| The Craftmans Shop > New from Old |
| Hydrovane Compressor Blows A Main Seal |
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| seadog:
Is it definitely a metric size, Andrew? It's very close to 3/4" x 1-1/4" Several thicknesses available here - https://www.bearingsrus.co.uk/sealing-products/oil-seal/imperial-oil-seals?p=3 |
| awemawson:
The shaft is bang on 20 mm |
| seadog:
Oh well, it was worth a try. |
| tom osselton:
Years ago when trying to replace a seal that took a few tries I was told to wrap a oiled piece of paper around the shaft to slide the seal down. |
| awemawson:
Tom, I remembered you mentioning that when I rebuilt that tractor rear wheel trumpet, I looked up the thread, and tried it on this shaft to protect the seal from the keyway. However in practise I found that I could not get the seal over the well oiled paper - (I was using a single wrap of 80 gsm copy paper) So instead I compressed the seal against the shaft opposite to the keyway to give the bit at most risk a better chance. Maybe I should have used cigarette paper, but I think it would be too weak - the seal is very tight on the shaft despite copious lubrication as I installed it. The good news is that I've performed numerous deflate / reinflate cycles and had no more leaks - phew |
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