Traction Hydro transmission and diff lock

[navycryppie]

So, took delivery on my 3520h last night from Bruce Danielson, and happy to report that his customer service is everything I expected from the reviews here on TBN. I've got a little seat time moving a few dirt (mud) piles around the yard, and had a question for the fellow hydro owners. Being that the diff lock pedal is behind the forward/reverse controls, exactly how are you supposed to USE the diff lock function? On my Kubota, the pedal is on the left, which makes more sense. I'm trying to figure out what kind of contortionist can actually do it. Suggestions? :confused3:

 

[oldnslo]

On my 2400H they made it hand operated on the right side which is of little help if you also operating the FEL controls. Needs to be like older Deeres where it locked in place until you touched one of the brakes.

 

[Texasmark]

My 2400 and 6530 have a press to apply and release to release. It only locks while you hold the pedal down. I have had other tractors where you press to engage and press again to disengage by using the diff. locking pedal However, if the system is under compression, it may not release till you release the compression....like if you are on a hill or up against something, you would have to let go of the pedal or pull away from the obstacle, release the pedal and let the rpms go to idle. In worst case a little F to R rocking with the pedal released.

 

[navycryppie]

Well, I've put almost 10 hours on it, and so far fairly impressed with power and how it handles. And, near as I can tell, to use the diff lock requires some fancy footwork. I've tried using it a couple times now, and found the most comfortable (least contorted) way is to use my right heel for the diff pedal, while reaching over with my left foot on the drive pedals. Not ideal, but it does work.

Now, my next question for those of you with a hydro, why is there a 'link' setting for the PTO? There is no clutch pedal, therefore making 'ind' the only real option. Thoughts?

 

[coralhead]

Well, I've put almost 10 hours on it, and so far fairly impressed with power and how it handles. And, near as I can tell, to use the diff lock requires some fancy footwork. I've tried using it a couple times now, and found the most comfortable (least contorted) way is to use my right heel for the diff pedal, while reaching over with my left foot on the drive pedals. Not ideal, but it does work.

Now, my next question for those of you with a hydro, why is there a 'link' setting for the PTO? There is no clutch pedal, therefore making 'ind' the only real option. Thoughts?

The link setting on my 4520r is to shut the PTO off when the 3pt lift is moved to the up position.

 

[motownbrowne]

The link setting on my 4520r is to shut the PTO off when the 3pt lift is moved to the up position.

I've seen that feature on a few tractors. To me that seems like trouble waiting to happen. If I'm correct, the PTO shuts off when the 3 point is raised all the way and then turns back on when you lower it. I don't want the PTO coming on automatically under any circumstances. What if you had a medium duty bush hog on the tractor, running full throttle and forgot that that feature was engaged. You lower your three point and engage the PTO at full throttle instead of a nice low idle. Lots more stress on the drive components.

It just seems like engaging the PTO should be an intentional action undertaken carefully.

 

[Texasmark]

The Link may be similar to my 6530 which has "Live" and "Independent" functions. There is no second clutch like the Live PTOs of old....my Ford 3000 has that......half way down on the clutch pedal you control the implement and all the way down you control the tractor movement.

It has 24, I think I remember, little clutch discs in the PTO drive line that are electrically engaged (lots of discs to distribute the shock load of a spinning drive shaft and a quiescent implement.....like a brush hog energizing for example) and I think you are correct Mr. Motown that the 3 pt sensor also controls the energizing and deenergizing of the PTO solenoid.

Directions are in my manuals but I never use it so I'm not clear on it, but if necessary I can go out to the shop and get the information you need......assuming yours is identical...and why not....double clutches are the thing of the past.....I think.

 

[Texasmark]

The Link may be similar to my 6530 which has "Live" and "Independent" functions. There is no second clutch like the Live PTOs of old....my Ford 3000 has that......half way down on the clutch pedal you control the implement and all the way down you control the tractor movement.

It has 24, I think I remember, little clutch discs in the PTO drive line that are electrically engaged (lots of discs to distribute the shock load of a spinning drive shaft and a quiescent implement.....like a brush hog energizing for example) and I think you are correct Mr. Motown that the 3 pt sensor also controls the energizing and deenergizing of the PTO solenoid.

Directions are in my manuals but I never use it so I'm not clear on it, but if necessary I can go out to the shop and get the information you need......assuming yours is identical...and why not....double clutches are the thing of the past.....I think.

 

[TXWELDER]

So, about the diff lock? Today is day one on my 5220H and I could not figure how to actually use the diff lock and engage the F/R pedals.

 

[ericm979]

I use my left foot on the diff lock. Or sometimes operate the HST pedals with my left foot while the right is on the diff lock. Or disconnect the two brake pedals and brake the one wheel that's slipping.