Cam shaft seal

Discuss all things Model T related.
Forum rules
If you need help logging in, or have question about how something works, use the Support forum located here Support Forum
Complete set of Forum Rules Forum Rules

Topic author
kerry
Posts: 206
Joined: Mon Jan 07, 2019 2:42 pm
First Name: Frank
Last Name: van Ekeren
Location: Rosedale Vic Australia

Cam shaft seal

Post by kerry » Mon Jul 29, 2019 12:54 am

For years I fitted the seals supplied by the vendors and we all know that the have too smaller OD and need to be glued/sealed in place.
So the million dollar question is, why have we been putting up with them when I simply walked into our local bearing store and bought the right size to fit in??


GG Gregory
Posts: 39
Joined: Sat Jul 20, 2019 3:05 pm
First Name: GG
Last Name: Gregory
Location: Maryville Tn

Re: Cam shaft seal

Post by GG Gregory » Mon Jul 29, 2019 3:32 am

That's easy...most of us don't have a "local bearing store". And if we did the kids running the place wouldn't know how to locate the part.


BobShirleyAtlantaTx
Posts: 55
Joined: Mon Jan 07, 2019 12:44 am
First Name: Bob
Last Name: Shirley
Location: Atlanta Tx

Re: Cam shaft seal

Post by BobShirleyAtlantaTx » Mon Jul 29, 2019 4:32 am

So, what is the number of the seal with the proper OD?


Topic author
kerry
Posts: 206
Joined: Mon Jan 07, 2019 2:42 pm
First Name: Frank
Last Name: van Ekeren
Location: Rosedale Vic Australia

Re: Cam shaft seal

Post by kerry » Mon Jul 29, 2019 6:46 am

003.JPG


Allan
Posts: 746
Joined: Sun Jan 06, 2019 7:21 pm
First Name: Allan
Last Name: Bennett
Location: Gawler, Australia

Re: Cam shaft seal

Post by Allan » Mon Jul 29, 2019 8:54 am

Frank, that's the standard size, 1.0" internal 1.5" external, 1/4" wide. I have bought the same size from CBC. Sometimes they fit, sometimes they don"t. My guess is the timing covers vary. After all, a lump of felt will fit any size hole.

Allan from down under.


Adam
Posts: 395
Joined: Sun Jan 06, 2019 11:57 am
First Name: Adam
Last Name: Doleshal
Location: Wisconsin
MTFCA Number: 23809
MTFCI Number: 1
Board Member Since: 2000

Re: Cam shaft seal

Post by Adam » Mon Jul 29, 2019 11:34 am

Kerry, Have you tried your new seal in your timing cover yet? Was it a good “press fit”? If it was, then that seal is oversize, or the hole in your cover is undersize...


Topic author
kerry
Posts: 206
Joined: Mon Jan 07, 2019 2:42 pm
First Name: Frank
Last Name: van Ekeren
Location: Rosedale Vic Australia

Re: Cam shaft seal

Post by kerry » Mon Jul 29, 2019 5:05 pm

Yep, a good tight fit, tried another in several covers on the shelf 1916 and up, same thing, I've never had one from the vendors be any more than a fall out fit and need to be glued in and I've fitted many on every rebuild over the years.


Chad_Marcheese
Posts: 77
Joined: Tue Jan 15, 2019 6:06 am
First Name: Chad
Last Name: Marcheese
Location: Upstate, NY
Board Member Since: 2005

Re: Cam shaft seal

Post by Chad_Marcheese » Mon Jul 29, 2019 8:00 pm

Its interesting that I can't seem to find that seal number within the US easily, and that it doesn't seem to cross directly to CR9878 or SKF 471224.....even though they all "appear" to be the same size.

I agree with the pain in the A deal of having to make the other seal work, but at least for me, mine has been trouble free so far from the install. I think I remember bending outward the metal on the seal some to take up space, before siliconing it into place.

Edit: Digging around a little (because this topic has come up time to time) I just saw another post from April, where it was suggested that a SKF 9853 seal be used for the camshaft. And upon checking on it shows that it indeed has a slightly bigger outer diameter of 1.514 that fits a bore of 1.51. Maybe that is all the difference needed? I don't have any covers near me currently to check.

User avatar

TonyB
Posts: 283
Joined: Fri Jan 04, 2019 11:15 am
First Name: Tony
Last Name: Bowker
Location: Ramona, CA
MTFCA Number: 32
MTFCA Life Member: YES
Board Member Since: 2005

Re: Cam shaft seal

Post by TonyB » Tue Jul 30, 2019 10:45 pm

I remember that when Milt Webb first proposed using a neoprene seal on the camshaft, he mentioned that it needed a little squeeze between two bits of wood in the vice to swell the outer circumference. I usually do that and add a little black silicone seal. It may not be perfect but it’s worked for me for close to forty years.
Tony Bowker
Ramona, California
1909 Touring, 1914 Touring, 1915 Speedster, 1924 Coupe.

Post Reply Previous topicNext topic