JD 750A fan speed

[where is hardy]

I have been drilling rape with a 6130r and whilst drilling the fan speed drops from 3300 to 1000 for a moment and then peaks at 4500 and then settles at 3300 again . Any ideas ?

 

[Tractor Boy]

Might be a daft question but are your coulters on constant pumping while in work? My fan speed drops when lifting or dropping the coulters on a headland turn but then levels out where I’ve set it when the coulters are constantly pressurised whilst in work.

 

[Flatlander]

Is your fan on a priority valve. On my challenger it matters if the fan is not connected to the right outlets to receive oil first Lifting and down pressure can come after that

 

[where is hardy]

Yes it is in constant pumping it only happens for about a second the regains the correct fan speed .

 

[where is hardy]

It is also in the priority valve . Only just started happening

 

[James Ream]

If it is happening when you are dropping the coulters into work, there is a restrictor on the drill which needs adjusting to keep as much oil as possible in the back end of the tractor.

 

[marco]

I have been drilling rape with a 6130r and whilst drilling the fan speed drops from 3300 to 1000 for a moment and then peaks at 4500 and then settles at 3300 again . Any ideas ?

Have you your draft control turned off? Tractor could be trying to lift arms a little bit when the draft comes on.

 

[where is hardy]

the dealer came out to a different problem and but diagnosed a faulty sensor on the tractor which was affecting the oil flow to the fan