Propeller Shaft; Front Axle - Jeep CJ-3A Owner's Manual

The shifting mechanism is located on the transfer case for engaging and disengaging the drive to the front axle, also for
shifting the gears.
On hard surface and level roads, disengage the front axle drive by placing the transfer case left shift lever in the forward
position. See Fig. 3. The right hand lever controls the gear ratio; low and high. The low gear can only be engaged when the
left hand lever is in the engaged (rear) position for front drive. Proper position for disengaging axles to use the power
takeoff with the vehicle standing is shown as "N" in Fig. 3 of "Drivers Instructions."
Both the transmission and the transfer case are precision built units. No external adjustments are possible and should
attention be necessary, it is advisable to consult your Willys-Overland Dealer.
IMPORTANT: Check the units at each lubrication to guard against lubricant leakage. For economy the capacity is small
change the lubricant in accordance with instructions on Page 18.

PROPELLER SHAFT.

The drive from the transfer case to the front and rear axles is completed through two propeller shafts each equipped with
two universal joints. The splined slip joints at the transfer case end of each shaft allows for variations in distance between
the transfer case and the axles, due to spring action.
Examine both propeller shafts periodically for foreign matter which may become wrapped around them. Check for dents or
a bent shaft and make sure that the universal joints attaching bolts are tight at all times.
The universal joints have needle type bearings and are so designed that correct assembly is very simple. No hand fitting or
special tools are required.
The journal trunnion and needle bearing assemblies are the only parts subject to wear, and when it becomes necessary to
replace these parts, the propeller shafts must be removed from the vehicle to make replacement.
When reinstalling, note that the slip joints are marked with arrows, Fig. 24, at the spline and the sleeve yoke. Align the
arrows so the yokes of the universal joints at the front and rear of each shaft are in the same plane, when assembled, to
avoid vibration. The "U" type attaching bolt nuts should be tightened evenly with approximately the same pressure on each
nut.
FIG. 24—ARROW MARKING

FRONT AXLE.

The front axle is a live driving unit with hypoid drive gears, Fig. 26, and spherical steering knuckles, Fig. 25, containing
constant velocity type axle shaft universal joints.
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