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Massey Harris & Massey Ferguson Tractors Discussion Forum

M-F loader cylinder rebuild

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Jim S.

06-17-2004 08:29:51

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My cylinders on my old M-F front end loader are bypassing, and it's time for a rebuild. I just took them off and brought them to a guy, who ONLY THEN told me he charges $250 EACH to rebuild them. I thought that a bit steep.

How hard is this to do mysef? I am a proficient mechanic. The loader is an old one, I seem to recall it having a tag that says Model 30 or something like that.

All help appreciated, as I am down and so is my hay til this thing gets fixed.

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DP South Wales

06-19-2004 06:37:46

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Re: M-F loader cylinder rebuild in reply to Jim S., 06-17-2004 08:29:51

Hi Jim,
Sound advice from Thomas and Jim. Perhaps US loaders are different to UK ones. It's possible that there is a 'wire' holding the hub into the end of the cylinder. If you have a hole of about 1/4 to 5/16 on the outside of the tube you should be able to see the wire inside. If this is so, you will need to turn the hub until you can see the end of the wire. Hook the wire through the hole and unwind it until it's clear. In all probability it will be a circlip. You should not have any problem indentifying the seal with a good hydraulic supplier. You will probably have firms who can make the seals for you....but watch the price. Anchor the cylinder end to the tractor and you should not have too much trouble in stripping it. (Don't squeeze it)
Cheers
DP South Wales

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Thomas

06-17-2004 10:21:01

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Re: M-F loader cylinder rebuild in reply to Jim S., 06-17-2004 08:29:51

I don't know this particular loader, I think US market fit their own loaders as opposed to European built, but rams in general are not particularly dificult to do. I assume that when you say bypassing that they are double acting rams. If it's the type of ram I think it is you remove the external circlip at the top, tap the cap into the cylinder and remove the internal circlip. Then pull the ram apart. Fit new seals the correct way round, with back up rings if fitted. Soak the seals in hot water before fitting, this makes them soft, particularly the gland seal in the cap. Lubricate seals before reassembly, obviously check bore for scoring etc. Single acting rams have no piston, usually just a snap ring round the rod. Sometimes the cap's are so badly siezed on these that all you can do is cut the ram tube near teh bottom, remove the snap ring and withdraw the piston, and then weld the tube up on reassembly. I would have thought you could buy new rams and have change for that sort of money?

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Jim S.

06-17-2004 11:23:04

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Re: Re: M-F loader cylinder rebuild in reply to Thomas, 06-17-2004 10:21:01

Thanks Thomas, I appreciate your reply. I will have to check it out. Never have done any myself, but I figured there couldn't be much to them. They are double-acting. The top is welded, so I will look at the ram side to see if there is a clip or way to get it apart there. I know certain cylinders screw together in places where you would not even figure they did that, so I hope that's not the case here.

My parts guy is going to see if kits are still available. They still work, they just bypass leak so after the oil heats up the loader won't raise. I have already swapped the valves, so I know it's not the valve. The front set works fine. Plus the outer seals leak, but they are not stuck or anything.

I told HIM that I could get new ones for that price. He said he doubted it. I said, "Have you ever looked at a Northern Tool and Hydraulics catalog?"

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