Topic: Transmission trouble


silverchief    -- 11-18-2025 @ 11:51 AM
  I have owned my. stock 1946 for 20 years and the tran smission has always worked fine. Last was serviced one year ago.
Now all of a sudden I get a slight clash of gears when I shift in first to start out, an d a strong clash of gears when I shift into third.

The clash in third dives not occur if you wait about 10 seconds after shifting into second brfore going to third

Me and my mechanic have both examined the shifting mechanism under the hood and the connections at the transmission.
Everthing is clean, lubricated and correctly connected. The fluid level is fine but the owners manual calls for 90 weight oil so am going to start there.

Can,t image what is wrong and will welcome any suggestions.






carcrazy    -- 11-18-2025 @ 2:09 PM
  Your clutch may not be releasing fully when you shift gears.

Check your clutch pedal free play. It should be between 1 1/4" and 1 1/2". If it is greater than that, the clutch won't fully release even though you press the clutch pedal all the way to the floor.


Drbrown    -- 11-23-2025 @ 8:00 AM
  Agree with Carcrazy.


pauls39coupe    -- 11-24-2025 @ 4:44 PM
  I agree, the clutch may not have enough free play. Check that first.
Also check the cross shaft and linkage that controls the throw out bearing. Cracks in the shaft or arm can be deceptive allowing the free play to change under pressure then snap back to normal.
If you have a pilot bearing rather than a bushing, they have been known to freeze up causing the input shaft to turn even if the clutch is fully released.


Barney    -- 11-29-2025 @ 6:19 AM
  I believe what Paul meant to state is that your clutch may have too much free play. I don't know the specs, but even 1 1/4" - 1 1/2" seems like a bit much. I think 3/4" is fine as long as you don't get complacent and allow it to get to near 0"
Barney


trjford8    -- 11-30-2025 @ 9:18 AM
  I agree about the clutch free play.


silverchief    -- 12-02-2025 @ 11:24 AM
  Thanks guys but wouldn't poor clutch adjustment show up when shifting into first at a stop, or first to second?

I put in correct fresh gear oil -no help. Shifting rods are clean and set correct.

Waiting 5 seconds in neutral before completing pull down into third results in nice quiet shift. What does that indicate???

Thanks for your help.


silverchief    -- 12-02-2025 @ 11:33 AM
  Thanks guys but wouldn't a needed clutch adjustment show up in shifting into first after a stop - or first into second?

I think waiting a few seconds in second gear before pulling down into third for a smooth quiet shift is pointing to the problem, but it is beyond me.

Thanks for your help.


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