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Suffolk Punch Engine info

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The Big m'O'wer Sun, 18/06/2017

I have just changed the oil and sump gasket on my Suffolk Punch engine, Type 98G14. Model No. 3A. The sump is held to the engine body by 2 hexagon head set screws. At the sump plug end, the set screw holds down a round cap, about 1 1/4" in diameter. Can anyone tell me what the round cap is for? And what type of seal should be sealing it?

Thank you!!

Forums

hortimech Sun, 18/06/2017

To be honest, I haven't any certain idea why it is there, but I suppose it is there to spread the load from the bolt. There should just be a round piece of thick gasket material under the plate.