Oil pan/ side cover gasket stuff....(FAQ) (3 Viewers)

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Thank you. Maybe @Poser could add that to the second post w/ the pix of the cover and gasket?
 
So I’m replacing my clutch and trying to address everything I can while I’m at it on my 77 40. Got the tranny out, clutch removed and used my bottle jack and a 2x4 to separate the oil pan from the block. I’m stuck trying to remove the last two bolts to the #4 bearing cap to replace the rear main seal and I can’t get those bolts to come free. Even hit them with the pneumatic impact and they won’t budge. Ive owned the truck since 85 have not dropped the tranny before now, but a PO has because the tranny cover is bent where the shifter opening is, so I’m wondering if someone else over torqued these bolts.

Any suggestions for getting these out?
 
If you don't have one of these yet... this thing blows the doors off my snap on air impact
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Replacing the rear main seal

Sorry, I just reread the whole thread. I did not remember having problems putting my rear main in but it was also during a full rebuild and was hanging on an engine hoist.
 
Sorry, I just reread the whole thread. I did not remember having problems putting my rear main in but it was also during a full rebuild and was hanging on an engine hoist.

No worries, I’m seeping oil from the rear main and from the oil cooler so I’m going to replace the o-rings there and replace the gasket to the oil filter bracket. When everything is wet it’s tough to tell where it’s coming from, but the front timing cover is dry

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don't underestimate the valve cover gasket. it looks like a rear main, too, when it drips down the back to the bell house. I'd use a longer bar before hitting those bolts with an Impact gub... HTH
 
FWIW I hit my oil pan with a rubber mallet down near the bottom on each side to break the baked on gasket loose from the block. I think this method is much better than taking a screwdriver or flat edge to the gasket and pan and possibly bending the pan.

Also the FSM says to coat the area with sealer BEFORE installing the 1 and 4 main bearing caps. How important is this ...I didn't see any sealer there when I pulled off the #4 main bearing cap. Why before the main bear cap? Is this just the area where the corner of the pan mates? Not the surface mating area of the bearing cap right?
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it gets sealer at the front and rear mains so the split main cap doesn't leak...
 
FWIW I hit my oil pan with a rubber mallet down near the bottom on each side to break the baked on gasket loose from the block. I think this method is much better than taking a screwdriver or flat edge to the gasket and pan and possibly bending the pan.

Also the FSM says to coat the area with sealer BEFORE installing the 1 and 4 main bearing caps. How important is this ...I didn't see any sealer there when I pulled off the #4 main bearing cap. Why before the main bear cap? Is this just the area where the corner of the pan mates? Not the surface mating area of the bearing cap right?
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There is the ‘pinch’ where the cap meets the block that is important to seal, but yes, you shouldn’t get sealant between the cap and block mating surfaces.

Any you couldn’t really access the front cap without breaching the even-more-difficult seal of the timing cover plate gasket to the front of the block.
 
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...I then use sealer on both sides of the gasket that fit into the grooves of the #1 and #4 main bearing caps, and on the corners.
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Dumb question - When you say you use sealer "on both sides of the gasket that fit into the grooves of the #1 and #4 main bearing cap," you mean that you put sealer on both the pan-to-gasket-side AND on the gasket-to-block-side of the gasket at both the front and rear main bearing caps, correct?

Same question about, "and on the corners." Do you put sealant on both the pan-to-gasket-side and on the gasket-to-block-side of the gasket in the corners of the pan?

Finally, do you have any tips/tricks for installing the front timing plate? Don't over-tighten the oil squirter?
 
Dumb question - When you say you use sealer "on both sides of the gasket that fit into the grooves of the #1 and #4 main bearing cap," you mean that you put sealer on both the pan-to-gasket-side AND on the gasket-to-block-side of the gasket at both the front and rear main bearing caps, correct?

Yes, that would be BOTH SIDES OF THE GASKET.






Same question about, "and on the corners." Do you put sealant on both the pan-to-gasket-side and on the gasket-to-block-side of the gasket in the corners of the pan?

Yes.




Finally, do you have any tips/tricks for installing the front timing plate? Don't over-tighten the oil squirter?


Best tip?

Do not remove it! The thing is staked in place at the factory and does not need to come out.
If you are going to hot tank everything, leave the plate out so that the soft metal does not get ruined.
It is easy enough to clean by its self.


:beer:
 
Yes, that would be BOTH SIDES OF THE GASKET.

Thanks! That’s what I thought. I just wanted to be explicitly clear that you put gasket maker on both the pan-to-gasket side and gasket-to-block side AND on both the #1 bearing side and the #4 bearing side of the gasket. Four “sides” total.





Best tip?

Do not remove it! The thing is staked in place at the factory and does not need to come out.
If you are going to hot tank everything, leave the plate out so that the soft metal does not get ruined.
It is easy enough to clean by its self.


:beer:

Too late. The PO already removed it and overtightened it during the previous rebuild. You can see where it marked the front of the block. It was also leaking at the front timing cover/front plate.
 
I am getting ready to install my oil pan gasket and was wondering what the harm would be to put a bead of sealant around the entire gasket (both sides) instead of just the ends?
 
My thinking is:

A) it is not necessary on the straight part in order to get a good seal. No benefit to doing this...so, why?
B) just another unneeded obstacle to deal with the next time you remove the oil pan.

Don‘t suppose it can do any harm, but if it‘s not necessary, why do it.
 
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