Massey Ferguson Single Rotor Rake?

GAM

Member
Mixed Farmer
I asked this question I think back in 2020 when we first bought a MF RK 381 single rotor rake...

We just can't seem to set it up right!

We let it down on the top link, adjust the height of the arms, yet when you lift it up it tilts back and digs in.. any advice greatly appreciated..
 

Dave W

Member
Location
chesterfield
I asked this question I think back in 2020 when we first bought a MF RK 381 single rotor rake...

We just can't seem to set it up right!

We let it down on the top link, adjust the height of the arms, yet when you lift it up it tilts back and digs in.. any advice greatly appreciated..
Have you got the top link in the lowest tractor hole?
 

Cowabunga

Member
Location
Ceredigion,Wales
I asked this question I think back in 2020 when we first bought a MF RK 381 single rotor rake...

We just can't seem to set it up right!

We let it down on the top link, adjust the height of the arms, yet when you lift it up it tilts back and digs in.. any advice greatly appreciated..
This is probably a Fella built rake and very well established and been built for generations. Not many people can advise you blind on a forum on how to set something like this up for your tractor, there are just too many variables. If you cannot work it out, and sometimes it just isn’t simple, maybe you could ask someone else that runs one to have a look at your setup. It shouldn’t dig in at the back if only because the tines should be lifted when at the back if I remember correctly.
 

snipe

Member
Location
west yorkshire
Sounds like the top link is too long.
do you mean it digs in when you start to lift it or when you lift it right up the back is still on the floor. Pictures would help.
 

GAM

Member
Mixed Farmer
Sounds like the top link is too long.
do you mean it digs in when you start to lift it or when you lift it right up the back is still on the floor. Pictures would help.
snipe,
This has just crossed my mind, we have only used the top link that the tractor was supplied with, and it works a treat on the 4 rotor Tedder.. I will check its adjusted fully in to start with, then try a shorter one👍
 

snipe

Member
Location
west yorkshire
When the rake is level at work the top link wants to be slack but only by a little bit. But as soon as you start to lift the rake the top link wants to become tight. Bottom hole on tractor for top link, top hole on rake ( is the hole on the rake slotted).
 

KB6930

Member
Location
Borders
Digs in where ?
Does it look like this ? There's no slotted top link hole so how does it float to follow the contours ? What's the long grey bar from the headstock to the crown wheel area has it got any floating parts that are adjustable
54b09415-e092-400e-ba3e-bd5df3cad753.jpeg
 

yellowbelly

Member
Livestock Farmer
Location
N.Lincs
Does it look like this ? There's no slotted top link hole so how does it float to follow the contours ?
There's a couple of pins in the telescopic struts that go to the back of the machine that you take out, when in work.

When I saw the OP, I wondered if he was using it in transport mode :scratchhead:
 

Cowabunga

Member
Location
Ceredigion,Wales
Digs in where ?
Does it look like this ? There's no slotted top link hole so how does it float to follow the contours ? What's the long grey bar from the headstock to the crown wheel area has it got any floating parts that are adjustable
54b09415-e092-400e-ba3e-bd5df3cad753.jpeg
This is slightly off the ground and as it should be, lifting fairly level. The float is facilitated by the long tubes, front grey and inner part silver in the photo, that telescoped in and out. It is fully extended in the picture. I think there are two of them, the far one being hidden in the picture. There may be a conical washer on the bottom pivot centre of headstock that should be adjusted to stop the rake ‘walking’ in work, which is not much of an issue with single rotor rakes generally.
 

Cowabunga

Member
Location
Ceredigion,Wales
There's a couple of pins in the telescopic struts that go to the back of the machine that you take out, when in work.

When I saw the OP, I wondered if he was using it in transport mode :scratchhead:
Those pins, fitted to the long telescoping tubes I mentioned above, stop it swinging sideways when a sharp turn is made in transport and are an absolute basic control. While it is possible that this is indeed the issue, I despair if so. Not everyone has a mechanical ‘eye’ of course and most people do not RTFM these days, hence all the issues and inability to get the best out of equipment and prime movers alike.
 

balerman

Member
Location
N Devon
When the rake is level at work the top link wants to be slack but only by a little bit. But as soon as you start to lift the rake the top link wants to become tight. Bottom hole on tractor for top link, top hole on rake ( is the hole on the rake slotted).
Surely when in work the rotor should be level in both directions ,tractor linkage right down and held level to the ground by the top link (should be tight).Some tractors the geometry just won’t work to lift clear of the rows when turning.When you have it level adjust the wheel height so it is just clearing the crop.
 

snipe

Member
Location
west yorkshire
Surely when in work the rotor should be level in both directions ,tractor linkage right down and held level to the ground by the top link (should be tight).Some tractors the geometry just won’t work to lift clear of the rows when turning.When you have it level adjust the wheel height so it is just clearing the crop.
It’s up to you how you set it up. The original post said it was having a problem with the rake tipping back when lifting. Having all the weight pushing on the top link won’t help to solve the problem. Carrying the front of the rake on the lower arms a little will enable the top link to be shortened. The rake will still follow the contours of the ground to an extent, and run level.
 

kc6475

Member
Location
Notts
snipe,
This has just crossed my mind, we have only used the top link that the tractor was supplied with, and it works a treat on the 4 rotor Tedder.. I will check its adjusted fully in to start with, then try a shorter one👍
First thing we did when we got our Massey rake last year was to find a shorter top link than the standard rear tractor one. Fairly sure it's a front linkage top link we ended up using in the end.
 

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