JOURNAL CAPS WITH LOCK FLATS (Fig. 36) -
When installing new journal kit caps into yoke ear holes,
the lock flat on two of the journal caps must be kept in
alignment with the locking flats near the front of the yoke
ears. Proper location of locking flats will assure that the
journal cap will not rotate.
The installation of a driveshaft into the vehicle does not
present any unusual mechanical difficulties. Before
actual installation, the drive-shaft should be checked for
the following items:
No damage or dents on driveshaft tubing which
could cause unbalance. If the dents are severe
enough they can weaken the tube and a failure might
occur under torque load.
Splines should slide freely with slight drag from
Bearings should flex and be free from excessive
bind. A slight drag is the most desirable condition on
a new universal joint. This drag is from the bearing
seals. When rotating, yoke lug deflections cause
some additional clearance. Excessive looseness is
not desirable due to the resulting unbalance.
Mounting flanges and pilots should be free from
burrs, paint and foreign substances which would not
allow proper seating at assembly.
The driveshaft is mounted using flange bolts, bearing
capscrews, or "U" bolts depending upon the size and
construction. These bolts must carry high torque loads
and should be of quality material and properly torqued.
The following reviews requirements on these bolts:
Flange Bolts: Flange bolts should be alloy steel
equivalent to SAE Grade 8, high-strength bolts.
These bolts used with spring lockwashers and nuts
provide the capacity.
required. The nuts should be torqued to the
In cap and bolt construction joints (Fig. 7), be sure to
torque the cap-screws to 135.6 N.m (100 ft.lbs.). These
joints are usually in the inter-axle assemblies.
U-Bolt Style Yokes: On smaller size universal joints,
a "U" bolt style end yoke is used. This construction
permits easier assembly where the smaller size
bearings allow its use. The bearing race is seated in
a half round hole and under locating ears. Be sure
that mounting faces are cleaned of rust, paint and
other foreign material. The "U" bolts are assembled
over the bearing races to retain them in the end
yokes. Spring lockwashers and nuts should be used
with these "U" bolts at assembly. The following
torque loads are suggested for use with these parts:
These torque loads are somewhat lighter than
normally used with these thread sizes, how-ever, the
lower torques are required to prevent bearing race
ASSEMBLING SLIP JOINT ON SHAFT
Yoke Lugs in Line
Line Up Arrows
CTS-4017 - Page 19
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