My OP sender has been leaking since I bought the truck. The leaking was around the threads. I couldn't get even a stubby wrench in there, so I made this tool. So when my wife asks me why I needed to buy a brazing torch, I can just show here this tool. It worked well to get the leak stopped.

 

Nice adaptation of the factory tool! For '51-on, they moved the sender up to the oil filter, which is nice, but if the tube connection at the block leaks on those, a tool like this doesn't work. Have to go thru the trans cover.

 

Nice job on the wrench! I've had to make a few special ones over the years...

 

Reminds me of the old dist. wrenches. I got one somewhere in my shop.

 

I bought a distributor wrench when I first bought the truck. When I looked at the dstributor later, I realized I didn't need it.

Regarding the OP sender, I think I saw a pipe nipple extension in one of the catalogs that makes the sender easier to access (raises it up). Even with this homemade wrench, I still had to remove the oil filter canister tube to get at it. But the best news is I just checked and all my leaks are stopped (oil leak at OP sender, rear end gear oil leak at rear cover, and a minor gear oil leak on the transmittion (not a seal)). The tranny was leaking at a small pin that goes through the case to hold the reverse counter gear and shaft in place. The was no seal originally, but I came up with an interesting solution using Loctite thread locker#243 to seal around the shaft. No more leaks except around the rear of the fan hub. For that one I have ordered new gaskets which should fix it.

I do enjoy working on it.

If you saw my post yesterday about the artist that does caricature graphics of classic cars and trucks, I ordered a large poster from him. He did a great job on mine, even getting the racing wheels right.