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5-6
flAN GE BEAR ING
CUP RUN().JT
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.
003
.001
1
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GROUP
5-DRIVE LINE AND CLUTCH
Co.eiNEO RUNOUT
.009
.008
.007
.006
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OfiiiVE SHAF T UN IVERSAL
CROSS
SI1AF
T
RUN OUT
--
006
005
003
001
001
000
12. If the runout is still exces-
sive, replace the companion flange
and recheck runout. If necessary,
rotate flange on pinion shaft until
acceptable runout
is
obtained.
13.
If excessive runout
is
still
evident after replacement of the
companion flange, it will be necessary
to replace the ring and pinion gear
and repeat the above
checks
until
runout is within specifications.
Lateral runout of the pinion drive
flange universal joint bearing cup
seats, can be measured in the fol-
lowing
manner.
1.
Using the modified universal
joint described in the preceding
paragraphs, measure the outside dia-
meter of the two opposite cups and
note any variation; mark the larger
cup. In this case it is preferable to
obtain two
cups
of the exact same
size. Remove the remaining bearing
cup.
2.
Rework two universal joint
U-boltsfclamp plates as shown is
Fig. 8, i.e. grind half the fiat
surface away.
3.
Raise the vehicle on a frame
contact hoist or jack the rear of the
vehicle and fit body stands .
4.
Fit the universal joint into
the flange with the relieved portion
of the U-bolts/clamp plate toward
the centre of the flange (refer
Fig.
8) .
5. Mount a dial gauge from the
differential housing so that the stylus
contacts the smaller of the universal
joint bearing cups.
FIG. 7
Runout Chart
6. Rotate the flange slightly until
the dial gauge indicates the highest
point of the cap. Zero the dial gauge.
FIG.8
-
Universal U-bolts
reworked
assembly in the manner described,
the above checks can be made with-
out the rework. This can be accom-
plished by taking readings on both
ends of the cross shaft. However, it
wili be necessary to take two com-
plete sets of readings in order to
eliminate any possible dimensional
errors in the cross shaft from affect-
ing the companion flange runout
readings. The second set of readings
must be read with the universal joint
assembly rotated
180°
on the com-
panion flange.
10.
If the reading obtained in
Step
'9'
exceeds specifications, re-
position the:: companion flange on the
pinion shaft
180°
and repeat Steps
'4' through '9'.
11. If the repeat readings still
exceed specifications, reposition the
flange an additional90
°
on the pinion
shaft and recheck runout.
7. Lift the dial gauge stem suffici-
ently to allow clearance as the flange
is rotated through
180°
to the
opposite cup.
8. Lower the stylus onto the cup
and rotate the flange until the highest
point of the cup is indicated. Note
the dial gauge reading and subtract
the cup variation as in Item
'1'.
9. Repeat Steps '6', '7' and '8' at
least three times and average the
result.
If the average measurement is
greater than
.
002 inches, a new
flange should be fitted and again
checked to this procedure.
DRIVESHAFT RUNOUT CHECK:
Check the driveshaft runout
5"
from each end and in the middle of
the shaft. Driveshaft runout should
not exceed
.
020" at any of the three
checking points.
Many times a vibration condition
can be reduced to an acceptable level
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