OP
My F-1700 testing my patience
- Thread starter JC-jetro
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shannondurst
Bronze Member
Hello, looking for advise, I have ford 1700 it had no hydraulic psi when hydraulic fluid gets hot, troubleshoot, replaced pump and steel line o rings cleaned hydraulic filter 3 times with new fluid, now I have hydraulics, I have 2000 psi following relief valve adjustment in the manual and adjust control valve setting, now when tractor is running the hydraulics squeal bad and small steel line to pump vibrating and making noise, when I raise bucket It makes loud squeal and will not lift and jumps erratically, I disconnected the loader implement block from the tractor so its the tractor only and still same issue, i have removed the relief valve and inspected and the control valve and all seem ok, normal wear, and lift piston please any help with information will be great.
Last edited:
OP
JC-jetro
Elite Member
Sent you a pm. Did it help? please put the pressure gauge to see if you get a reading hat is jumping around. the only reason the small line ( it is pump discharged) is shaking is relief valve setting or is not seating well if you changed the orientation of the conical poppet valve. try to re-inspect that and reduce the spring pressure t see if it make any difference. notice the direction of the point poppet valve. That has to fit the seat . I set mine to about 1900 to 2000 psi and it take care of all my need. it is rated for 2300 psi.
JC,
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shannondurst
Bronze Member
I have removed the poppet a d checked several times it all looks ok, i lowered psi at relief valvr and still lots of noise coming from small line.
OP
JC-jetro
Elite Member
Ssmall line is on the discharge of the pump. Take the banjo off there and remove the relief valve guts or even the banjo connection at the relief. Cover the hole with a rag and use rubber band or something to steady it, 3rd hand would be useful. Then blow high pressure air to see if you had some foreign object in the high pressure line. Pump gear pieces, although highly unlikely might be there.
JC
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shannondurst
Bronze Member
yes sir i did that after i replaced the pump i actually zip tied a rubber glove over to see if i can find any debree and i found none.
Let me ask you a ? it looks like the control valve adjustment has been adjusted, some one has been in it looks like a crescent wrench had been used on the adjusting nuts for the popper valve, and the check valve has to stake marks on it, I took a pic of the adjustsment and tried to adjust and still same issue, there is only 1 adjustment that i can find on page 49 in hyd system to use .3mm between nut and plate, but dont know the actual spec from nut to housing for neutral postion, I have tried to move the control valve spool to find neutral on page 6 and adjust the fork joint and feedback link and its not working at all, am I way off on the wrong the path , I believe my issue is the control valve.
So far lines and filter screen are clean ,changed fluid 3 times has new orings at line banjos and new pump, I have the relief valve set to 1900 psi now and when i raise implement it struggles and kinda wants to jump up and small line squeals lous and makes t-t-t-t-t noise constantly unless I where to try to raise again, thanks again for any information and help you have for me.
Let me ask you a ? it looks like the control valve adjustment has been adjusted, some one has been in it looks like a crescent wrench had been used on the adjusting nuts for the popper valve, and the check valve has to stake marks on it, I took a pic of the adjustsment and tried to adjust and still same issue, there is only 1 adjustment that i can find on page 49 in hyd system to use .3mm between nut and plate, but dont know the actual spec from nut to housing for neutral postion, I have tried to move the control valve spool to find neutral on page 6 and adjust the fork joint and feedback link and its not working at all, am I way off on the wrong the path , I believe my issue is the control valve.
So far lines and filter screen are clean ,changed fluid 3 times has new orings at line banjos and new pump, I have the relief valve set to 1900 psi now and when i raise implement it struggles and kinda wants to jump up and small line squeals lous and makes t-t-t-t-t noise constantly unless I where to try to raise again, thanks again for any information and help you have for me.
shannondurst
Bronze Member
here is a few pic
Leejohn
Elite Member
I don't know anything about your tractor, but that spring does not look right. can you tell if you are getting a lot of air in the oil? If so start looking for air getting in on suction side.
shannondurst
Bronze Member
spring is not seated in the top holeof plate, i havent seen much airiation in the fluid i have checked bescuse i have had lines off several times now , thanks
OP
JC-jetro
Elite Member
I could not identify the second pic that you posted. Can you elaborate on that? or take a pic a bit zoomed out? I have never taken or needed to take off the spool valve as you have. Please look at the attached picture. That is the feed back arm that is attached to one of the lift arms that returns spool to neutral position at any given height of the 3 -point . Did you have it originally? did you adjust it ? is it put back together after spool removal?
JC
