PTO speed

[kenmac]

When I bought my tractor .I believe I was told 4 pto gear was around 1200 RPM @ 2250 engine RPM. I don't use 4 th anyway All I use is 1 st to hogg

 

[tallyho8]

Many years ago I had a small portable tachometer with a shaft with a rubber tip. You would just hold it on the end of a moving shaft and get a reading. If anyone has one of these it would immediately give you the correct rpms.

 

[Mickey_Fx]

Went out a took a look at the tach again to refresh my memory. Dany's number are a lot closer to what I see on my tach than the manual is. My tach shows a max of ~1400 rpm in 4th and that's at 2500 rpm.

Knew there was a reason when I was thinking about making an ST based generator I was going to have to make a OD drive train for it.

 

[1danny]

Danny,
I'm not doubting your info at all but I'm curious where you got those speeds? When we were doing research for those manuals we found a Japanese Yanmar publication that had the other speeds listed. I guess the original book could have had a misprint- we found several conflicts when researching & this could be just another one.

Aaron
Parts@HoyeTractor.com
(940)592-0181

Aaron, I got them from the OEM parts books, I assume that they are correct because some of the tractors have the PTO speeds on the side of the fenders and the one's that I've checked match up with what is stated in the parts book. Most YM and F series are ok for 540 equipment in 1st with the exception of the YM2200 & YM2700 which are 465 in 1st.

Danny

 

[1danny]

Well, with the numbers being thrown around, I went and checked my manual, "Yanmar Diesel Tractor Operation Manual, Yanmar '20 Series", MC#YM20-A, Murray Publishing, and it pretty much echos Micky's numbers:

"4 Speed, trans. driven 540 @ 2200, 1000 @ 2200, Engine Speed (appx), Slightly Overdrive".

I assume the numbers are, respectively, for #1, #2, #3, and #4.

Tom, Murray prints what you tell them to print. All 20 series pto speeds are not the same


1720 573-758-1136
1820 550-784-1096
2020-2220-2420 566-765-978-1163
2620-2820 550-677-1000-1184
3220 4220 546-686-1024-1221

Danny

 

[Mickey_Fx]

Tom, Murray prints what you tell them to print. ....

Danny

That explains why the disagreement between the manual I have and what I see on the tach.

Made an error on previous post, the 1400 pto rpm is more like @ 2200 rpm. Max on tach is more like 1500 pto rpm @2500.