Spicer Tandem Drive Axles Service Manual J340-S, J380-S, J400-S, W460-S - Manual (Page 20)

PINION ASSEMBLY
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12. Measure torque to rotate with the torque wrench,
assemble pinion cage into the carrier housing and install
two mounting bolts to anchor the unit. Rotate pinion with
the torque wrench. See Figure 12. Torque measurement
will be taken during fourth revolution and must be
between 10-40 Lb-in (1.1-4.5 N-m) without pinion seal.
NOTE: When torque to rotate reading does not fall within
allowable limits, bearing preload can be increased by using a
thinner spacer or decreased by using a thicker spacer. A .001
in. (.025 mm) change in preload spacer thickness, changes
scale reading by approximately 10 lbs, .001 in. change in
preload spacer will change torque to rotate by approximately
30 Lb- in. This is only a guide, individual carriers may vary
slightly.
NOTE: Closer adjustment can be made by sanding next thicker
spacer to desired thickness using emery cloth on a flat
surface. Surfaces must be parallel to each other and square to
bore diameter.
18
CAUTION: Wash spacer thoroughly of emery cuttings
before installing on pinion.
14. After proper preload is achieved, install new roll pin into
forward carrier pinion. If roll pin cannot be installed,
tighten pinion nut until roll pin can be installed. Pinion
and cage assembly are now ready to be installed into the
carrier housing.
15. After proper preload is achieved on rear carriers, remove
end yoke, and install new seal.
16. Clean and dry threads on pinion.
17. Install pinion oil seal. (See Recommended Service Tools,
Pgs. 35-36)
18. Install end yoke using yoke installer service tool. Coat
threads with Loctite #680 adhesive compound. See
Figure 11.
19 .Use torque multiplier and tighten flanged hex nut to 900-
1,200 Lb-Ft (1,220-1,627 N-m).
Pinion Assembly Complete
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The pinion bearing spacers
are available in the following
thicknesses. Measure spacer with micrometers before
assembly to ensure correct thickness.
J Model W Model
Inches M M Inches M M
.718 18.24 .893 22.68
.719 18.26 .894 22.71
does not align with slots in nut, tighten nut until they are
aligned. Do not install roll pin at this time.
On rear carriers, install end yoke onto pinion using yoke
installer service tool, (See Figure 11 and Recommended
Service Tools Pgs. 35-36), without seal to allow proper
setting of bearing preload. Tighten pinion nut to 900-
1200 Lb-Ft (1,220-1,627 N-m).
NOTE: Pinion cage should be rotated while tightening pinion
nut to seat and align the pinion bearings.