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how to get ahold of wardner???

Bornred,

Just ask the question on the forum. Tell us what you have and what you want to do. I assume you want to change the ratio on a mechanical TA tractor.
 
Trying to slow down an MTA. I thought I had seen at one time where you had put a 560 ring and pinion in a MTA. I do have access to the 560 ring and pinion. Are there any other parts needed? I thought I seen mention of a bearing carrier that needed to be changed as well. How much will it slow down an MTA?
 
Bornred,

Yes, I did put a 560 gearset in a SMTA. This was more than ten years ago and I can't remember the details. I know that either the IPTO or the mainshaft uses a different bearing at the partition between the transmission and differential.

I had a complete 560 rear frame and I was able to make do with what I had between both tractors. I know that I would have opted for the larger bearing if there had been a choice. I also think that it won't be necessary to use the wider bearing and matching retainer if you don't have them.

In situations like this, I always consult both parts books and look at all the affected parts. You can go to the CaseIH on-line parts book and do the research.

Lets assume that there is a different bearing and retainer on the rear of the mainshaft and you don't have the parts. In that case you could have a new snap-ring groove machined on the 560 mainshaft.

If you are also looking for a lower first gear, I think you will find the 560 first gear to be about 10% slower.

D Slater has all this interchange info burned into his brain. Perhaps he will respond.
 
F560 ring and pinion = 49/15 = 3.27
SMTA F400 F450 ring and pinion = 50/19 = 2.63

F560 gears in a SMTA will slow the tractor by 19.6%
 
"Wardner, how about the ratio on a SW6-TA, do you know what it is?"

I am assuming the SW6TA is the same as a W-400. My W-400 has 18-30 tires. Don't know what you have. Anyway, my W-400 book only lists one set:

Ring and pinion = 47/19 = 2.47

F560 gears in a W-400 will slow the tractor by 24.5%

Bear in mind that a 19 tooth pinion running against 47 tooth ring gear is not the same part as a SMTA 19 tooth pinion running against a 50 tooth SMTA ring gear. But not to worry. The 560 pinion is 15 tooth anyway. But both the 560 and W-400 have 47 teeth on ring gear. They cannot be swapped because the tooth profile will be slightly different.
 
"They cannot be swapped because the tooth profile will be slightly different."

I didn't write that quite right. It should be:

They cannot be interchanged because the tooth profile will be slightly different.

In other words, change out the complete set of two matching gears as supplied on the F560.
 
My memory needs refreshed on this, what I remember now is a serial # cut off on the F560 rear housings. First type used the same main shaft rear bearing retainer as a 400 ETC. Other type used 4 bolt retainer with a different transmission housing. Same main shaft works in both. Roller or ball bearing works in both retainers. F560 were equiped with a choice of 2 speeds for 1,3,4. Standard 1 is more gear reduction than a 400. 560 high speed 1&R is the same as standard 400. 560 3&4 standard is less gear reduction than a 400. Heavy tilage gears in a F560 are the same as standard 400 gears.
Depending on tire size using 1450 RPM, speeds from around 1 MPH to near 8 MPH from gears 1 through 4 are posible. Just the F560 R&P slows a 400 down a bunch. At stock RPM 4th will be around a regular M speed. Top speed will be down. If backing a distance reverse speed reduction may be a problem. If 1st gear ratios are switched the reverse idler needs switched to match also.
 
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