MF 7400 questions and answers

[davidroberts30]

sh!t...yes i remember it now !! )) check tomorrow
David, how long have you had your 7400 ? you are like a walking MF encyclopedia

6 year
I just read the book and manual
still find out a few new things now and again

 

[Antares 6]

I am thankfull you are there have learnd alot ! this thread is good for all first time MF vt owners.

 

[masseyman74]

It’s a great thread. I have a 7480 tier 2 and I’m still learning and asking questions.

 

[Antares 6]

David, have you calibrated your transmision several times ?
If so was it only the first time you could feel a diffrence/improvement ? how long since last cal ?
What is it that happends with the trans that requier calibration ?

 

[davidroberts30]

First time I did it was approximately 10k hours
Big difference after that 1
Have done it since but not noticed anything significant

 

[Antares 6]

Can you say with a few words what the problem was before the first cal and how/what difference you could feel.

 

[davidroberts30]

Can you say with a few words what the problem was before the first cal and how/what difference you could feel.

Before cal it was 54kmh at 1840rpm
After 54k at 1760rpm
And just generally a bit smoother

 

[Antares 6]

Spoke with the previous owner today, last and only calibration the dealer did was about 5000hours ago, he had always delivred the tractor to the MF dealer for all 400 and 1000hours services.
So i think it is time ))

 

[Antares 6]

I spoke with the previous owner who had this 7480 14years before i bought it, i was told that Power Boost switches on over a certain speed under heavy transport or when the electronics feels that pto needs extra power.
I guess this is how it works, i am sure i actualy can feel that the pto sudently deliver extra power to the 2,7m wide snowblower when it really works hard, it "kicks in" and the pto rpm rises.
What do you others say about this ?

 

[davidroberts30]

I spoke with the previous owner who had this 7480 14years before i bought it, i was told that Power Boost switches on over a certain speed under heavy transport or when the electronics feels that pto needs extra power.
I guess this is how it works, i am sure i actualy can feel that the pto sudently deliver extra power to the 2,7m wide snowblower when it really works hard, it "kicks in" and the pto rpm rises.
What do you others say about this ?

I thought the 6400 and 7400 had same engine .
The 6400 had power boost under certain conditions but thought the 7400 ran the power boost all the time
This on t3 not sure about t2

 

[Antares 6]

But what is the point with power boost if it is there all the time...then it is an 155hp engine and not an 145hp with +10hp when needed ?...or...just try to think logical

 

[Antares 6]

This photo is from an 2013 6470, can this be the Power Boost buttom on 6400 series ? or id it something else ? as you know i also have this buttom in my 7480 at the same location but i not know what it is for, the previous owner not know what it is for, he never used it.
Somebody know ?

 

[davidroberts30]

This photo is from an 2013 6470, can this be the Power Boost buttom on 6400 series ? or id it something else ? as you know i also have this buttom in my 7480 at the same location but i not know what it is for, the previous owner not know what it is for, he never used it.
Somebody know ?

doesnt that button toggle the info on the right data screen

 

[davidroberts30]

But what is the point with power boost if it is there all the time...then it is an 155hp engine and not an 145hp with +10hp when needed ?...or...just try to think logical

Think mf marketing made the 5400 the lower spec,6400 mid range and 7400 top of the range so i assume the boost is part of the higher spec

 

[Antares 6]

doesnt that button toggle the info on the right data screen

Not on my but maybe on 6400 ?

 

[Antares 6]

You know, this is the place to crack such riddles

 

[Tommy]

That button is for headland management. You press it every time you want the next command to happen in the sequence that’s been programmed in the data screen. Didn’t think 7400 had a boost at all

 

[Antares 6]

Thanks Tommy
Then i will check if my 7400 is ordred with this funtion from MF, i see that most 7400 i finds in add's here not have this button.

 

[davidroberts30]

That button is for headland management. You press it every time you want the next command to happen in the sequence that’s been programmed in the data screen. Didn’t think 7400 had a boost at all

doh i was thinking of the quick entry button

 

[Antares 6]

And i really dont know )) the previous owner had it 14years and never used it