Spicer Tandem Drive Axles Service Manual D__R440, 460, 480, D_R461, 462, 463, 521, 581, 601, 651, 652, 653 - Manual (Page 46)

42
Power Divider
Measure and Adjust Input Shaft End-Play
Note: After power divider overhaul and installation on carrier,
check and adjust input shaft end-play.
Without Input Shaft Axial Spring Thrust
Button
In September 1988, a axial spring and thrust button were
added between the input and output shafts. End-play toler-
ances are the same for axles with or without this spring and
button. However, end-play measurement procedure is dif-
ferent than described here. Refer to page 44 of this manual
for procedure variances.
The correct end-play when new parts are used in overhaul is
0.003" to 0.007", with reused parts the maximum is 0.14".
1. Remove input shaft nut, flat washer and yoke. Re-
move input bearing cover capscrews. Remove bear-
ing cover (and shim pack if installed).
2. Reinstall bearing cover without shims. Hold in posi-
tion with hand pressure and measure clearance be-
tween power divider cover and bearing cover, using a
feeler gauge.
3. The bearing cover clearance measured in Step 2 plus
0.005" will equal shim pack thickness required for de-
sired end-play (rebuild with new parts). Add 0.015" to
shim pack for rebuild with used parts.
4. Install shim pack and bearing cover. Install cap-
screws. Torque screws to 75–85 lbs. ft. (101–115
N•m). Make sure shims are flat with no kinks or
bends.
5. Install yoke. Tighten nut snugly. Tap end of input
shaft lightly to seat bearings.
6. Check input shaft end-play with dial indicator posi-
tioned at yoke end of input shaft. Move input shaft ax-
ially and measure end-play. If end-play is correct, seal
shim pack with Dana approved RTV compound to
prevent lube leakage. Then torque input shaft nut.
Input Shaft End Play Chart
New or Rebuild
with new parts
0.003" to 0.007" NOTE: Because of manufacturing varia-
tions in individual parts, correctly ad-
justed end-play could vary 0.010", after
the unit is rotated.
Acceptable End-Play Tolerances when measuring as a regu-
lar maintenance procedure with axle in truck.
Up to 0.060" with
over 100,000
miles or 1 year
service off-road NOTE: If end-play exceeds limits, disas-
semble power divider and replace worn
parts.
Up to 0.040" with
less than 100,000
miles or 1 year
service on-road
CAUTION