If the bolt has 27mm hex head and captive washer... - Saab 900 Bulletin Board - Saabnet.com
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If the bolt has 27mm hex head and captive washer...
Posted by walt [Email] (more from walt) on Thu, 19 Dec 2019 17:35:31
In Reply to: Re: Oil leak from harmonic balancer bolt..., Steven, Thu, 19 Dec 2019 13:08:37
it needs to have 1/2-inch collar between bolt and pulley. The collar prevents bolt from bottoming in its hole in crankshaft. When collar is omitted, the bolt will tighten, but pulley stays loose. This looseness would allow oil leakage down pulley keyway. In a hundred miles or so, the loose pulley will tear out the woodruff key from its crescent shaped slot in crankshaft, causing an expensive repair. If the crank pulley bolt is the older 30mm hex head, there is no collar needed and no chance of bolt bottoming in the hole.
posted by 72.49....
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