New rear main
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Senior User
Joined: Jun 2006
Posts: 139
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From: Tonganoxie, Ks.
New rear main
Just put a new rear main in my truck and boy that job blows! The difference between brands of rear main seals is unbelievable. I decided on a carquest seal. The others looked cheap but were very expensive and did not include the gasket for the plate the seal goes into. I wonder why International did not put a stop in the plate the main seal goes into so the seal would stop when beat in? That is on big crank! I will let you all know if this stops the oil leak or not.
Mountain Pass
Joined: Jan 2006
Posts: 162
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From: oregon
Originally Posted by PLC7.3
Did you need a speedy sleeve, ford has a nice kit with installer tool etc.....
Fleet Mechanic
Joined: Sep 2005
Posts: 1,509
Likes: 3
From: Ladner, British Columbia
[QUOTE=ram2miller]I used a plastic cup for the seal lip and I made a tool to drive the seal in.
What PLC7.3 is referring to is that sometimes there is such a groove worn into the seal riding surface on the crank that you need to repair that. Just installing a new seal may not stop the leak.
A speedy sleeve is a thin stainless steel sleeve you put over the crank so the new seal has a clean fresh seal surface to run on.
Speedy sleeves are commonly used on diesel engine rebuilts to repair the seal surface on the crank shafts.
If you want to avoid a speedy sleeve sometimes rebuilders will re-position the new seal to a different depth so it does not ride in the old seal groove. I am not sure if you could do that on the 7.3l crankshaft or if it has enough sealing surface to still allow for crankshaft endplay.
Seb......
Seb......
What PLC7.3 is referring to is that sometimes there is such a groove worn into the seal riding surface on the crank that you need to repair that. Just installing a new seal may not stop the leak.
A speedy sleeve is a thin stainless steel sleeve you put over the crank so the new seal has a clean fresh seal surface to run on.
Speedy sleeves are commonly used on diesel engine rebuilts to repair the seal surface on the crank shafts.
If you want to avoid a speedy sleeve sometimes rebuilders will re-position the new seal to a different depth so it does not ride in the old seal groove. I am not sure if you could do that on the 7.3l crankshaft or if it has enough sealing surface to still allow for crankshaft endplay.
Seb......
Seb......
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Senior User
Joined: Jun 2006
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From: Tonganoxie, Ks.
My crank was in great shape so I did not need one of these speedy sleeves. The plastic cup was used to expand the rubber seal so it did not get any damage when beating in the steel part of the seal.
Fleet Mechanic
Joined: Sep 2005
Posts: 1,509
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From: Ladner, British Columbia
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Senior User
Joined: Jun 2006
Posts: 139
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From: Tonganoxie, Ks.
I was hoping to get away without talking about this but. The injector pump was leaking fuel wich in turn the fuel was routed down the valley pan and then dumped down the back of the block. Now you know the fuel ran down the back of the block over the black who knows how old caked on oil and then turned black itself. Then the fuel was sprayed all over and to an idiot looked like a rear main leaking oil. So I do have a new rear seal and I have all new u-joints and I managed to tighten all the bolts that hold the drivetrain in so its not a total loss although a dissapointment in some ways. I am new to diesels and was not looking for a fuel leak that looked like that one. Thanks for asking though
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Fleet Mechanic
Joined: Sep 2005
Posts: 1,509
Likes: 3
From: Ladner, British Columbia
Sounds good and don't feel bad, it would not be the first time I have done something like that.
That's what makes this a great forum. We all can learn from this.
Thanks again and enjoy your new truck. My first diesel was an 84 F250 and I have been a fan ever since.
Seb.....
That's what makes this a great forum. We all can learn from this.
Thanks again and enjoy your new truck. My first diesel was an 84 F250 and I have been a fan ever since.
Seb.....