2555 throttle response

[Nortac]

I'd like to hear more about the RPM, I am purchasing a 2565 Shuttle Cab, non HST...I'd hate to have issues out the door. I borrowed a new JD tractor and it had issues with RPM and not interested in starting that over.

 

[akax50]

Jabonee, our 2555 does have "load sense", but we never used it. I have noticed that during the summer operating in high range to move the tractor around generates a tremendous amount of heat in the HST system. 180+ degrees. No issues in the other ranges. Not sure if this is significant !

 

[Jabonee]

Can anyone here explain, in real-world terminology, what exactly "Load Sensing" is and how it would limit my engine speed when it's not engaged?

My Mahindra DSR explained "Load Sense" as keeping the engine RPM ahead of the drive load. Basically it destrokes the HST pump to maintain engine RPM's.

 

[Jabonee]

Jabonee, our 2555 does have "load sense", but we never used it. I have noticed that during the summer operating in high range to move the tractor around generates a tremendous amount of heat in the HST system. 180+ degrees. No issues in the other ranges. Not sure if this is significant !

180 degrees is about right for summertime. Remember rule of thumb for hyd temp is 100 degrees above ambient temp.:thumbsup:

 

[akax50]

180 degrees is about right for summertime. Remember rule of thumb for hyd temp is 100 degrees above ambient temp.:thumbsup:

Yea, my point was not that it was running too hot, just way hotter in high range than in the other ranges. I assume that the difference is pressure related. Again, not sure of significance to your issues?

 

[Uncle Hulka]

My Mahindra DSR explained "Load Sense" as keeping the engine RPM ahead of the drive load. Basically it destrokes the HST pump to maintain engine RPM's.

I appreciate you replying. Do you or your DSR knoe if load sense has any impact on PTO load (or vice versa)?

 

[Jabonee]

I appreciate you replying. Do you or your DSR knoe if load sense has any impact on PTO load (or vice versa)?

No mention of load sensing effecting the PTO. I'll ask next time I speak to him.:thumbsup:

 

[Uncle Hulka]

Much appreciated, Jabonee. If you have the time, could you explain what I'm experiencing please.

Regardless, thanks!

 

[DirtHauler]

When I bought my 2555 shuttle I noticed that there wasn't much throttle past a certain RPM point either with the hand control or foot pedal, so being the tinkerer that I am, I solved this (Mahindra and it's dealers won't like this!) by readjusting the brass cable stops at throttle control on the engine. I now have all kinds of RPMs even at the PTO.

 

[Jabonee]

Thought I'd reach out to you 2555 owners again on this thread. Iv'e this same tractor back now that the cold weather has set it. He's got the MIL light coming on. Of coarse its out when I get. I check the ECU codes and its pointing toward the EGR valve sooting up. Thats a indicator the engine is not being run hard enough. Anyway I noticed with this unit , a pawn cold start ,I cannot run the RPMs up that high.Now I'm not starting the engine and throwing the lever full bore. After a minute or 2 of warm up I advance the lever but just above low idle the engine begins to miss and spudder with little puffs of smoke. Anyone else notice this on there tractor?? Engine smothes out as the engine warms up. I'm wondering if my customer is impatient a running the tractor running rough causing the EGR to soot up quick. Any thoughts??:confused3: