MF34 Loader Control valve hose removal procedure

Jaypat88

Member
What tool is needed to remove the 1/2" pipe plug on the loader control valve as indicated "1" in picture. Also, what is the purpose of the procedure if the hose is removed from the loader control valve, then that port is to be plugged, remove the 1/2" pipe plug, then reinstall the 1/2" pipe plug?
mvphoto47078.jpg
 
(quoted from post at 15:51:27 12/27/19) What tool is needed to remove the 1/2" pipe plug on the loader control valve as indicated "1" in picture. Also, what is the purpose of the procedure if the hose is removed from the loader control valve, then that port is to be plugged, remove the 1/2" pipe plug, then reinstall the 1/2" pipe plug?
mvphoto47078.jpg

The photo isn't clear enough for me to tell beyond it looks like maybe a recessed hex head, which could require a hex key (Allen wrench) or bit. What does the head on the plug in your valve look like? what

Step b reads to me as you remove plug 1 and behind it is a 1/2" pipe plug. You remove the 1 /2" pipe plug then reinstall plug 1. I am thinking the 1/2" pipe plug is tied to having power beyond to operate the additional valve you have, but that just a guess. Your manual should be explaining the reason for doing this, I don't have a manual to see the related info.

The pressure line from the hydraulic pump connects to your loader valve now, correct?
 
Remove the hose to backhoe or whatever other implement it feeds. Plug that port. Remove plug 1, which IIRC is bigger than 1/2". Behind it is a 1/2" pipe plug requiring an allen key. Remove that
plug, replace plug #1. You're good to go.
 
(quoted from post at 15:47:43 12/28/19) Remove the hose to backhoe or whatever other implement it feeds. Plug that port. Remove plug 1, which IIRC is bigger than 1/2". Behind it is a 1/2" pipe plug requiring an allen key. Remove that
plug, replace plug #1. You're good to go.

I needed to remove a hose on that port that was connected to a cylinder on my 3 point hitch. I was attaching a backhoe pressure line, so I simply installed the backhoe pressure line to that port and now the backhoe works.

I was not sure if that hose removal procedure is only when you are not wanting to use that port anymore or for if that was the procedure every time you remove that hose for purging air or something?
 
(quoted from post at 17:56:00 12/29/19)
(quoted from post at 15:47:43 12/28/19) Remove the hose to backhoe or whatever other implement it feeds. Plug that port. Remove plug 1, which IIRC is bigger than 1/2". Behind it is a 1/2" pipe plug requiring an allen key. Remove that
plug, replace plug #1. You're good to go.

I needed to remove a hose on that port that was connected to a cylinder on my 3 point hitch. I was attaching a backhoe pressure line, so I simply installed the backhoe pressure line to that port and now the backhoe works.

I was not sure if that hose removal procedure is only when you are not wanting to use that port anymore or for if that was the procedure every time you remove that hose for purging air or something?

That procedure would be if you wanted to eliminate the hose to your 3 point cylinder, or now your backhoe. If you plug the port the pressure hose is currently in the oil can't return to the reservoir via the extra valve's return hose, or now the return from your backhoe. Removing the internal plug in step b opens the port in the loader valve up to allow return oil to go to the reservoir. That is required if you use just the loader valve, nothing beyond it.
 

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