tion in most sections, there are
some sections where extremely low
temperatures are encountered during the winter months. In such
sections it is advisable to add
10% to 20% kerosene.
During the summer months in
sections where the temperature is
very high and the truck is subject to severe service conditions, a heavier
grade of lubricant such as
S.A.E. 140 may be used.
It is not
necessary to change the lubricant with the seasonal changes, however, it is
recommended that the housing
be drained, flushed, and refilled twice a year, or approximately every 6,000
SHIFTER MECHANISM AND
lever on the rear axle is controlled by a hand lever in the cab of the truck and
is connected by rod and
cable linkage to the shifter lever at the rear axle.
installation of the control linkage on the various trucks varies somewhat due to the
difference in Wheelbase. However, the adjustments are the same on all units. Fig. 51 illustrates
1. Check all brackets and U-bolts on the frame
to make sure they are in their
proper position. The brackets
are staked and the cable housings are grooved for the
2. Shift the shifting lever on the axle
differential carrier to the
fully forward position (low ratio). Disconnect the cable clevis from the
3. Disconnect the front adjustable pull rod at
the front end clevis.
4. Loosen the check nut at the back end of the
sleeve passing through the
front support bracket. Unscrew
the sleeve and front adjustable pull rod assembly from the front end
of the second pull rod, just ahead of the rubber boot.