Spicer Tandem Drive Axle Dual Range & Double Planetary 34,000-45,000 lbs - Manual (Page 18)

FOUR PIECE TANG/DOWEL-TYPE LOCK WASHER SYSTEM (see Fig. 3)
*
First, install the Dowel-type lock washer on the spindle.
Note:
If the dowel pin and washer are not aligned, remove washer, turn it over and reinstall. If required loosen the in-
ner nut just enough for alignment.
IMPORTANT:
Never tighten the inner nut for alignment. This can preload the bearing and cause premature failure.
* Install the Tang-type lock washer on the spindle.
* Install the outer nut on the spindle and tighten to 250
lbs. ft. (339 N m.)
* Verify end-play (see End Play Verification Procedure)
* After verifying end play, secure the outer nut by bending two opposing (180ç apart) tangs of the locking washer
over the outer nut as shown in Figure 5 (below).
10. Install
* New gasket at axle shaft flange.
* axle shaft.
* Axle flange nuts and tighten to specified torque.
11. Lubricate axle wheel ends (see Wheel End Lubrication Procedure)
End Play Verification Procedure
Verify that end-play meets specification using a dial indicator. An indica-
tor with 0.001" (0.03 mm) resolution is required. Wheel end play is the
free movement of the tire and wheel assembly along the spindle axis.
I
a. Attach a dial indicator with its magnetic base to the hub or brake drum as shown below:
With indicator mounted at bottom,
Push/Pull at sides of drum
End Play Adjustment
with Wheel hub
Fig. 4 End Play Measurement
b. Adjust the dial indicator so that its plunger or pointer is against the end of the spindle with its line of action approxi-
mately parallel to the axis of the spindle.
c. Grasp the wheel assembly at the 3 o'clock and 9 o'clock positions. Push the wheel assembly in and out while
oscillating it to seat the bearings. Read bearing end play as the total indicator movement.
* CAUTION: If end play is not within specification, readjustment is required.
End Play Re-adjustment Procedure
Excessive End Play -
If end play is greater than .005' (.127 mm), remove the outer nut and pull the lock washer away
from the inner nut, but not off the spindle. Tighten the inner nut to the next alignment hole of the dowel-type washer (if
used). Reassemble the washer and torque the outer nut. Verify end play with a dial indicator.
Insufficient End Play -
If end play is not present, remove the outer nut and pull the lock washer away from the inner
nut, but not off the spindle. Loosen the inner nut to the next adjustment hole of the dowel-type washer (if used). Reas-
semble the washer and re-torque the outer nut. Verify end play with a dial indicator.
Fine Tuning the End Play -
If, after performing the readjustment procedures, end play is still not within the .001"-.005"
(.025 mm to.127 mm) range, disassemble and inspect the components. If parts are found to be defective, replace the
defective parts, reassemble and repeat wheel bearing adjustment procedure. Verify end play with a dial indicator.
18