Transmission stud

-
grassy

grassy

Well-Known Member
Joined
Aug 20, 2009
Messages
5,352
Reaction score
86
Location
Nova Scotia
I am having a problem finding the proper nut to go on my transmission's stud that holds on the bushing.

Id there a way I can remove the stud ? Unfortunately, it is on the car now.

As for the nut that goes beside it, I had to go down one size for it to fit...it feels slight sloppy but it does fit.

Any ideas ?

ian.
 
Stud? what stud are you talking about? Kickdown pivot?
 
grassy said:
I am having a problem finding the proper nut to go on my transmission's stud that holds on the bushing.

Id there a way I can remove the stud ? Unfortunately, it is on the car now.

As for the nut that goes beside it, I had to go down one size for it to fit...it feels slight sloppy but it does fit.

Any ideas ?

ian.
Click to expand...

Pictures please.
 
Just a guess im thinking its the stud that comes out the bottom side of the transmission mount. The top side getting bolted to the trans
 
I should be clearer. I sometimes assume folks know what I am talking about.

Here is the diagram. On the bottom of the 727 transmission, there is a hole and a stud where you bolt on the transmission bushing. it is a fine thread and I cannot seem to match the stud size.

Rather than messing around anymore, if I could get the stud out, I may be farther ahead.

Is there anything published my Chrysler that talks about bolt and nut sizes ?

We appreciate your help.

Calum and Ian

trans%20copy-XL.jpg
 
Oklacarcollecto said:
Does the bolt and the stud share the same thread size and pattern? If so take the bolt down and see about a nut to fit it.
Click to expand...

This is where it becomes odd.

I have a template for hole sizes. I measured it...and bought a nut and bolt in that size. The bolt was too large for the hole and the nut was too small for the stud.

So i bought a bolt one step smaller and a nut one step larger .. all in fine thread.

The bolt will fit but it feels a bit loose and the nut is too big.

Odd, eh ?

Ian.
 
grassy said:
This is where it becomes odd.

I have a template for hole sizes. I measured it...and bought a nut and bolt in that size. The bolt was too large for the hole and the nut was too small for the stud.

So i bought a bolt one step smaller and a nut one step larger .. all in fine thread.

The bolt will fit but it feels a bit loose and the nut is too big.

Odd, eh ?

Ian.
Click to expand...

You did get a SAE nut and bolt and not Metric didn't you?
 
Yes. the guy I was dealing with has restored a couple of trucks so he is more knowledgeable than the average employee.

We put away all our metric tools when we started this build.

ian.
 
I thought about clamping on to it with vice grips and beating it with a hammer but I have to know if it will come out..
 
I have to do some looking around to see. If you are talking about the two holes at the front of the tailshaft where the transmission mount goes, I believe that they are supposed to be 7/16 coarse thread BOLTS.

Someone could have put studs and nuts in there for some reason though.

I may not be able to verify until tomorrow as I would have to dig around in my wood room to check out some transmissions.
 
Is it possible for you to post some pictures of what you have in your car/on the trans so we can see exactly what we are all talking about?
 
They were both 7/16 x 14 x 1" bolts with a flat washer from the factory.
Use 7/16 x 14 x 1.5 with a flat washer.

We were just talking about this in another thread. :)
 
TrailBeast said:
They were both 7/16 x 14 x 1" bolts with a flat washer from the factory.
Use 7/16 x 14 x 1.5 with a flat washer.

We were just talking about this in another thread. :)
Click to expand...

I am at napa tomorrow am..and the nut for this bolt I suspect should fit the stud.

What does the 14 refer to.

Krazy, if this doesn't work, I shall take pictures but I am not sure what good they will do.

Is it hard to take out a stud ?

Thanks
ian.
 
grassy said:
I am at napa tomorrow am..and the nut for this bolt I suspect should fit the stud.

What does the 14 refer to.

Krazy, if this doesn't work, I shall take pictures but I am not sure what good they will do.

Is it hard to take out a stud ?

Thanks
ian.
Click to expand...


The 14 refers to the thread pitch, or how many threads per inch.

Get two nuts with fine thread and two with coarse thread in 7/16" diameter. Then you can remove the studs.
 
grassy said:
I am at napa tomorrow am..and the nut for this bolt I suspect should fit the stud.


Is it hard to take out a stud ?

Thanks
ian.
Click to expand...


1. No. Just put two of the same thread on the stud together.

2. Then tighten them against each other (called a "jam nut").

3. Then use the one on the top to turn counterclockways and the stud should come out. If not use some heat like a propane torch to "loosen" the stud up.
 
I'll be back later. I gotta go pick up some things at Sams for dinner. (and cat food)
 
Great ! I shall tomorrow am.

I thought bolts were course or fine. More learning to do.

Thanks krazykuda.
 
But we're not eating the cat food for dinner, if that's what some of you are thinking....
 
grassy said:
Great ! I shall tomorrow am.

I thought bolts were course or fine. More learning to do.

Thanks krazykuda.
Click to expand...

Bolts and nuts have to match.

They make both nuts and bolts in coarse and fine thread. That is why it is important to match them properly.
 
Once you find out if the stud is coarse or fine thread, use matching threads to make the jam nut.

coarse & coarse

or

Fine and fine

Do not mis coarse and fine on the same end of the stud...
 
On a bit of a change of subject, we are now buying dog food for our beagles that has been certified for human consumption..and they make cat food as well...the manufacturers are from New Brunswick..
 
Really, who knows what the stud thread is since it doesn't belong in there in the first place.

It's a start though.
 
You must log in or register to reply here.
-

Back
Top