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727 Housing Extension: Leaking Output Seal
#1306279
09/18/12 07:59 AM
09/18/12 07:59 AM
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Joined: Jan 2003
Posts: 5,443 Indiana
YO7_A66
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Posts: 5,443
Indiana
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I have the seal and once I get the front band adjusted (as explained in another thread), I am going to replace the output shaft seal that is in the housing extension. Replacing it I can do, but I am trying to determine why this seal needs replaced. This is the third time that I have replaced this seal in 10-12 years. I don't drive the car allot each year and it just seems that I am replacing this seal way to often. The first seal was the standard length seal and I also replaced the bushing. The second one is the one with the rubber boot. The one that I currently have is the standard seal again. The fluid is leaking out of the output shaft and going down the drive shaft and leaking down the differential assembly. I have splatter tranny fluid under my car from flinging off of the drive shaft. Besides replacing the seal again, what else am I missing? Too much fluid? Input shaft OD damaged (it is nice and smooth but I will check it again), to much pressure in the tranny? I don't know, I am just throwing out weird ideas. Thanks again.
1970 YO7 A66 [Canadian Export] F8 Challenger 340 (Currently in shop for stroker assy.)
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Re: 727 Housing Extension: Leaking Output Seal
[Re: JohnRR]
#1306281
09/18/12 10:02 AM
09/18/12 10:02 AM
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Joined: Jan 2003
Posts: 5,443 Indiana
YO7_A66
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John, I will call and get the boot/seal on order. This is the one that is currently installed.
""Also make sure the plug at the back of the yoke is not leaking ."" I am not familiar with this plug. Where is it located?
Do you mean a plug on the yoke that is attached to the drive shaft? Thanks
1970 YO7 A66 [Canadian Export] F8 Challenger 340 (Currently in shop for stroker assy.)
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Re: 727 Housing Extension: Leaking Output Seal
[Re: buildanother]
#1306283
09/18/12 10:13 AM
09/18/12 10:13 AM
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Joined: Jan 2003
Posts: 5,443 Indiana
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I never noticed one in there. Does anyone have a picture? I will be able to pull the drive shaft in the next couple of days. This will give me some "heads-up" as to what to look for. I will hold off on the new seal until I can review the yoke.
Thanks guys!!
1970 YO7 A66 [Canadian Export] F8 Challenger 340 (Currently in shop for stroker assy.)
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Re: 727 Housing Extension: Leaking Output Seal
[Re: YO7_A66]
#1306284
09/18/12 11:11 AM
09/18/12 11:11 AM
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Joined: Jan 2003
Posts: 75,008 U.S.S.A.
JohnRR
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Quote:
John, I will call and get the boot/seal on order. This is the one that is currently installed.
""Also make sure the plug at the back of the yoke is not leaking ."" I am not familiar with this plug. Where is it located?
Do you mean a plug on the yoke that is attached to the drive shaft? Thanks
The seal in this picture you attached is the booted seal, the boot is a tad shorter than the factory boot from in the day but it still does its job.
As said the plug is on the rear of the yoke
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Re: 727 Housing Extension: Leaking Output Seal
[Re: JohnRR]
#1306285
09/18/12 11:21 AM
09/18/12 11:21 AM
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When I get the yoke/drive shaft removed, I will see if the plug is leaking. If so, then I will JB Weld it. I was not even aware of this plug and that it could cause a leak. I will check it out.
Thanks allot!!
1970 YO7 A66 [Canadian Export] F8 Challenger 340 (Currently in shop for stroker assy.)
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Re: 727 Housing Extension: Leaking Output Seal
[Re: John_Kunkel]
#1306287
09/18/12 08:44 PM
09/18/12 08:44 PM
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Posts: 5,443 Indiana
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Great picture John. I plan on pulling the drive shaft tomorrow night. Thanks allot.
1970 YO7 A66 [Canadian Export] F8 Challenger 340 (Currently in shop for stroker assy.)
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