The Ford Barn

Scottyboy · 10-18-2014, 06:32 AM

I am re-assembling my 52 8ba flathead. The crankshaft, gear, and oil slinger are original from the teardown. I purchased a new one piece front oil seal and smooth spacer. My question is. After putting the gear back on the crankshaft the key way does not stick out past the gear to engage the oil slinger. Is this ok and normal? It will spin freely. Also the new spacer slips on the snout of the crankshaft and spins freely. Is this OK? The machine shop removed these parts at machining so I am not sure how the originals fit prior to tear down.

Walt Dupont--Me. · 10-18-2014, 06:49 AM

The key does not stick out past the gear on the 8BA engine, the slinger will not spin after the seal race is installed and the pulley and bolt is tightened up. Walt

Scottyboy · 10-18-2014, 07:06 AM

Will their be a leakage problem under the spacer since there is a slight tolerance to the crank snout? From what I have been reading it usually has to be heated or driven on.

Walt Dupont--Me. · 10-18-2014, 07:45 AM

Quote:

Originally Posted by Scottyboy

Will their be a leakage problem under the spacer since there is a slight tolerance to the crank snout? From what I have been reading it usually has to be heated or driven on.

That seal race should be tight, like a tap on fit. If yours is loose it probably one of those made in Cokamunger. Walt

Scottyboy · 10-18-2014, 08:39 AM

LOL. I got it from Macs. Any fix for it or do I need to find a new one.

Thanks

Ol' Ron · 10-18-2014, 04:06 PM

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Can't help you with the seal, but the gear only goes on one way. Make sutr thr timinh mark is out??

cmbrucew · 10-18-2014, 04:21 PM

Center the seal sleeve and use loc tite.
Bruce

BillM · 10-18-2014, 09:33 PM

Is the seal sleeve a replacement for the no. 6359 spiral grooved spacer in this drawing? http://www.vanpeltsales.com/FH_web/F...y_1949to53.jpg
I think that spacer is a slip fit on the shaft; the very thin Speedi Sleeves that are meant to provide a new surface to worn/grooved shafts are the ones that are driven on to the shaft.

rotorwrench · 10-19-2014, 10:44 AM

If it has slop or wobble, I'd look for another source for a sleeve. If is close to a -0- fit then loctite #35 or 680 or 609 push fit will hold it OK. It would have to be no more than .005" loose fit though according to Henkle/Loctite for 609. The 680 may work with more than .005" loose fit. The fit up of the crank pulley will hold it after that.

Scottyboy · 10-20-2014, 12:51 PM

It is the smooth spacer that was recommended to replace the spiral one when you use the rubber seal to replace the rope seal. Can't even find the spiral one that came off the crank. I wonder if the machine shop wasted it getting it off? No wobble in it but it will slip on by hand and spin fairly easy. I'll give the locktite a try to hold it into place and keep it from spinning. Hopefully the rubber seal will do it's job after that.

BillM · 10-20-2014, 10:20 PM

I believe that when you tighten the bolt it clamps the pulley and everything behind it tight and the sleeve is not going to rotate; thus there would be no need to use Loctite. But it won't hurt. Except to make it harder to get apart later.

JWL · 10-21-2014, 05:39 AM

If the sleeve dimension provides an adequate centering on the crankshaft it will perform OK. What is not needed is an off-center sleeve with runout.

10-18-2014, 06:32 AM	#1
Scottyboy Member Join Date: Apr 2014 Location: Salt Lake City, Utah Posts: 37	8BA crankshaft front gear mystery I am re-assembling my 52 8ba flathead. The crankshaft, gear, and oil slinger are original from the teardown. I purchased a new one piece front oil seal and smooth spacer. My question is. After putting the gear back on the crankshaft the key way does not stick out past the gear to engage the oil slinger. Is this ok and normal? It will spin freely. Also the new spacer slips on the snout of the crankshaft and spins freely. Is this OK? The machine shop removed these parts at machining so I am not sure how the originals fit prior to tear down. Last edited by Scottyboy; 10-18-2014 at 06:41 AM.

10-18-2014, 06:49 AM	#2
Walt Dupont--Me. Senior Member Join Date: May 2010 Location: Gardiner Me. Posts: 4,200	Re: 8BA crankshaft front gear mystery The key does not stick out past the gear on the 8BA engine, the slinger will not spin after the seal race is installed and the pulley and bolt is tightened up. Walt

10-18-2014, 08:39 AM	#5
Scottyboy Member Join Date: Apr 2014 Location: Salt Lake City, Utah Posts: 37	Re: 8BA crankshaft front gear mystery LOL. I got it from Macs. Any fix for it or do I need to find a new one. Thanks __________________ "This thing better run when I get done!"

10-18-2014, 04:06 PM	#6
Ol' Ron Senior Member Join Date: May 2010 Location: Chester Vt Posts: 8,879	Re: 8BA crankshaft front gear mystery Sponsored Links (Register now to hide all advertisements) Can't help you with the seal, but the gear only goes on one way. Make sutr thr timinh mark is out??

10-18-2014, 04:21 PM	#7
cmbrucew Senior Member Join Date: Dec 2010 Location: North of sandy ago, CA. Posts: 2,064	Re: 8BA crankshaft front gear mystery Center the seal sleeve and use loc tite. Bruce __________________ Works good Lasts long time

10-18-2014, 07:06 AM	#3
Scottyboy Member Join Date: Apr 2014 Location: Salt Lake City, Utah Posts: 37	Re: 8BA crankshaft front gear mystery Will their be a leakage problem under the spacer since there is a slight tolerance to the crank snout? From what I have been reading it usually has to be heated or driven on.

10-18-2014, 09:33 PM	#8
BillM Senior Member Join Date: May 2010 Location: Everett, WA Posts: 504	Re: 8BA crankshaft front gear mystery Is the seal sleeve a replacement for the no. 6359 spiral grooved spacer in this drawing? http://www.vanpeltsales.com/FH_web/F...y_1949to53.jpg I think that spacer is a slip fit on the shaft; the very thin Speedi Sleeves that are meant to provide a new surface to worn/grooved shafts are the ones that are driven on to the shaft. __________________ My web page: http://myplace.frontier.com/~wgmumaw/

10-19-2014, 10:44 AM	#9
rotorwrench Senior Member Join Date: Jun 2010 Location: San Antonio, Texas Posts: 16,462	Re: 8BA crankshaft front gear mystery If it has slop or wobble, I'd look for another source for a sleeve. If is close to a -0- fit then loctite #35 or 680 or 609 push fit will hold it OK. It would have to be no more than .005" loose fit though according to Henkle/Loctite for 609. The 680 may work with more than .005" loose fit. The fit up of the crank pulley will hold it after that. Last edited by rotorwrench; 10-19-2014 at 10:51 AM.

10-20-2014, 12:51 PM	#10
Scottyboy Member Join Date: Apr 2014 Location: Salt Lake City, Utah Posts: 37	Re: 8BA crankshaft front gear mystery It is the smooth spacer that was recommended to replace the spiral one when you use the rubber seal to replace the rope seal. Can't even find the spiral one that came off the crank. I wonder if the machine shop wasted it getting it off? No wobble in it but it will slip on by hand and spin fairly easy. I'll give the locktite a try to hold it into place and keep it from spinning. Hopefully the rubber seal will do it's job after that. __________________ "This thing better run when I get done!"

10-20-2014, 10:20 PM	#11
BillM Senior Member Join Date: May 2010 Location: Everett, WA Posts: 504	Re: 8BA crankshaft front gear mystery I believe that when you tighten the bolt it clamps the pulley and everything behind it tight and the sleeve is not going to rotate; thus there would be no need to use Loctite. But it won't hurt. Except to make it harder to get apart later. __________________ My web page: http://myplace.frontier.com/~wgmumaw/ Last edited by BillM; 10-20-2014 at 10:25 PM. Reason: Added later.

10-21-2014, 05:39 AM	#12
JWL Member Emeritus Join Date: May 2010 Location: Fitzgerald, Georgia Posts: 2,204	Re: 8BA crankshaft front gear mystery If the sleeve dimension provides an adequate centering on the crankshaft it will perform OK. What is not needed is an off-center sleeve with runout.