5-7. DRIVE SHAFTS, UNIVERSAL JOINTS AND YOKES - Continued
Cleaning and Inspection.
Visually inspect exposed universal joint cross journals and needle bearings in bearing plates. Look
for defects caused by lack of lubrication and physical damage. If corrosion, pitting, universal wear or
missing bearing needles are evident, the universal joint must be replaced.
Dry cleaning solvent P-D-680 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 (38 to 59 deg. C).
Using dry cleaning solvent (Item 3, Appendix E) and a brush, wash universal joint crosses and yokes.
Do not attempt to disassemble or wash bearing plates.
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
After washing, dry the components using compressed air.
Apply a small amount of high temperature grease (Item 15, Appendix E) to each bearing plate needle
Install and test needle bearings on cross journals as shown. The movement must be smooth and
If any component is failing, the complete universal joint must be replaced.