second
speed drive gears on the clutch shafts. The hi-lo
driving gear slides freely on the shaft and drives
the bevel pinion shaft when brought into mesh
with either the high or low range driven gear by
means of the hi-lo shifting lever.
The BEVEL PINION SHAFT (fig. 6-5) consists
of the high and low range gears, which are keyed
to the shaft. The shaft is supported at the rear by a
straight roller bearing, and, at the front, by a
double-row taper roller bearing. The pinion gear
is splined to the rear of the pinion shaft and is
held in place by a nut. A shim pack is provided
between the front bearing cage and the
transmission case front cover for adjusting
Figure 6-4.Spline shaft.
Figure 6-3.Forward clutch shaft.
Figure 6-5.Bevel pinion shaft.