SECTION 8
FINAL DRIVE
bearing completely dry, do not spin, with compressed air.
c.
Assembly of Outer Planetary Assembly. Place
Oil bearing with light oil and rotate several times by hand.
the outer planetary assembly on a protective surface with
Discard bearing if rotation is not free of binding and
the large splined hub upward. Note that the outer
clicking. Compare bearing looseness with a new one.
planetary pinions do not have a longer hub as do the
Discard the bearing if there is a considerable difference.
inner planetary pinions. The outer planetary pinions are
The bearing cages must be tight and the bearings free of
symmetrical and can be installed correctly with either side
defects. Wrap bearings in clean paper if they are not to
towards the splined hub (see figure 8-22).
be installed immediately.
d.
Install the snap ring, bearing cups, and bearing
8-10. Discard all seals, snap rings and thrust washers
cones in each pinion gear. Place thrust washer between
that are worn or scored.
pinion gear and planetary carrier on the capscrew side of
8-11. REASSEMBLY AND INSTALLATION OF FINAL
DRIVE ASSEMBLY.
a.
Install the snap ring, bearing cups, and bearing
cones in each pinion gear (see figure 8-20).
b.
Matching the marks on the pinion gear and
planetary carrier install one pinion gear into the planetary
carrier (long hub on pinion gear away from interlocked
sun gear). Place thrust washer between pinion gear and
planetary carrier on the capscrew side of the pinion gear.
Align the gear, thrust washer and planetary carrier and
insert the riding pin. Install the spacer, lockplate and
capscrew. Rotate the planetary pinion gear to insure
proper seating of the bearings and thrust washer. Torque
the capscrews per specification back off one flat and lock.
Then install the other two pinion gears in the same
manner (see figure 8-21).
FIGURE 8-20A.
FIGURE 8-19.
FIGURE 8-20B.
8-7
