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| 7-1/4" pinion seal availability? https://slantsix.org/forum/viewtopic.php?t=23543 |
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| Author: | 64 Convert [ Sat Jun 09, 2007 5:41 pm ] |
| Post subject: | 7-1/4" pinion seal availability? |
I went out to the garage today, and behind my '64 Valiant, I found a trail of differential grease running out the door...I'd guess about a cup full. It appears I have bad pinion seal, and as they say, timing is everything. I've begun moving into a new house about 2-1/2 hours away, and with a leak that bad, I'm hesitant to try driving it that far, since I have no idea how bad it's leaking while driving. I have the parts to convert to an 8-3/4, but no time to do it now. It was to be a winter project. I'd like to get it fixed before I move, but good old Rock Auto doesn't list a seal for a '64 7-1/4. anyone know a quick source for one? I have to be out of this house in 2-weeks, so there isn't much time to go through the search mode. |
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| Author: | dakight [ Sat Jun 09, 2007 6:12 pm ] |
| Post subject: | |
NAPA Part No. 16945 |
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| Author: | 64 Convert [ Sat Jun 09, 2007 6:18 pm ] |
| Post subject: | |
Thank you! |
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| Author: | Doc [ Mon Jun 11, 2007 9:20 am ] |
| Post subject: | |
Most of the original pinion seals used on the 7 1/4 were made of rawhide. (a leather strip) These will "take a set" and start to leak if the car sits with load on the driveshaft / pinion. When you park the car, it is best to put it in nutraul, set the emergancy brake and then put it in park. If you put the car in park first, allow it to roll and "load" the driveline, that action puts some side load on the seal and can cause the leak. Short term, you can top-off the diff and start driving tha car and that may "work" the leather seal back into shape. Long term fix, replace the seal the new rubber lip type piece. DD |
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| Author: | 64 Convert [ Thu Jun 14, 2007 10:45 am ] |
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Interesting info, Doug, the car sits on a slightly sloped garage floor, and always in park without the brake, so that makes sense. |
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| Author: | 72polara [ Fri Jun 15, 2007 11:51 pm ] |
| Post subject: | |
Those old seals in the trans and rear end are curious things. I've had several old ('65 - '73) cars and trucks of various makes that would leak like a seive if I let them sit for 2 - 3 weeks, but didn't drip a drop when I drove them daily. What Doc says does make sense though. When I think about it, I've almost always parked my vehicles on the trans instead of the parking brake, unless I was on a significant grade. |
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| Author: | 64 Convert [ Sat Jun 16, 2007 3:25 pm ] |
| Post subject: | |
Quote: Those old seals in the trans and rear end are curious things. I've had several old ('65 - '73) cars and trucks of various makes that would leak like a seive if I let them sit for 2 - 3 weeks, but didn't drip a drop when I drove them daily.
That's been my experience too. Usually they will just drip a little, and after you drive the car, it stops until it sits for a while again. My Valiant is driven nearly every day, but in this instance had been sitting about a week because of weather and lack of time to drive. What amazed me was the amount of grease that leaked out.
What Doc says does make sense though. When I think about it, I've almost always parked my vehicles on the trans instead of the parking brake, unless I was on a significant grade. |
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