4-26. DRIVE LINES, POWER TRAIN - Continued
Dry cleaning solvent P-D-680 (safety or Stoddard's solvent) is potentially dangerous. Avoid
repeated and prolonged breathing of vapors and skin contact with the liquid. Do not use near
open flame, arcing equipment or other ignition sources. Always wear eye protection and
protective clothing. The flash point of P-D-680 is 100 to 138 deg. F (30 to 59 deg. C).
Using dry cleaning solvent (item 10, Appendix E), clean the yokes.
Death or serious injury could occur if compressed air is directed against the skin. Do not use
compressed air for cleaning or drying unless the pressure is/has been reduced to 30 psi (2.11
kg/cm2) or less. When working with compressed air always use chip guards, eye protection
and other personal protective equipment.
After washing, dry the components using compressed air.
Inspect the yokes for damage Replace yoke if any damage is found.
Qualify cross hole alinement using an alinement bar (2, Appendix G)
-Small imperfections can be removed using a hand file or emery cloth (item 13, Appendix E)
-If the alinement bar will not pass through the cross holes, replace the yoke
-Raised metal or a distorted yoke lug is a cause of premature universal joint failure.
Ensure the splined shaft and the splined hole are free of dirt, corrosion or paint. Clean parts if necessary.
Install end yoke onto splined shaft. Ensure that both yokes are in matched position and install a new
Support end yoke (2) in a vise and tighten locknut (1) to 450 ft lb (610 Nm).