As I was driving back from a very smooth 25 mile run to town and ice cream I had a mishap. On a flat about 2 miles from home I opened the throttle up all the way, when I quickly pushed it all the way open pushed too hard. Snap! Pull over. The throttle shaft that runs down the steering column is snapped in half! Must have had an old fracture in there for some time to snap so easily. It's above where the pin for the control arm is, and about 6 inches below where it disappears into the column/firewall. How do I fix this?
Matthew, you could simply braze the rod back together.
possibly, I wouldn't trust myself to do it so would want a skilled smith to do it. I'm guessign replacign the rod is a real pain?
An appropriate shaft coupler might work well, if you can pull apart the pieces to slip one on. With set screws on each end, makes for a good fix.
https://www.zoro.com/dayton-coupling-rigid-steel-6l015/i/G1612116/?gclid=CjwKEAj w1PPJBRDq9dGHivbXmhcSJAATZd_BO47C3XRvM3qx9-foed1nQN4AkhniKYe6bBdblR5CeRoCopzw_wc B
Matt, I would clean the broken shaft so clean you could eat off of it, drill a bushing out of 3/8" cold rolled steel rod (about 1 1/2" long and silver solder it over the break. Remember the flux! Should be strong as new. Silver solder requires less heat and is easier to handle than brass.
Matthew, brazing is fairly easy. Heat the rod with the torch until it barely turns red then melt on the brass. I've brazed them together before and it works well. Replacing the rod requires the complete disasembly of the steering column which can be a real pain.
I think Dave has the best idea for an on-the-column repair. The sleeve will keep everything in alignment too. The lower temperature lessens the chance of overheating something nearby.
An easy fix would be to use two wire-cable clamps (like tiny exhaust U-bolt clamps) and a short length of split or cut tubing round the shaft.
Matthew, If you are not going to weld it together using whatever means yourself, then let the smith decide what is best after they examine it.
Thanks guys. I'm going to call up my local mechanic this morning. His welding guy Nate is actually my neighbor. I'll have him take a look at it and see if he can fix it.
The parts vendors have new or used rods. it isn't hard to replace. Take off the steering wheel, take out the pin where the throttle lever is attached and take out the pin where the spring is holding it at the bottom of the column. With an open car, you can pull the rod right out and push in the replacement. Then install the pins. New ones would be best. And re-install the steering wheel. Not sure whether you have enough room inside a closed car to do this. You might need to lower the steering column or remove it.
My mechanic made quick work of it this morning with a welder. Good to go again! Looks like something was binding up and caused the break.
Uh, Norman, how do you get the rod past the steering gear case??
??? a rod really has no twist for the carb or timer How?? guess the night gremlims with vise grips
The bottom end of the rod could have been rusted in the lower bracket, so when you move the lever, you twist the rod, which will eventually break.
Two rivets to remove. And then replace after ward.
Also remove pitman arm to get the shaft to move out.
Our rods are rusted exactly where you are talking about; haven't restored the column yet.
Congrats to you Matthew.
Put some penetrating oil on them, and you can lightly tap the ends (not directly with the hammer or you'll swedge the ends, put something between, punch or a flat piece of metal) to loosen them up. The rod actually rotates and moves a bit up and down in that bracket (that's how the levers "click" from groove to groove on the column end), so it's important for it to not bind there.
I'm going out and putting a drop of oil on Betsy's rods right now!