Looking for A343F Output Shaft Spline Count, Diameter, and Length

This site may earn a commission from merchant affiliate
links, including eBay, Amazon, Skimlinks, and others.

O

OutlawMike

Joined
Oct 9, 2018
Threads
15
Messages
318
Location
Santa Rosa, CA
Hello,

My first post got moved to the Classifieds. Will try this one. I am looking for the dimensions for the A343F output shaft. Spline count, diameter, and spline length.. This is a technical question,

To help answer this question, if someone has a used output shaft, I would like to buy or borrow it to do a dimensional takeoff of the shaft dimensions.

If anyone knows of a transmission dismantler where I can get a used output shaft, that would be a great help.

Thanks,

Mike
 
The nominal effective spline length (as I measured it) and tooth count are: 55-mm and 19. The nominal shaft size is Ø35-mm.

I have no way to measure the spline itself, because I don't know what size it's supposed to be and therefore I don't know what size pins to use. I assume these are JIS D2001-1959/B1603-1995 splines. That would make it a JIS 35x19x"something" (and some fit).

According to the B1603 I have (which is in Japanese, and which I don't read) the module is either 1.25 (Ø33-mm) or 1.5 (Ø34-mm); I can't tell which Toyota used. It's anyone's guess which fit Toyota used. I know what the SAE fit would be, but there's no way to cross that.

Try @slow95z
 
Malleus said:
The nominal effective spline length (as I measured it) and tooth count are: 55-mm and 19. The nominal shaft size is Ø35-mm.

I have no way to measure the spline itself, because I don't know what size it's supposed to be and therefore I don't know what size pins to use. I assume these are JIS D2001-1959/B1603-1995 splines. That would make it a JIS 35x19x"something" (and some fit).

According to the B1603 I have (which is in Japanese, and which I don't read) the module is either 1.25 (Ø33-mm) or 1.5 (Ø34-mm); I can't tell which Toyota used. It's anyone's guess which fit Toyota used. I know what the SAE fit would be, but there's no way to cross that.

Try @slow95z
Click to expand...
Thanks for the detailed info. I appreciate it.
 
i have a transmission that i could pull the output shaft out of for you and ship it your way. send me a private message and we can work something out.
 
slow95z said:
i have a transmission that i could pull the output shaft out of for you and ship it your way. send me a private message and we can work something out.
Click to expand...
Thanks. I will get back to you shortly. Another member PM'd me and he may have one. If that does not work out, I will get back to you. Love working with people on this board. Great community.
 
OutlawMike said:
Hello,

My first post got moved to the Classifieds. Will try this one. I am looking for the dimensions for the A343F output shaft. Spline count, diameter, and spline length.. This is a technical question,

To help answer this question, if someone has a used output shaft, I would like to buy or borrow it to do a dimensional takeoff of the shaft dimensions.

If anyone knows of a transmission dismantler where I can get a used output shaft, that would be a great help.

Thanks,

Mike
Click to expand...

Transtar has hard parts divisions in every major city. There are usually locally based parts houses that are better deals. Google "automatic transmission parts near me".

Curious what you're trying to do? Someone familiar with reverse engineering automotive shafts would typically be very familiar with where to buy example parts.
 
PIP said:
Transtar has hard parts divisions in every major city. There are usually locally based parts houses that are better deals. Google "automatic transmission parts near me".

Curious what you're trying to do? Someone familiar with reverse engineering automotive shafts would typically be very familiar with where to buy example parts.
Click to expand...
Thanks, I will check them out also.
 
Last edited:
slow95z said:
i have a transmission that i could pull the output shaft out of for you and ship it your way. send me a private message and we can work something out.
Click to expand...
Thanks again for the offer. Another member has the part 2 hours from my house. I will go for that one.
 
I think he may be designing an overdrive unit to fit between the transmission and the transfer case??

:idea:
 
You are designing an overdirve unit for the 95-97 FZJ80's (wave of hand).
 
OutlawMike said:
Hello,

My first post got moved to the Classifieds. Will try this one. I am looking for the dimensions for the A343F output shaft. Spline count, diameter, and spline length.. This is a technical question,

To help answer this question, if someone has a used output shaft, I would like to buy or borrow it to do a dimensional takeoff of the shaft dimensions.

If anyone knows of a transmission dismantler where I can get a used output shaft, that would be a great help.

Thanks,

Mike
Click to expand...

Malleus said:
The nominal effective spline length (as I measured it) and tooth count are: 55-mm and 19. The nominal shaft size is Ø35-mm.

I have no way to measure the spline itself, because I don't know what size it's supposed to be and therefore I don't know what size pins to use. I assume these are JIS D2001-1959/B1603-1995 splines. That would make it a JIS 35x19x"something" (and some fit).

According to the B1603 I have (which is in Japanese, and which I don't read) the module is either 1.25 (Ø33-mm) or 1.5 (Ø34-mm); I can't tell which Toyota used. It's anyone's guess which fit Toyota used. I know what the SAE fit would be, but there's no way to cross that.

Try @slow95z
Click to expand...
Three year bump as I found myself in the same positions. I’m able to take measurements on my spline shaft, and cross referencing B1603 with AI gave me this
1789692536233.webp

This lore is less complies with that I measured, can you confirm?
 
To start, and not to pick, why do you need to know?

To answer your post directly: once again, AI proves how stupid it is.

What you are being given is an equivalent SAE spline for the metric spline, which I believe Toyota used.

And BTW, not a "European" metric – no such standard exists; "European" standards are either the old DIN (German) standards, or ISO (French, by decree). And, Toyota is not a "heavy equipment manufacturer" in the passenger vehicle commercial sector (which Land Cruisers are classified in). Heavy equipment is CAT/John Deere/Volvo/Komatsu, etc. earthmovers, and a very few very large tractors, again JD/Claas, etc. ; not passenger trucks. The only Ø35–mm drive spline you'll find on one of these pieces of equipment is a hydraulic motor output shaft.

I have no way of proving the spline is a JIS metric, because I don't have the design data; I made an assumption that a very large, well established, Japanese company producing production automotive power transmission components would very likely use JIS automotive standards to do so. Lots of splines, gears, threads, etc. are so close it's possible to mistake one for another, given the allowable manufacturing tolerances, and lack of any verifiable reference.

My data comes from personal experience, BTW; I used to be a product planning engineer for Dana Off–Highway Heavy Equipment. All these companies were my customers.
 
Malleus said:
To start, and not to pick, why do you need to know?

To answer your post directly: once again, AI proves how stupid it is.

What you are being given is an equivalent SAE spline for the metric spline, which I believe Toyota used.

And BTW, not a "European" metric – no such standard exists; "European" standards are either the old DIN (German) standards, or ISO (French, by decree). And, Toyota is not a "heavy equipment manufacturer" in the passenger vehicle commercial sector (which Land Cruisers are classified in). Heavy equipment is CAT/John Deere/Volvo/Komatsu, etc. earthmovers, and a very few very large tractors, again JD/Claas, etc. ; not passenger trucks. The only Ø35–mm drive spline you'll find on one of these pieces of equipment is a hydraulic motor output shaft.

I have no way of proving the spline is a JIS metric, because I don't have the design data; I made an assumption that a very large, well established, Japanese company producing production automotive power transmission components would very likely use JIS automotive standards to do so. Lots of splines, gears, threads, etc. are so close it's possible to mistake one for another, given the allowable manufacturing tolerances, and lack of any verifiable reference.

My data comes from personal experience, BTW; I used to be a product planning engineer for Dana Off–Highway Heavy Equipment. All these companies were my customers.
Click to expand...
Well to be honest, it did tell me to use some pins and take the measurement, so see if it’s 1.75module or 1.66
 
I said the same thing, except I admitted I couldn't tell you which pins and it matters which you use; use the wrong ones and you'll get accurate "wrong" measurements.
 
When I get home I will pull up the 3D model for the spud shaft that we designed for the 8HP swap kit. Daniel at DomiWorks in Sweden has the output shaft that I sent him. I did a CMM inspection of the spines when I had it. Even though we had a 3D model, he still sent both the trans output and TC input shafts to the spud shaft manufacturer so they could make sure we got the correct fit.
 
OutlawMike said:
When I get home I will pull up the 3D model for the spud shaft that we designed for the 8HP swap kit. Daniel at DomiWorks in Sweden has the output shaft that I sent him. I did a CMM inspection of the spines when I had it. Even though we had a 3D model, he still sent both the trans output and TC input shafts to the spud shaft manufacturer so they could make sure we got the correct fit.
Click to expand...
That would be helpful.
If you can let me know who manufacturer the stub shaft as well, I need a machine shop to do mine. I got this far but I need to populate the spline chart with actual info.

1789760444334.webp
 
ThreeEyedBandit said:
Might check with Northwest Fab. The make doubler's that fit the HF2AV, so they should know the specs of the spline and could possibly manufacture one for you.
Click to expand...
They actually got back to for an RFQ, fingers crossed they can accomodate.

In the spirit of forum, I'm posting the spline info I was able to dig up. I cannot confirm if this is right, wrong, whatever, but this is what I got so far.
1789777304877.webp
 
You must log in or register to reply here.

Share this page

IH8MUD Forum | Toyota, Lexus & Off-Road Community
Community platform by XenForo® © 2010-2026 XenForo Ltd.

© 2000-2026 Tie Rod Media LLC

XenForo add-ons & extensions by xenBaker
Back
Top Bottom