Hi Guys:
You all have been so helpfull whenever I have a problem, and I'm hoping you can help again.
I have a '48 F-1 with a flathead 6. Driving down the road the truck seemed like someone turned off the key, and I coasted over to the side. It would not restart, and after much diagnosis time with my students,I finally figured it out to be the timing gear. The fiber outer section had seperated from the alumnium center. I ordered a new fiber gear from my local parts supplier, but it is different. The old gear bolted to the front of the cam in a adapter (?) and the adapter has a keyway I guess that the adapter is pressed on, and the new gear has a small hub with a keyway that looks like it should fit on the cam in lieu of the adapter. Is this correct? Did they change the style of the gear ? If not where do I get the OEM style gear? I've tried most of the on-line suppiler catalogs, but can not even find a fiber timing gear. And while we are at it, what is the cubic inch size of this engine, 223 or 226?
I'd like to get this thing back together before school lets out for the summer, and the students working on it would too!
Thanks

 

The parts manuals show two different types of 226-6 cylinder cam gear setups; one is called "press on", the other is "bolt on". No explanation, both types were apparently used from 48 - 53. See below.

Is the new gear aligned correctly with the crank gear when installed? Does it require a bunch of force to put it on? I'd assume your old one is on the left, the new on the right? If the end of the cam has a threaded hole, my GUESS (and only that!!) is that you can draw on the new gear onto your old cam with a center bolt. I don't know how you'd hold the cam from turning unless you can get the new gear on part-way so the crank holds it from turning.

MAJOR CAVEAT -- I'm just talking here, no experience with these!

 

Can anyone else help me out here? can I yse the press on gear on this engine that had the bolt on style? Or does anyone know where to get the bolt on style gear?
Thanks

 

If all else fails check the shop manual:







As for pressing on the gear, the manual has a specific tool listed but who's going to have that? I would think you could rig something similar using a larger socket.

Ross, the extra handle at the bottom of Fig. 40 answers your question of how to hold the gear while tightening.

 

I can't offer any advice to help you but I can sympathize...I had the exact same thing happen to me 3 hours into a 4 hour drive back to college years after summer break years ago. Went to an aluminum gear after that.

 

If you haven't solved your problem here PM me I might have the Gear you need.