Independent PTO

[BER]

Another newbie question: Is the dual stage clutch on a gear tractor the method for obtaining the independent PTO or is this one of more ways to obtain the independent PTO on a geared tractor?

 

[JerryG]

A lot of independent ptos are activated by a hydraulic clutch pack.

 

[Bob_Skurka]

BER there a lot of different types of gear transmissions out there in the tractor market.

This is one area were 2 similar tractors can have different prices because one can have a more or less sophisticated transmission. I can tell you that your best bet is to look at a lot of different machines and ask the dealers a lot of questions. And, of course, test drive the machines to see if they suit your needs.

 

[BER]

Thanks for the post. I guess this hyd clutch pack could be engaged/disengaged by different methods. Some might use an electric solenoid and others maybe use a mechanical lever to engage the clutch pack. Would a dual stage clutch also be used with the hyd clutch pack?

 

[rdbrumfield]

I used to operate a ferguson 35 and it had a two stage clutch. The first down pressure on it stopped the tractor and a bit more stopped the pto. I have a jd5300 now and it has a lever that engages the clutch with a lever totally separate from the main transmission. I don't care much for the JD system, but it works. I just replaced the pto clutch in mine and found that to engage the clutch they have a throwout bearing that is actually a throwin bearing. I know it is just a problem with my thinking, but I was surprised to see a system set up this way, having to force the fingers of the pressure plate in to engage the pto, thereby having the bearing under load when the pto is being used.

 

[thcri]

Here is a good explanation of a Live, independent and transmission PTO. Your two stage clutch is a live PTO, not an Independent.

PTO Explanation


Hope this helps everyone.

murph

 

[JerryG]

All of the hydraulic clutchs packs that I have ever seen were activated by solenoid.

 

[geneP]

BER, I've never heard of a two stage clutch incorporating a clutch pack. The clutch activates a mechanical shaft to drive the PTO, while the shaft is activated by the hydraulic clutch pack on the independent styles. On my Case-IH tractor the independent PTO is activated by a lever which activates a hydraulic valve to send pressure to the clutch pack to activate the PTO. This arrangement allows the PTO to be "feathered" to gently engage the implement. I've never operated a solenoid engaged PTO, so I don't know if it can be gently engaged.

 

[DK35vince]

</font><font color="blue" class="small">( I've never operated a solenoid engaged PTO, so I don't know if it can be gently engaged. )</font>

They are not very gentle, at least mine is not, so I never start implements much above idle.
But I do like the independant PTO.

 

[JerryG]

The IPTO on the MF compacts have a stepped engagement.

 

[BER]

Thanks to everyone for the information.

 

[Soundguy]

Ford used some 'lever' actuated hyd clutch packs in some implementations of independent , or live pto. ( oldies ).

Also.. the ind PTO on my NH is a lever.. feels like a good amount of mechanical resistance, and not a simple electrical solenoid style switch.

I hear that some mahindra have an electric engaged pto solenoid.

Soundguy

 

[rambler]

</font><font color="blue" class="small">( Another newbie question: Is the dual stage clutch on a gear tractor the method for obtaining the independent PTO or is this one of more ways to obtain the independent PTO on a geared tractor? )</font>

Techinically, a live pto is _not_ the same as an idependent pto.

The 2 stage ptos are considered live. They are not, however, independent.

A live pto allows you to change tractor gears while keeping the pto running. However, to engage the pto, you need to stop forward motion of the tractor - uses the same pedal to operate both clutches.

An independent pto uses a totally seperate lever to operate the pto clutch, so you may engauge or disengauge either the tranny and/or the pto at any time, totally independent of each other. Some are lever operated, as in a hand clutch, and others are hydraulicly operated, as in the lever you move changes the flow of hydraulics which apply the pto clutch.

If you are using the foot pedal to operate both the pto & tranny clutches, then you have live pto, not independent.

If you only have one clutch operated with the foot pedal, than you have neither live or independent.

--->Paul

 

[BER]

Thanks, that explaination really gives meaning to the term independent. I'm beginning to think that an independent PTO is a nice convienence, but generally not a necessity. However with that conveinence, one would get more possibilies for machine failure.

 

[rambler]

I'm perfectly happy with live pto on 2 of my tractors, and prefer it for post hole digging - better than an independent for that job.

The independent pto on my IHC 300 tractor which I use with the baler is nice, can pick up little wads of hay without stopping driving. Have one other tractor with a hand lever independent pto, but don't use pto that much. Nice tho.

I'm not so happy with the hydraulic operated independent ptos on my bigger tractors. They slam the pto pretty hard, can't feather a big load, and the pto brake slams in too can be hard on some implements. Also one has the hyds wore out, so the pto doesn't work well & is wearing out my clutches. When involving 2 systems like this, they become interdependent & repair bills go up to fix either.....

--->Paul