thedawnpatrol Posted April 9, 2015 Share Posted April 9, 2015 Hi I'm just putting my MCC 6 cylinder engine back together, the timing cover has a felt bearing seal where the crank pulley passes through, I'd rather replace this with a modern rubber seal, can anyone tell me what size this needs to be or better still a modern part number for one of these seals please. Cheers Jules Quote Link to comment Share on other sites More sharing options...
goanna Posted April 10, 2015 Share Posted April 10, 2015 HiI'm just putting my MCC 6 cylinder engine back together, the timing cover has a felt bearing seal where the crank pulley passes through, I'd rather replace this with a modern rubber seal, can anyone tell me what size this needs to be or better still a modern part number for one of these seals please. Cheers Jules Get hold of some measuring tools , a dial caliper or vernier caliper will do the job. Measure the diameter of the pulley shaft and the outside diameter of the felt housing . Your local bearing supplier may have a modern neoprene seal that will fit . I have about six CS8 and PU engines and vehicles here but I am yet to do anything with them ! I must be lazy or getting old . My Morris Commercials will have a uncertain future here as nobody is interested in them . Most of the MV collectors over here don't even know that Morris Commercial made military vehicles ! One MV owner asked me " Why do you like that stuff " Cheers Mike Quote Link to comment Share on other sites More sharing options...
Ivor Ramsden Posted April 10, 2015 Share Posted April 10, 2015 Jules, I don't think you'll need any very elaborate tools. All the M-C seals that I've come across are very straightforward imperial sizes. The shaft diameter and housing diameter are easy enough to measure so the only dimension you'll have trouble with is the depth, but you should be able to estimate that. If you can't get imperial seals locally they are available on the net. Mike, to give your M-C fleet a future, simply stuff them all in a container or two and put some postage stamps on it along with my address ... Quote Link to comment Share on other sites More sharing options...
Sean N Posted April 10, 2015 Share Posted April 10, 2015 If you're stuck for measuring equipment just take the pulley and the seal into your local bearing and power transmission suppliers and they should be able to sort it out for you. Quote Link to comment Share on other sites More sharing options...
thedawnpatrol Posted April 10, 2015 Author Share Posted April 10, 2015 Thanks chaps, I went into my local bearing shop today, though they could source a fit, both chaps there were surprised I was not happy with a felt seal as per original...... They said, cut it tight, use plenty of granite grease and jobs a good one........ What do you recon ? Cheers Jules Quote Link to comment Share on other sites More sharing options...
Sean N Posted April 10, 2015 Share Posted April 10, 2015 I suspect they may have said graphite grease! Is this felt seal already mounted in a metal case like a normal seal, or is it just a length of felt that you fit into a recess? If you can match a modern lip seal I think you'll probably find it easier to fit and longer lasting. Quote Link to comment Share on other sites More sharing options...
goanna Posted April 11, 2015 Share Posted April 11, 2015 I suspect they may have said graphite grease! Is this felt seal already mounted in a metal case like a normal seal, or is it just a length of felt that you fit into a recess? If you can match a modern lip seal I think you'll probably find it easier to fit and longer lasting. I agree . A modern seal will be 100% more effective than the felt would ever be . Felt is a natural substance made from rabbit fur . 80 years ago felt was widely used but these days less so . Mike Quote Link to comment Share on other sites More sharing options...
thedawnpatrol Posted April 11, 2015 Author Share Posted April 11, 2015 Ok chaps, Point taken, I will push on with trying to find a modern seal. I will let you know how I get on. Cheers Jules Quote Link to comment Share on other sites More sharing options...
Zuffen Posted April 11, 2015 Share Posted April 11, 2015 I wonder if a neoprene seal will still be doing its job in 80 years? The felt seal has lasted a lot longer than a modern seal would, but not seal as well. Me, I'd fit the modern seal as well, but be careful about knocking the felt seal's longevity. Quote Link to comment Share on other sites More sharing options...
Ivor Ramsden Posted April 12, 2015 Share Posted April 12, 2015 Here's the info that I think you need. I've only got a parts book for the CDSW but I guess they and the CS8 both have the same seal, part number LA.7101. The seal's details, taken from an ancient Payen catalogue: Inside diam 1 21/32" Outside diam 2 13/32" Depth 5/16" Payen number 5633 Going by those dimensions I'm afraid you'll probably have to stick with felt. It's one of the few M-C seals that are an obscure size. To be honest, felt provides a decent enough seal if it's installed tightly enough. The seal is simply a ring of felt, square in section. If you can get hold of some thick, dense felt it wouldn't be impossible to make one. Quote Link to comment Share on other sites More sharing options...
goanna Posted April 12, 2015 Share Posted April 12, 2015 I wonder if a neoprene seal will still be doing its job in 80 years? The felt seal has lasted a lot longer than a modern seal would, but not seal as well. Me, I'd fit the modern seal as well, but be careful about knocking the felt seal's longevity. But we don't know if the original felt seal is actually sealing . Has it lasted 80 years of life and done it's job effectively for all of that time , I doubt it . Quote Link to comment Share on other sites More sharing options...
Recommended Posts
Join the conversation
You can post now and register later. If you have an account, sign in now to post with your account.