Split crankshaft pulley

DANA BIZZELL

DANA BIZZELL

Senior Member
What is split sleeve rubbing are is it the key. Installed new two piece crankshaft pulley. Was careful to line up key with notch in two piece pulley. Once key in place pulled pulley on with ratchet nut, generator/water pump and crank pulley lined up good. Cranked up and loud rubbing sound and sleeve was hot. I did not run engine over thirty seconds. any suggestions.
Thanks
Dana
 
The sleeve rubs against the rope seal. With friction anything warms up . On second thought the noise could be the pulley rubbing on the crossmember.
 
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Could be rubbing on the front motor mount. My suggestion and experience is to remove the two piece pulley and install a one piece. The two piece pulley is a big mistake and will cause you trouble down the road.
 
Now that you mention it, I have had to grind some material off of a front mount yoke that the pulley was rubbing against . Could have been the pulley or the yoke at fault but it worked out. If its rubbing, there will probably be evidence marks. I have mostly had good luck with two piece pulleys . Many times, any repro part can need work to fit properly.
 
I have put it to bed for the night, when I heard rubbing sound killed it and came to house. Look for bite place on pulley tomorrow. Still concerned about temp of sleeve.
Thanks
Dana
 
Found motor noise, pulley spokes rubbing motor mount yoke. ease fix, sanded with tiger disk. Still have concerns about two piece sleeve next to motor being hot to touch, more than normal engine temp. Do I need to pull and oil, was existing seal in engine.
need some smart.
Thanks
Dana
 
I never soak the front seal, but do give it lots of oil and grease after it's in place.
Did you grease or oil the sleeve or seal when it was installed?
 
If you replaced the rope seals in the timing cover and oil pan, it is a very tight fit and there will be friction. The last few rope seals from Brattons that I have used are teflon coated. I use to soak the old rope seals in oil but I don't soak the teflon coated seals but smear a light coat of grease on the shank of the pulley with my finger before installation. Usually when an old crankshaft pulley is removed there will be a fairly deep wear pattern on the shank of the old pulley where the rope seal had worn the pulley. I've never felt the pulleys after installation but figure that they would get pretty warm from friction.
 
DANA BIZZELL said:
Found motor noise, pulley spokes rubbing motor mount yoke. ease fix, sanded with tiger disk. Still have concerns about two piece sleeve next to motor being hot to touch, more than normal engine temp. Do I need to pull and oil, was existing seal in engine.
need some smart.
Thanks
Dana
Click to expand...

You should be able to pull that sleeve after removing the pulley (if it's a 2 piece assembly.)

On removal you'll notice the sleeve has a "taper" where it is inserted into the front of the rope seal - I think this is put their intentionally (assuming yours is built as the originals - which it is best if it is) to allow Ford to put the rope seals in place, mount the oil pan and front engine cover to the motor (around the crank) and then LAST to "push" the sleeve into the two seals - the taper helping to compress the seal and result in some seal compression. This is what "preloads" the seal at this point.

And why most don't usually have problems with the front seal leaking.

Thus you should be able to 'undo' these assembly steps and lubricate somehow the rope seal AND the sleeve before re-assembly - and perhaps get past the heating?

Worth a try.

Joe K
 
I did oil sleeve, temp has gone away guess enough oil got to seal. Had to grind some off yoke. Got it going down hill now.
Thanks
Dana
 
I would suggest if you are replacing crankshaft pulley, two piece are single pull motor mount yoke and grind 1/8" out under were crankshaft hits.
Thanks
Dana
 
I am using the one piece crankshaft pulley made by Bill Stipe. It's machined from a billet, and sports a pulley slightly smaller than original. Suppose to turn the water pump a little slower, makes it easier to install fan belts, and prevents it from hitting anything else.
 
I would be concerned by the fact that the pulley rubs on the yoke,shouldn't be,didn't when it left the factory,engine might be sitting back to far,yoke bent,or maybe hole in front crossmember elongated.It might even be a poorly manufactured pulley.I'm running an aluminum 2 piece,no problems with clearance.
 
I looked at pics of yokes and don't think mine was Ford, Straight across center, it was cast and bolt through cross member had lots of wear. very old.
Thanks
Dana
 
If going to a 2 piece front pulley, is the one that the 2 sections are threaded better than the one that the mating connections are via slots? Don't want to go to a 1 piece for ease of install, etc.
Doing a vendor search, Mac's shows a 2 piece threaded type on their website while other vendors only have the slotted fit.
 
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