Inspection After Removal

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Move joint up/down, left/right, and in the axial directions. Check for motion that is not smooth and for significant looseness.
Check boot for cracks, damage, and leakage of grease.
Disassemble drive shaft and exchange malfunctioning part if there is a non-standard condition.

Fig 1: Checking Boot For Cracks, Damage And Leakage Of Grease
Courtesy of NISSAN NORTH AMERICA, INC.