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t140 Oil sump gasket thickness
#622660 10/22/15 12:26 am
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Hi all;
I'm slowly putting together a 1982 T140ES. I've never had it running (I started recently - what a thrill!) so I don't know if the sump plate leaked before...

When I changed the oil, replaced the old sump plate gasket with a homemade one.

I dug around my spare parts and found a gasket sheet. It bothered me that it was 1.5mm material, much thicker that the old gasket, but I reasoned that the thicker, the better. Right??

I also didn't put any gasket goo on the gasket when I put it together.

Well, of course, the sump plate leaks...

So, I've washed all the oil off of everything, got my gasket goo (blue stuff) ready to apply, but before I go through that mess again I figured I better ask about "thick" gaskets.

Is it possible that the gasket thickness (1.5mm) is contributing to my problem?

Thanks, Norm

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Re: t140 Oil sump gasket thickness
Norm Mareeba #622679 10/22/15 5:23 am
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You keep saying "gasket" but unless you have removed the original strainer filter (fitted a Charlies filter?) then there should be two sump plate gaskets [6], one on each side of the filter [4].


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Last edited by L.A.B.; 10/22/15 3:35 pm.
Re: t140 Oil sump gasket thickness
Norm Mareeba #622712 10/22/15 3:33 pm
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Use good quality gaskets. No sealer-goo!

Re: t140 Oil sump gasket thickness
L.A.B. #622724 10/22/15 4:47 pm
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Yes, one gasket was in good condition, the other broke up when I took it apart, hence the reason for making one.

Re: t140 Oil sump gasket thickness
Norm Mareeba #622731 10/22/15 5:40 pm
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Originally Posted by Norm Mareeba
Yes, one gasket was in good condition, the other broke up when I took it apart, hence the reason for making one.


Then I don't know if the slightly thicker gasket material caused a problem or not-but some leakage at that joint (as it is really two joints not one) is not uncommon and re-using an old gasket is something of a false economy in my opinion. Don't be tempted to over-tighten the nuts in an effort to stop the leak as that can pull the studs out of the frame.

Re: t140 Oil sump gasket thickness
Norm Mareeba #622776 10/23/15 6:50 am
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The sump plate may not be flat, either. Next time you have it off, flatten it with fine sandpaper on a (table saw? etc.)

Re: t140 Oil sump gasket thickness
Norm Mareeba #622792 10/23/15 9:59 am
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TBH I'd fit a charlie's flter.

Motado ( or something like that) make a CXNC'd one that gets good write ups.
I have run a genuine Charlie's since 84 or so.
the modern ones that use a similar cast base have the spigot cast in, whereas the originals have a steel spigot.

They run a B25/50 filter and is far better than the teastrainer

Re: t140 Oil sump gasket thickness
Norm Mareeba #622801 10/23/15 11:14 am
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+1 with Anglobike.

Re: t140 Oil sump gasket thickness
Norm Mareeba #622828 10/23/15 2:25 pm
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I'd say the thicker material has compressed and the oil is likely to be leaking out of the areas in the middle between the screws. Your challenges will be to get the plate back flat and getting the area totally oil free to seal properly.


Moderated by  John Healy 

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