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SN95 Cobras
Rear-end question...
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<blockquote data-quote="ReefBlueCoupe" data-source="post: 12074032" data-attributes="member: 5047"><p>- Pinion seal* - not flange</p><p> - The part is around $10 from Ford</p><p> - 8.8's aren't singled out as "known to leak from the flange" - any rear end with a pinion seal can leak. </p><p> - A new one isn't guaranteed to stop the leak, as nothing in the world can be assured 100%, but in 999 out of 1000 cases, replacing a leaking pinion seal on an otherwise healthy rear end will stop the leak.</p><p></p><p>If he did not replace the pinion bearing and it has some play, that could cause early failure of a new pinion seal. Did he replace the pinion bearings and seal? Did you ask him to? From the sound of it, this was not discussed.</p><p></p><p>If the seal wasn't lubed with a light amount of gear oil before the yoke is reinstalled, the dry seal could be overheated by the dry yoke and could cause early failure of the pinion seal.</p><p></p><p>Solution: He just built the rear end. If the pinion seal is already leaking (you didn't say specifically how long ago it had been), he should replace the seal at his cost. Unless of course you supplied the parts, then you should be responsible for the new seal and replacement labor. This is standard among shops as far as them vs you supplying parts.</p><p></p><p>A pinion seal should last tens of thousands of miles before any leak occurs.</p></blockquote><p></p>
[QUOTE="ReefBlueCoupe, post: 12074032, member: 5047"] - Pinion seal* - not flange - The part is around $10 from Ford - 8.8's aren't singled out as "known to leak from the flange" - any rear end with a pinion seal can leak. - A new one isn't guaranteed to stop the leak, as nothing in the world can be assured 100%, but in 999 out of 1000 cases, replacing a leaking pinion seal on an otherwise healthy rear end will stop the leak. If he did not replace the pinion bearing and it has some play, that could cause early failure of a new pinion seal. Did he replace the pinion bearings and seal? Did you ask him to? From the sound of it, this was not discussed. If the seal wasn't lubed with a light amount of gear oil before the yoke is reinstalled, the dry seal could be overheated by the dry yoke and could cause early failure of the pinion seal. Solution: He just built the rear end. If the pinion seal is already leaking (you didn't say specifically how long ago it had been), he should replace the seal at his cost. Unless of course you supplied the parts, then you should be responsible for the new seal and replacement labor. This is standard among shops as far as them vs you supplying parts. A pinion seal should last tens of thousands of miles before any leak occurs. [/QUOTE]
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Rear-end question...
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