MF 33 Grain Drill Disc Removal

Axtell

Member
Location
RDU, NC
Does anyone have any tips on how to remove/replace the disc openers on the MF33 Single Disc Grain Drill. Looks to be a 5/8 shaft and 5 rivets that attach the hub to the disc. I found a PDF of the owners manual and it does not mention how. Not having much luck searching. Thanks.
 
Does anyone have any tips on how to remove/replace the disc openers on the MF33 Single Disc Grain Drill. Looks to be a 5/8 shaft and 5 rivets that attach the hub to the disc. I found a PDF of the owners manual and it does not mention how. Not having much luck searching. Thanks.
I bet its like any drill disk. You grind the rivets off then either rivet or bolt the new one on.
 
If MF grain drill disks are anyway close to JD drill disk there's a bolt in the center of the disk brg that retains disk to grain boot.
 

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Pop that cap off in the center and there will be a bolt or nut depending on which they used some can be left hand thread. Don't know if those are or not. Look at the threads for that. Or if it does not come loose try the other way. They should be tight but not immovable tight.
 
Pop that cap off in the center and there will be a bolt or nut depending on which they used some can be left hand thread. Don't know if those are or not. Look at the threads for that. Or if it does not come loose try the other way. They should be tight but not immovable tight.
Usually the left bolt will have left hand threads and the right bolt right hand threads.
 
If it's a double disc, there's a cap like has been said. If it's single, there's a nut on the back side. Should have a slot in the end to put a big screwdriver in to keep the bolt from turning.
 
Picture clearly shows no slot. You got one shot to get the nut off without a fight. If you want the best shot at it, heat the nut cherry red with your oxy-acetylene torch, and use an impact wrench to spin it off quickly. Then you can take the disc to the bench and work on the rivets in relative comfort.

If the nut doesn't come loose and spins in the bracket, then you have to grind off the rivets to get at the other side of the axle to hold it.
 
Picture clearly shows no slot. You got one shot to get the nut off without a fight. If you want the best shot at it, heat the nut cherry red with your oxy-acetylene torch, and use an impact wrench to spin it off quickly. Then you can take the disc to the bench and work on the rivets in relative comfort.

If the nut doesn't come loose and spins in the bracket, then you have to grind off the rivets to get at the other side of the axle to hold it.
I'm with you on using an impact wrench if you have one. I still can't get pictures blown up big enough on this format to see them clearly.
 
Pictures that you upload or pictures that others put on here?
Any. On some occasions, other people's pictures show up like they used to, but most of the time there's a black border. OK, I know to click on them and then click the other little box to blow them up a little bigger, but they're still in a black box and too small to see detail. A few times, I've bumped something and they show up full screen, but I have no idea how I did it or how to do it again. I despise this new format.
 
Any. On some occasions, other people's pictures show up like they used to, but most of the time there's a black border. OK, I know to click on them and then click the other little box to blow them up a little bigger, but they're still in a black box and too small to see detail. A few times, I've bumped something and they show up full screen, but I have no idea how I did it or how to do it again. I despise this new format.
For me, with the picture above in this thread, I click on the picture and it gets larger. My cursor hovering over the picture then is a plus sign, and if I click anywhere on the picture again it blows up very large. Much larger than the monitor on my computer. There is also a bar at the top of the picture with several symbols and one of those is a full screen symbol. Clicking that symbol makes the picture the same size as my monitor.

Other pictures sometimes will not enlarge with the second click like this one does. I presume this is because the uploader has made the picture smaller prior to upload.

You mention clicking another little box. Try to click anywhere in the picture instead of in a box. What happens?
 
For me, with the picture above in this thread, I click on the picture and it gets larger. My cursor hovering over the picture then is a plus sign, and if I click anywhere on the picture again it blows up very large. Much larger than the monitor on my computer. There is also a bar at the top of the picture with several symbols and one of those is a full screen symbol. Clicking that symbol makes the picture the same size as my monitor.

Other pictures sometimes will not enlarge with the second click like this one does. I presume this is because the uploader has made the picture smaller prior to upload.

You mention clicking another little box. Try to click anywhere in the picture instead of in a box. What happens?
OK, ya, that blew it up over sized. I can hold down with one finger and move it to see close up detail. I don't know what I just did to the text though. Does it look like the letters are slanted? I hit control instead of shift and it did this.
 
OK, ya, that blew it up over sized. I can hold down with one finger and move it to see close up detail. I don't know what I just did to the text though. Does it look like the letters are slanted? I hit control instead of shift and it did this.
Are you working with a mobile device like a tablet or a phone or a computer? If a computer, does it have a touch screen monitor? If you have a touch screen computer, are you using the touch screen or a traditional keyboard/mouse to type your replies?

The text changes are because you turned italics on. When you click "reply" to quote and reply to a comment, up in the left top corner is a large "B" and a large slightly slanted "I". Clicking the B makes the text bold. Clicking the I turns italics on. Clicking them a second time turns that back off.

There are also a bunch of keyboard shortcuts that also turn things like that on and off without having to press the B or the I. Pressing Ctrl (control) plus the I key at the same time turns italics on and off. My guess is this is what you did by accident.
 
Are you working with a mobile device like a tablet or a phone or a computer? If a computer, does it have a touch screen monitor? If you have a touch screen computer, are you using the touch screen or a traditional keyboard/mouse to type your replies?

The text changes are because you turned italics on. When you click "reply" to quote and reply to a comment, up in the left top corner is a large "B" and a large slightly slanted "I". Clicking the B makes the text bold. Clicking the I turns italics on. Clicking them a second time turns that back off.

There are also a bunch of keyboard shortcuts that also turn things like that on and off without having to press the B or the I. Pressing Ctrl (control) plus the I key at the same time turns italics on and off. My guess is this is what you did by accident.
Acer Chromebook with a keyboard. Now it's not doing it. I was off the site for a few minutes, must have gone back to default.
 
Acer Chromebook with a keyboard. Now it's not doing it. I was off the site for a few minutes, must have gone back to default.
Yes, as soon as you send the reply and move on to the next thing it turns it back off. Just a case of fat finger disease...

https://support.microsoft.com/en-us...61a57-8ff0-cffe-9796-cb9706c75eec#textediting
Here's a list of the keyboard shortcuts for editing text if you are interested. Click the down arrow by "Text editing shortcuts" if it doesn't automatically open for you.
 

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