Spicer Driveshafts Service Manual - Manual (Page 34)

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Glossary
Universal Joint - A mechanical device which can transmit
torque and/or rotary motion from one shaft to another at fixed
or varying angles of intersection of the shaft axes. Consisting
of a journal cross, fitting and four bearing cup assemblies.
Universal Joint Kit - See Universal Joint.
U-Joint - Universal Joint with installation hardware.
Welch Plug - A plug in the slip yoke face that seals off one
end of the spline opening. Also known as a slip yoke plug.
Weld Yoke - See Tube Yoke.
Yoke Lug Ear Cross Hole - See Cross Hole.
Yoke Shaft - A slip member yoke with a male machined spline
used for axial movement.