Mf Combines

two-cylinder

Member
Location
Cambridge
Sensor was just to throw me off the scent, turned out to be a wire touching the engine shorting the fuel solenoid valve and blowing the fuse which was somehow effecting the sensor 🙄
Pleased you've got it sorted.
Sensor's can be pain, but also a blessing- when the water pump failed on ours the engine shut down automatically- before loss of coolant became an issue.(y)
 

Rust

Member
Location
Hertfordshire
Sensor was just to throw me off the scent, turned out to be a wire touching the engine shorting the fuel solenoid valve and blowing the fuse which was somehow effecting the sensor [emoji849]
Has a claas with a badly adjusted clean grain elevator speed sensor (as it turned out) it would make alsorts kick off.
But if you turned the side lights on and off it would clear for a few hours [emoji16]🤣
 

barr11

Member
I don’t suppose anyone’s had any issues with the drum speed continually slowing down whilst in work? It’s a 36 combine, set it to 950rpm drum speed and within a few minutes it’s back down to 850, if left it just keeps winding down so have to keep clicking the drum speed switch in the cab to get it to come back up to desired speed. Not hard but a tad annoying and easily forgotten, did a tank full before realising I’d forgotten and ended up with a tank full of less than desirable sample 🤦🏻‍♂️
 

Rust

Member
Location
Hertfordshire
I don’t suppose anyone’s had any issues with the drum speed continually slowing down whilst in work? It’s a 36 combine, set it to 950rpm drum speed and within a few minutes it’s back down to 850, if left it just keeps winding down so have to keep clicking the drum speed switch in the cab to get it to come back up to desired speed. Not hard but a tad annoying and easily forgotten, did a tank full before realising I’d forgotten and ended up with a tank full of less than desirable sample 🤦🏻‍♂️
If you dont have a oil leak, I'd say it's the aluminium valve block. Fitted one 2 years ago.
First question really should have been one or 2 pipes on variable speed pulley ?
 

rob h

Member
Location
east yorkshire
I don’t suppose anyone’s had any issues with the drum speed continually slowing down whilst in work? It’s a 36 combine, set it to 950rpm drum speed and within a few minutes it’s back down to 850, if left it just keeps winding down so have to keep clicking the drum speed switch in the cab to get it to come back up to desired speed. Not hard but a tad annoying and easily forgotten, did a tank full before realising I’d forgotten and ended up with a tank full of less than desirable sample 🤦🏻‍♂️
youre loosing hydraulic pressure in the variator pulley check the pipe that supplies it for leaks.also the spindel has a rubber seal that wears then leaks
 

Wild Oat

Member
Location
Yorkshire
Just a quick question. I’ve got an mf7272 quite pleased with it but temp does get hot rad cleaned and changed fan belt and tensioner any other suggestions?
Could be worn pullies...retighten your new belts now they’re seated and then spray with anti slip belt spray. Rad could be blocked, use a torch to look, a slow job but a welding rod can be (gently) used to clear each cell.
 

Adeptandy

Member
Arable Farmer
Location
PE15
If you dont have a oil leak, I'd say it's the aluminium valve block. Fitted one 2 years ago.
First question really should have been one or 2 pipes on variable speed pulley ?
Be very careful fitting the valve block on the back of the tank, 2 wires, get them the wrong way round and it will cost you thousands of £ :banghead:
 

Rust

Member
Location
Hertfordshire
I don’t suppose anyone’s had any issues with the drum speed continually slowing down whilst in work? It’s a 36 combine, set it to 950rpm drum speed and within a few minutes it’s back down to 850, if left it just keeps winding down so have to keep clicking the drum speed switch in the cab to get it to come back up to desired speed. Not hard but a tad annoying and easily forgotten, did a tank full before realising I’d forgotten and ended up with a tank full of less than desirable sample 🤦🏻‍♂️
Single acting ram on pulley.
And the valve. I've removed the reel speed motor. Will get it fixed one day 🤣
20200906_095750.jpg
20200906_095739.jpg
 

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