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Old 07-19-2019, 11:32 PM   #1
texastruck

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Gap in new main seal

I just replaced my rear main seal. It wasn’t leaking, but I figured since the engine was out of the truck, might as well replace it.

The install was simple enough, but once I finished up and inspected the new seal, I noticed there was a small gap in between the crank and seal on the right side. Isn’t it supposed to be tight against the crank all the way around? Did I get a defective seal??

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Old 07-20-2019, 02:33 AM   #2
texastruck

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Click the image to open in full size.Rear main seal by , on Flickr


picture didn't show up in my last post
 
Old 07-20-2019, 09:14 AM   #3
BigPapa
 
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Quote:
Originally Posted by texastruck View Post
I just replaced my rear main seal. It wasn’t leaking, but I figured since the engine was out of the truck, might as well replace it.
Why???

If it ain’t broke, don’t fix it.....
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Last edited by BigPapa; 07-20-2019 at 09:15 AM.
 
Old 07-20-2019, 10:43 AM   #4
Rich dzl
 
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I have seen that a lot and never had one to leak ..
 
Old 07-20-2019, 11:30 AM   #5
Downtownbrown
 
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Ive seen them have a gap like that a lot when you pull out the plastic sleeve and it stretches them, usually they go back down. Never had one leak that looked like that.


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Old 07-20-2019, 01:20 PM   #6
TheHammer
 
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Once the engine temp gets up, it should tighten up. I’ve had front and rear seals do this occasionally.
 
Old 07-20-2019, 09:44 PM   #7
texastruck

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Awesome, thank you everyone
 
Old 07-20-2019, 10:20 PM   #8
fatty
 
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Quote:
Originally Posted by BigPapa View Post
Why???

If it ain’t broke, don’t fix it.....
I had my trans out and didnt replace the rear main seal because it didnt leak. I must have rattled it around too much because it started leaking immediately after.
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Old 07-22-2019, 09:04 PM   #9
diesel_importer
 
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Yea, I bet it will go back. Also, that's more like the dust cover. The teflon seal is on the other side and you can't see it when installed.
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