Spicer Single Drive Axles Service Manual: Single Reduction & Single Reduction with Differential Lock - Manual (Page 12)

9
Differential Carrier
Remove Differential Carrier
Procedure -
1. Block the vehicle.
2. Drain axle lubricant.
3. Disconnect main driveline.
4. Disconnect differential lockout air line.
5. Disconnect lead wires to the selector switch and air
line at shift cylinder.
6. Remove axle shafts.
Diff-Lock Models
• For removal of the locking wheel differential carrier
assembly, the differential lock must be engaged and
held in the engaged position. This can be accom-
plished by one of two methods; either engage via air
pressure or engage manually.
Engage via Air Pressure
• Using an auxiliary air line, apply 80–120 PSI air pres-
sure to shift cylinder air port to engage clutch.
1—Connect 80-120 PSI air line to cylinder port
Engage Manually
• Install a .250 – 18 NPTF bolt over 1.5" long in the
cylinder air port to manually engage the clutches.
GM models require a M12 X 1.5 X 38mm bolt.
Note: Hand-tighten the bolt, over-torquing may cause damage
to the shift unit. To facilitate hand-tightening, coat bolt
threads with axle lube.
1—Hand tighten with socket
2—M12 x 1.5 x 38mm bolt – GM only .250 – 18
NPTF – all models except GM
Note: With either method, the axle shaft may have to be
rotated to permit the clutch to become engaged.
Do not lie under carrier after fasteners are removed. Use
transmission jack to support differential carrier assembly
prior to loosening fasteners
7. To remove axle shaft, remove axle stud nuts. (If
used, remove lock washers and taper dowels.)
8. Remove axle shafts.
Note: All models in this publication use axle shafts with
unequal lengths. Axle shafts may also be location spe-
cific with various wheel equipment. Do not misplace axle
shafts from their intended location. Identify left and right
shafts for reference during reassembly.
TIP: If necessary, loosen dowels by holding a brass
drift in the center of the shaft head and strike drift a
sharp blow with a hammer.
Do not strike the shaft head with a steel hammer. Do not
use chisels or wedges to loosen shaft or dowels.
9. Remove carrier cap screws, nuts and lock washers.
10. Remove differential carrier assembly.
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WARNING
CAUTION