3 speed transmissions
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Mountain Pass
Joined: Oct 2018
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3 speed transmissions
Hello! I have a 64 f100 with a three speed on the column and 292 y block. Lately I have been having a really tough time shifting, it is difficult to push into to gear and it has started grinding often, especially into 2nd and also now reverse. I can push the clutch in with the shifter in neutral and start the truck, but will still grind when put in reverse.
Could degraded rubber motor mounts be an issue? This transmission was rebuilt about 30,000 miles ago.
Also, I have a 3 speed column shirt transmission from a 65 f100 that has been rebuilt. Would this be a “bolt-in” swap into my truck?
Thanks in advance!
CJ
Could degraded rubber motor mounts be an issue? This transmission was rebuilt about 30,000 miles ago.
Also, I have a 3 speed column shirt transmission from a 65 f100 that has been rebuilt. Would this be a “bolt-in” swap into my truck?
Thanks in advance!
CJ
Senior User
Joined: Dec 2018
Posts: 243
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From: Elizabeth
Start with the clutch and make sure you have sufficient free travel and that the clutch is fully disengaging. If you push the clutch in before starting and there is gear clash after firing, something is causing the tranny guts to rotate so the clutch isn't releasing or there is a bind on the clutch disk.
Bad mounts and bushings generally results in hard to shift conditions. That said if the engine mounts are bad, the clutch could have come out of adjustment.
Also if the idle is set too high it will contribute to these issues.
Bad mounts and bushings generally results in hard to shift conditions. That said if the engine mounts are bad, the clutch could have come out of adjustment.
Also if the idle is set too high it will contribute to these issues.
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Mountain Pass
Joined: Oct 2018
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I was thinking the same, but it seems strange that this issue only started about a week ago and quickly got worse. Wouldn’t there be a larger gap when disengaged with a worn clutch?
Thanks for the quick reply!
Thanks for the quick reply!
Thread Starter
|
Mountain Pass
Joined: Oct 2018
Posts: 111
Likes: 0
Start with the clutch and make sure you have sufficient free travel and that the clutch is fully disengaging. If you push the clutch in before starting and there is gear clash after firing, something is causing the tranny guts to rotate so the clutch isn't releasing or there is a bind on the clutch disk.
Bad mounts and bushings generally results in hard to shift conditions. That said if the engine mounts are bad, the clutch could have come out of adjustment.
Also if the idle is set too high it will contribute to these issues.
Bad mounts and bushings generally results in hard to shift conditions. That said if the engine mounts are bad, the clutch could have come out of adjustment.
Also if the idle is set too high it will contribute to these issues.
Senior User
Joined: Dec 2018
Posts: 243
Likes: 4
From: Elizabeth
A bad cab mount will effectively shorten the stroke of the clutch linkage and potentially put a bind on the shift levers.
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Cargo Master
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From: tucson
Thoroughly check all the parts of the pedal assembly and Z-bar. I had problems with my '64 earlier this year. The clutch was worn. The clutch pedal rod was grooved at both ends and actually broke at the 90* bend. And then the Z-bar cracked at a weld on one of the arms causing it to loose one of the bushings on the end. Now with all things fixed, shifting is a breeze.
John
John
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Thread Starter
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Mountain Pass
Joined: Oct 2018
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Thoroughly check all the parts of the pedal assembly and Z-bar. I had problems with my '64 earlier this year. The clutch was worn. The clutch pedal rod was grooved at both ends and actually broke at the 90* bend. And then the Z-bar cracked at a weld on one of the arms causing it to loose one of the bushings on the end. Now with all things fixed, shifting is a breeze.
John
John
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Mountain Pass
Joined: Oct 2018
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I went ahead and installed the new motor mounts. Does anyone know how tight these are supposed to be? The grinding went away for the most part and it is easier to shift than it was, but still not like how it should be. It still seems to be binding up when shifting and still grinds at times when shifting to 2nd or reverse. Even at a dead stop I struggle to pull it into first gear because it just doesn't want to drop into gear. It doesn't make any sense for a worn clutch to cause this. My clutch engages at around 2 inches above the floor but also has about 2 inches of free play at the top of the pedal. It has been slipping for a few months, but the shifting issue was over the course of a few days.
Thanks again!
Thanks again!
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