The sleeve in the pivot arm wears out of round. The sleeve is not sold separately.

There was what appeared to be a factory coating inside the sleeve when I replaced mine and for that reason I only lightly lubed it prior to installing. If I were to do it again I'd use more lube.......

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Terry Allison
N. Calif. & Boca Chica, Panama

09' E320 Bluetec 77k (USA)
09' Hyundai Santa Fe Diesel 48k (S.A.)