autos & transportation, farm tractors

Massey ferguson tractors

I have a Massy Ferguson 265 1978 year model. The power steering pump oil seal has blown at least 7 times. I have replaced the entire power steering unit 3 times. All of the steering components once, to no avail. And the seal itself how ever many times are left to account for. Was there a Manufacture's recall or defect that anyone knowns of? If so what is the fix?

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Answers

Trampo Answered:

It sounds to me like you got over pressure from the pump. I ain't seen a Massey steering pump that went out yet so look at this stuff.

1. Look at the cutoff valve that should be in the steering box and another in the pump. If they get clogged, you will get over pressure real fast and it will blow seals bad.

2. Look at the lines. If you got too much pressure then you got too small a line. Gates makes high pressure hoses that just don't give up. You should have a half inch ID line. You might want to go to a one inch line and that will take some strain off the pump.

3. Some MF steering pumps are gear driven and some have either a V-belt or sepentine belt. If you have the belt drive optio you might want to have a machine shop cut you a new drive sheave or order one from WW Grainger. Make it an inch wider than the present unit. You will get a bit lower RPM at the pump and that will decrease your fluid delivery enough so you don't blow the system again.

Posted 2 years ago

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