Old idler failed; ready to install new pulley in its proper location on the front of the engine. How do I know what position to put it in; straight up, to the left or right ??? There does not appear to be any defined attachment position that it "automatically" fits into; can be rotated 360 degrees .... ???

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Ben Harrison Carter
1999 Mercedes ML320 87K
1992 Mercedes 300CE 89K
1995 Corvette 29K -- Sold Dec 09
1989 Mercedes 420SEL 99K -- (Sold 4/08)
1968 Mercedes 230S (106K) (Sold 9/06))
1976 Mercedes 450SEL 130K (Just sold - 06)
1961 Mercedes 220Sb (sold years ago)