Spicer Tandem Drive Axles Service Manual D__R440, 460, 480, D_R461, 462, 463, 521, 581, 601, 651, 652, 653 - Manual (Page 88)

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Wheel Differential Lock
Install and Adjust Wheel Differential Lock, Dual Range Shifters
1. For planetary double reduction axles (on backface
side of ring gear), install sun gear and retainer, then
install capscrews that fasten both retainer and adjust-
er lock capscrews. Tighten screws to correct torque
(see chart), and lockwire all capscrews.
2. For dual range axles and differential lock: Position
shift fork in carrier opening, then install sliding clutch
3. With clutch installed, engage shift fork yoke with
clutch collar. Then install shift fork shaft. Install ex-
pansion plugs to seal openings.
4. Install shift unit seal and spring.
Install and Adjust Ring Gear Thrust Bolt
1. Thread thrust screw into the carrier until firm contact
with the backface of the ring gear is made.
2. Loosen the thrust screw 1/4 turn to obtain the correct
adjustment of .020" (.50 mm) clearance between gear
face and screw. Tighten jam nut, holding thrust screw
stationary with a wrench, torque jam nut 150–190.
lbs. ft. (203–258 N•m).
3. Recheck to assure minimum clearance during full ro-
tation of ring gear.
Planetary Double Reduction Axle
1 - Capscrew
2 - Sun gear retainer
3 - Bearing adjuster
4 - Sun gear
5 - Lock wire
Installing Shift Fork Shaft
2
1
3
4
5
Torque Chart Cap
Differential Bearing
Capscrew Size Grade lbs. ft. N•m
13/16-10 (8) 370 - 430 501 - 583
Bearing Adjuster Lock
and Sun Gear Retainer
Capscrew Size Grade lbs. ft. N•m
5/8-11 (5) 160 - 176 216 - 238
1 - D-head carrier or front carrier
2 - Thrust bolt
3 - Thrust bolt jam nut
1
3
2