Equipment Type

Purge U-Joint Grease

Lack of lubrication is the first cause of early failure for universal joints, according to Thomas Koedam, with Dana Corp. He told a group gathered at the Technical Conference of the...

June 01, 2004

Lack of lubrication is the first cause of early failure for universal joints, according to Thomas Koedam, with Dana Corp. He told a group gathered at the Technical Conference of the Association of Equipment Management Professionals (AEMP) they should grease U-joints used in on/off-highway work every 5,000 to 8,000 hours. He stressed the importance of purging recommended grease from all four bearing seals of each U-joint.

"If any of the seals fail to purge, move the driveshaft from side to side while applying grease-gun pressure to the fitting," Koedam says. "As a last resort, back off the bearing cap bolts and pump grease. You must get grease into all four seals."

Bolts in Spicer's full-round yokes with lock strap can be reused. But you must replace the bolts on Spicer's quick-disconnect half-round yokes, or full-round yokes with serrated bolts. Remember to torque the bolts to the manufacturer's specifications.

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