Am putting together elements of my engine now that it's back in the chassis and just discovered that the crank pulley and fan pulley are not aligned on the same plane. Can't figure it out. Just installed an aluminum crank pulley and the fan pulley is stock with a stock bracket. The fan pulley sits outward towards the radiator by about 1/4" or so. Were there two different aluminum fan pulleys? Or a different bracket?
I've got 3 pulley on the bench now and there all difference. Looks like you've got a washer behind it.
That's the felt seal and cap ....
I recently installed an aluminum pulley on my 13 T, and have the same problem. I thought I had installed it backwards, but upon removing it and checking the crankpin hole it is centered, so reversing the pulley would not solve the problem. I will be watching for any answers you get. Lenneylenney
So maybe it's the modern pulley then? Must be .... I thought they were interchangeable. Got mine From Bob's. Maybe I ordered the wrong one.
Looks like your fan shaft is installed incorrectly in relation to the fan or attachment o the block. Check the Ford Manual.
Never had this era T ... is there another way to mount the fan? I did replace the bearings and the shaft. The bracket only goes one way for adjusting.
Mark, your last pboto seemös to show a bent fan arm like the brass cars run or it could just be the light. The correct arm for that fan is straight.The fan and pulley are from a later car. Perhaps the combination is he problemp
Allan from down under.
Put a washer behind the fan arm. I've had to do that before to get the belt to ride in the center.
the fan pulley is sitting too far to the front, it needs to move back.
Yes, it's the fan pulley. It's too far forward. I switched out the aluminum pulley for a stock one and it confirms that. I also removed the fan assembly to inspect the fan bracket and am looking for others in my parts boxes. Not sure about putting a washer behind the fan bracket ... wouldn't that put the fan even more foreword?
These fan arms are substantial ... is it possible that they get bent? Or maybe made by different companies and variable. Isn't there only one straight bracket? I have two Ford stamped examples that have no number and one that is marked T 604. The 1924 parts list has this illustrated as part number 3967B.
Mark - look at page 19 in the parts list, the 09-16 fan bracket is listed as 3967 and the '17-'24 ('25) is listed as 3967B, but at the end of the line the factory number is listed, 604B for your - and that's what is forged into the bracket.
IIt'll probably line up fine with the correct hub and shaft assembly - if not, you may have to adjust the bracket in a sturdy vice (one of the best tools when convincing 90+ year old parts to fit together..)
I recently replaced the fan hub (bearings went bad) and the fan arm on my speedster it's a'26 block but '17-'25 straight fan arm. No idea how it got that way but the arm was bent so that the fan was forward at the top and dramatically forward on the passenger side. Almost a 1/2" out top to bottom and a full inch out side to side. It would have taken some real force to tweak it that bad. A friend had a couple fan arms in his stash so it was easier to swap than to straighten.
I use the modern bearing fan hub and an aluminum crank pulley and they line up nicely as they should. The back side of the crank pulley is abut 5/16 forward of the edge of the pan and timing gear cover.
'26/'27 mount off the water outlet
I like the 26-27 mount. A little harder to adjust but stronger. I just installed one on the speedster and had 3 fan hubs. 1 hub was longer and held more grease.
Nicholas - From the factory '26 & '27 had the mount on the water outlet. However, it's easy to use the earlier arm and a 25 or earlier water outlet. That turned out to be more convenient for me on my speedster where there is a mix of years for parts anyway.
My Dec '25 build early '26 Coupe, which I believe to be correct, has the screw adjustable water outlet fan mount but also has the drilled and threaded boss that would be used to adjust a fan arm. I don't know if that front cam cover casting was changed at some point for the 26/27 to remove the adjustment point. I'm still learning about these things as I wander along.
I have a crazy thought about the aluminum pulley. About a year ago I was tempted to install the aluminum pulley but was told by a T expert that I should check the clearance of the pin toward the back of the pulley. It seems the pin was drilled too far back so if you were to try to crank the car, the ratchet on the end of the crank would not bite the pin and hold it so the crank would not let go. I called one of our suppliers and he said he had never heard of that. So I asked him to do me a favor and look at the pulley and insert a crank ratchet to see if it would hold. He called back a few minutes later and said it would NOT, but no one had mentioned it to them. I said it would not be a problem if you always used a starter. Now the crazy thought---could the suppliers/manufacturers moved the pin hole toward the front to give the ratchet more room? If so wouldn't that move the pulley back toward the block and create the offset problem? Just a thought!! Dick C.
Interesting. When I bought my last new aluminum crank pulley for my '19 speedster I did have to grind a little off the crank ratchet so that it would fully connect with the pin. So that's not the problem here. I reinstalled an old original crank pulley and there was no difference ... so it's on the upper end.
It might be an optical illusion due to the camera angle, but in the pictures it looks like the fan pulley is lower in the front than in the back. If that be the case, your arm might be bent forward and downward. Also that felt seal and cap look like too much space between the arm and the pulley. Did you do any work on the fan pulley since the last time you had a belt on it? Also, what was the reason for replacing the crankshaft pulley? And lastly, did you do work on the engine such as re-pouring the main bearings? How do the camshaft gears align? If the gears are in alignment, your crankshaft is probably in good alignment. However there might be end play in the shaft and it is pushed back.
Now I will tell you my story about my T on which I placed an aluminum pulley on the crankshaft. I got it from either Langs or Chaffins about 4 years ago. The starting crank fits fine, however the belt slips off. It is the same leather belt I had before and I think it might be stretched. If the belt stretches on the rear edge, it will work forward. Anyway the belt kept coming off. I replaced with a rubber belt and so far the rubber belt stays in place.