Spicer Drive Axles Failure Analysis Service Manual - Manual (Page 42)

Axle Shafts
41
General Description: Shock damage occurs from overstressing the shaft beyond the strength of the material. The failure can
be immediate (as from a sudden shock) or progressive (as cracking of the shaft surface following the
initial shock).
Usual Causes: • Rough trailer hook-up
• Spinning wheels grabbing on firm road surface
• Misuse of the inter-axle differential lockouts
Failure Prevention: • Vehicle Operation - see Failure Prevention Section