MTFCA Forum

Just had to rebuild my transmission due to a cracked drum.
Got it back in car and was having a time getting pedals adjusted. Found my problem I think. Pedal has gotten loose on the shaft. The pedal is from an older rebuild before I got the car. Now I have to fix it. I don’t want to pull engine again.
Anyone fixed this problem with out pulling engine?
Thanks Dan.

Which pedal?? low & reverse are removable.
Low pedal: cam or pedal side? Cam side HH off.
Worst case the HH has to come off. Not necessary to pull the motor.
Low pedal - possibly re-peen the pin or weld the pedal to the shaft in place.

Low pedal. Pedal is loose on shaft. It is a replacement shaft, can tell from the hammered pin holding it on. Fixing to remove starter so I can get to it. Starter has to come out anyway.
Thinking about removing pin and see about using a special fitted shoulder bolt. Thoughts ?????

The pin must fit tight in the pedal & shaft. Ideally a press fit. Any slop will work & compound over time.
I would drill out as needed for a tight true hole & buy a piece of drill rod to match,keeping the hole as small as possible, even if its a letter size. Hammer in & buck to tighten as a rivet. Add a drop of green locktight for a belt & suspenders extra hold.

Dan Hatch wrote: ↑

Sun Oct 13, 2024 1:37 pm

Low pedal. Pedal is loose on shaft. It is a replacement shaft, can tell from the hammered pin holding it on. Fixing to remove starter so I can get to it. Starter has to come out anyway.
Thinking about removing pin and see about using a special fitted shoulder bolt. Thoughts ?????

I would not use the shoulder bolt. It needs to be a tight fitting pin, peened in place. You may even consider just finding another pedal with a tight shaft.

It would save a heap of work, which can be done at a later time, if you just weld the pedal to the shaft on the end, as suggested. Drive on and do a fix when you have the hogshead off some time.

Allan from down under.

Allan wrote: ↑

Mon Oct 14, 2024 3:09 am

It would save a heap of work, which can be done at a later time, if you just weld the pedal to the shaft on the end, as suggested. Drive on and do a fix when you have the hogshead off some time.

Allan from down under.

Agree with Allen. Had to do that with my low pedal when I replaced the shaft. The pedal should be a press fit to the shaft, but no matter how much I heated the pedal, and froze the shaft I could only get it to go part way. My machinist reamed the pedal shaft so it wasn't as tight a fit, but it worked loose. A couple tack welds solved the issue.

Had similar occurrence, engine was rebuilt, however the low pedal used was original, and installed with a new slow speed notch.

The shaft likely had its hole wallowed out when removing a used notch, and the new rivet seemed to secure the shaft, but no.

When adjusting the low pedal band, the pedal kept moving, at least an inch, back and forth by hand.

Did the proper fix, pulled the hogshead, replaced that used pedal shaft with new shaft, and re-riveted the pedal and slow speed notch.

Hi Dan,
I try not to use replacement pins for this reason. If at all possible I use tapper pins & leave extra so if the pin comes loose later it can be driven
deeper to tighten it. You will need the proper tapered reamer to make the hole. I buy the longer tapered pins & cut to length. Welding should
be the last resort but if you do make sure to put the ground on the pedal so you don't weld or arc something you didn't want like the shaft to the hogshead.
Craig.