Spicer Lubrication Manual - July 2012 - Manual (Page 14)

Driveline
Lubrication for Slip Splines
Always use a good E.P. grease meeting NLGI Grade 2 specifications on Glidecote™ and steel splines. The same lubricant used for
universal joints is satisfactory for slip splines.
Re-lube splines as the interval prescribed in the “Driveline Lubricants” section. Apply grease gun pressure to lubrication zerk
until lubricant appears at pressure relief hole in welch plug at slip yoke end of spline (Photo 1). At this point, cover pressure
relief hole with finger and continue to apply pressure until grease appears at slip yoke seal (Photo 2). This will insure complete
lubrication of spline.
In cold winter months, activate the slip spline assembly by driving the vehicle sufficiently to cause displacement of the
grease prior to its stiffening. Otherwise, the slip yoke plug may be forced out due to hydraulic pressure causing loss of
grease and allowing abrasive contaminants to enter the slip spline.
Figure 1 Figure 2
CAUTION
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