Inside a 30

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gary ca

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My engine inspection covers on my 30 all seeped oil from the bottom of the cover. The gaskets were old and a paper type that had become brittle. I bought new gaskets from Olson's. These were cork/neoprene and .060 thick. They would be easy to make except for the size. I would have to buy a lot of material to make them. The four cost around $48 delivered to my door.

My first attempt to reseal failed and the cover continued to seep long after the tractor had stopped running. The design of this cover leaves about 3/4 of an inch of a ledge for the oil to sit on after the engine stops. This is made up from the edge of the cover, the gasket, and the thickness of the block itself. I simply used gasket cinch to glue the gasket to the cover and then placed the cover in position.

My second attempt was similar except I used silicone on the other side of the gasket where it would meet the block. I also put silicone in position on the bottom edge of the cover to keep oil from sitting there. See first pic.

I am aware of the possibility of the silicone coming off and clogging my suction screen. This screen is a large cup with wire mesh that will easily handle some stray silicone. I am going to keep my eye on it.

Has anyone else experienced this problem and if so, what are the solutions? I have not run the engine after the second attempt. Thanks, G
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Sun, Jul 27, 2014 7:10 AM

Steve A

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I am thinking if Cat expected a perfect seal they would have 4 more bolts in the covers, however its nice to keep the shop floor clean, I power wash mine before I take it to a show and by the time I get back the dirt high lights the oil leaks.

I would say your making a good attempt, use the silicone sparingly

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Sun, Jul 27, 2014 7:19 AM

Old Magnet

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Reply to Steve A:

I am thinking if Cat expected a perfect seal they would have 4 more bolts in the covers, however its nice to keep the shop floor clean, I power wash mine before I take it to a show and by the time I get back the dirt high lights the oil leaks.

I would say your making a good attempt, use the silicone sparingly

Try this stuff for the really tough sealing jobs....
Available through ebay. Get the original product, not the one available through the Permatex line.

http://www.ebay.com/itm/HYLOMAR-UNIVERSAL-BLUE-NON-HARDENING-GASKET-SEALER-80ML-/231289998421?pt=Motors_Car_Truck_Parts_Accessories&hash=item35d9f54c55&vxp=mtr

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Sun, Jul 27, 2014 8:03 AM

sr4440

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Reply to Old Magnet:

Try this stuff for the really tough sealing jobs....
Available through ebay. Get the original product, not the one available through the Permatex line.

http://www.ebay.com/itm/HYLOMAR-UNIVERSAL-BLUE-NON-HARDENING-GASKET-SEALER-80ML-/231289998421?pt=Motors_Car_Truck_Parts_Accessories&hash=item35d9f54c55&vxp=mtr

I put new gaskets from Olson's on mine as well. Seemed to pretty much dry everything up
If you take the covers off again lay a straight edge on them several different directions and see if you have any low spots

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Sun, Jul 27, 2014 6:30 PM

jmvmopar

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Reply to sr4440:

I put new gaskets from Olson's on mine as well. Seemed to pretty much dry everything up
If you take the covers off again lay a straight edge on them several different directions and see if you have any low spots

I suggest using a grey silicone that's used on modern diesels, and even gasoline engines currently. It's more vibration resistant and seals larger gaps. They don't use gaskets for quite a few parts anymore, like oil pans, timing covers, etc. Just grey silicone. This stuff won't break off, and when applied properly it won't leak. I'd use it without a gasket as long as clearance isn't critical.

There are several types like

Permatex Ultra Grey
International Grey Silicone
Motorcraft TA-31
GM Engine Sealant 12378521

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Sun, Jul 27, 2014 11:46 PM

J M Boyajian

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Reply to jmvmopar:

I suggest using a grey silicone that's used on modern diesels, and even gasoline engines currently. It's more vibration resistant and seals larger gaps. They don't use gaskets for quite a few parts anymore, like oil pans, timing covers, etc. Just grey silicone. This stuff won't break off, and when applied properly it won't leak. I'd use it without a gasket as long as clearance isn't critical.

There are several types like

Permatex Ultra Grey
International Grey Silicone
Motorcraft TA-31
GM Engine Sealant 12378521

Hi Gary, We were wondering if you have the right breather on the engine. You may be building up to much pressure in
the crank case. We are in Dinuba- about 30 miles away.

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Mon, Jul 28, 2014 12:45 AM

gary ca

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Reply to J M Boyajian:

Hi Gary, We were wondering if you have the right breather on the engine. You may be building up to much pressure in
the crank case. We are in Dinuba- about 30 miles away.

Hi JMB neighbor,

My breather is just a short pipe with some fibrous material in it. You can just see it on the right. I have cleaned it out and it seems a lot shorter than other 30s I have seen. The oil seems to keep seeping long after the engine is stopped. I do need to check the covers for trueness. We need to connect sometime. G
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