1971 Ford 3000

Blew high pressure hydraulic line at the pump, replaced with new line/nut/fittings, worked for a day and blew again at the pump, replaced nut/fittings again, then blew again at the other end of the line at rearend. Any ideas tractor guys? Thanks Ray
 
Ray,
Welcome to the Ford board.
Those rubber compression nuts were not one
of Ford's better Ideas though I have never
seen one fail on a new line. They often do
on a used line.
I had a 3000 for a short time that someone
had threaded a fitting/adapter into the
pump that had a male flare fitting on it.
Then they flared the line. That made it
very easy to disconnect and reconnect that
line.
I never looked into what it would take to
find an adapter but if I ever run into
another one of those I will.
Take both the pump and line with you to a
good hydraulic specialty shop and see what
they can do for you.
If you go that route and are successful in
adapting it please post back and tell us
about it. If you could include part
numbers or nomenclature of the fitting too
that would be great.
Even years from now someone might search
this site for an answer to the same
problem and find your info to be very
helpful.
 

Thanks ULT for the reply, had this tractor for 30 years and no trouble like this. I do hear these have a couple filters on the hydraulics, don't know where but wonder if that's the problem. maybe plugged?

Also since I replaced the last nut/fitting on the pump and topped off the fluid that was lost (2 gallons) it raised shaky and slow before it blew at the bottom of line.
 
clogged filter shouldn't be the cause. The one on the return line has a bypass valve that will open if the pressure gets higher than a certain amount which should be way lower than the pressure that would blow out the line connections.
 
Check the parts diagram. Sometimes the washer is missing or on the wrong side of the rubber bushing. The chattering lift is probably air in the system and the hammering could be the cause of the blown fitting. My 2000 used to lift intermittently and chatter in cold weather. I went through the entire lift system, no change. Replaced the O-ring in the pump body and no change. I threw a rebuild kit in the pump and it's been great ever since. After the rebuild I ran a clear hose from the bleed port to the fill port. It looked clear of bubbles till I shut it off, and the line was all bubbles. I left it running like that about 20 minutes and it all cleared up.
 
BTW Mike, the way I see it the washer has to go in the hole first because the rubber bushing with the copper on each side fits in the hollow area of the nut, where the washer wouldn't.
 
Thanks Mike, couple more questions then I'm going to replace the lower one and try again, also going to drain and replace the fluid which I've never done since I owed it :), only use for plowing snow though. Also anyone ever changed filters on these? are they hard to get to?
 
There is a suction filter down in the
bottom of the rear end but it is not a
type that you would generally replace.
To do so would require removing the 3 pt
lift cover under the seat.
What I have done before is drain the rear
end then wrap duct tape around your blow
gun to get a good seal and blow it out.
If you leave the suction line connected at
the bottom and pour lacquer thinner in the
tube you can wash the filter out some then
blow it out again.
 
You have to pull the whole cover off to change the filters. One is a screen that can be cleaned. The other is paper, change it. When you lift the cover off take it straight up. There is vertical tube at the right front corner that is easily damaged. 3000 has the flow control valve so the tube is short. 2000 it runs from the cover to bottom where the pressure line from the pump goes in.
 
Those fittings will likely be a source of frustration until you either replace both fittings and the line, or eliminate the fittings and use something better. I did the latter.
I took the steel nut part of the compression nut, and welded it to a 1/2" flareless fitting. That's the abbreviated version, I did have to do some cutting on the fitting, and you need to keep an eye on the length of the fitting you end up with, but once I got it together it was a sigh of relief. If I have a chance I'll snap a picture of it. It could have been done prettier, but I was just trying to make something work out of the parts I already had.
 

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