grinding 1st gear

[Mike in Mass]

So ,Please let me start with a little history ,Finally got my 39 1/2 ton running . GOOD . Been driving it to work everyday (loving life been waitin 28 years) for the last 2 weeks .The first few days shifting nice , when it gets hoter after driving 45 min or so , backroads ,stop sighs. it get hard to get into 1st . if I take my time an pull to the left a little it will go in . Ive lowerd the idle. checked the fluid,,, Added a little . but it still persist. I hate riding my clutch. and I know its wrong ! It sounds like its definitely with the idle ,,,,punch it down ,,, but it doesnt , Im running a 7Rt truck carb which is original to the truck. Hey an thanks guys up frontjust

[Ggmac]

Have you tried shifting into 2 after stopping and before sticking it in 1st ?

[40 Deluxe]

Originally Posted by Ggmac

Have you tried shifting into 2 after stopping and before sticking it in 1st ?

Yep, that is standard procedure when driving a vehicle with non-synchromesh 1st gear. Shifting to 2nd or 3rd uses the synchronizer blocking rings to stop the counter shaft from turning, and then you can shift to 1st or reverse without grinding.
If it still grinds going into 1st, the clutch is dragging. Make sure the freeplay is properly set.

[Tinker]

Double clutch it.

[cas3]

got the correct free play on the pedal so the clutch is not dragging?

[Ken/Alabama]

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Originally Posted by cas3

got the correct free play on the pedal so the clutch is not dragging?

What cas3 said. Adjust the clutch linkage.

[George/Maine]

You may not have the original trans,39 is a one year lever on trans.
If the lever is like from a 32 its longer say 4" the 39 should be about 3 1/2" Long.
By being shorter it will stop clutch drag. I found that out on my 39 sedan.

[Mart]

This is a video I made of how to check if the clutch is releasing.

Disclaimer - it may seem brutal to a person not familiar with what is being done. It does Require skill and finesse, and if done carefully will not distress the gear teeth.

https://youtu.be/PC_1gKwSrZE

Mart.

[fordscript]

What grade gear oil are you using? It seems okay when its cold, when the oil is thick. As it warms up, the oil is getting thinner (lighter), and not slowing the cluster down as quickly.

[dwick01]

I like your videos Mart.

[Mike in Mass]

Thankyou gentleman . Putting it 2cd ,then into 1st is the trick ,for sure . I have been driving "Doris" to work everyday for the last month . .Thanks again Mike P

[glennpm]

Good video Mart. Thanks for sharing it!

[glennpm]

Hi George,


I'm curious about your mention about the different arm lengths, "If the lever is like from a 32 its longer say 4" the 39 should be about 3 1/2" Long. By being shorter it will stop clutch drag". Which arm are you referring to, the external one on the clutch shaft or the throughout bearing arm? Don't see how the throughout arm could be of a different length. I have a 39 transmission in my 32 with stock 32 pedals and arms.



Glenn

[V8COOPMAN]

Originally Posted by glennpm

Hi George,


I'm curious about your mention about the different arm lengths, "If the lever is like from a 32 its longer say 4" the 39 should be about 3 1/2" Long

Glenn

Just for yuks, here is a comparison of the different arms available. DD

[glennpm]

Great, thanks George!

[V8COOPMAN]

Originally Posted by glennpm

Great, thanks George!

Please, PLEASE don't ever confuse ME with George! DD

[glennpm]

Looks like I need to get a 39 arm. My clutch releases close to the floor board with maybe 3/4” to 1” of free movement at top.

Glenn

[glennpm]

Originally Posted by V8COOPMAN

Please, PLEASE don't ever confuse ME with George! DD

Sorry about that 😄

[V8COOPMAN]

Originally Posted by glennpm

Sorry about that ��

We're cool!


I THINK Drake has that arm in repro. DD

[glennpm]

George where you able to clear the ant-chatter rod or remove it? Looks to me that the 39 arm can’t be used in the 42 without taking out the ant-chatter rod.

Thanks,
Glenn

[George/Maine]

You mean 32 If you use the 39 pedals and 39 arm will work.
If you use 40 pedals the arm is on frame and use 40 to 49 slot and horz is not the same type. Those ant chatter rods one will do.
With a 32pedal could you use a 32 trans arm. They are matched length.
I found that I had a 32 arm on my 39 and was grinding gears.
39 is a one only setup. Glen ever get to Gardner cruise in.






My new ride

[glennpm]

Yes, I meant “32”. I’m going to leave it as is, a set for a 32.

Thanks

[V8COOPMAN]

Originally Posted by glennpm

George where you able to clear the ant-chatter rod or remove it? Looks to me that the 39 arm can’t be used in the 42 without taking out the ant-chatter rod.

Thanks,
Glenn

Glenn...'42s through '48 (US-built) did away with anti chatter rods. Canadian cars still used the rods, but they ran forward like ALL of the '41s did! DD

[cmbrucew]

Originally Posted by glennpm

Sorry about that 😄

Different accent completely.
Bruce