My mechanic tells me that the pumps themselves never really break. He's never replaced one.

Instead, the bearings in the pulley go bad.

The dealers here in the U.S. sell a rebuild kit for about $250-ish

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Paul S.

2001 E430, Bourdeaux Red, Oyster interior.
79,200 miles.

1973 280SE 4.5, 170,000 miles. 568 Signal Red, Black MB Tex. "The Red Baron".