ford 1300 hydraulic problem

[01hunter570]

bove the pump and primed the pump and it worked until i drove the tractor for a while and it lost prime again apparentlyoes anyone know if there is a check valve in the suction line to keep it from draining back and if so where it is located. any help is appreciated.

 

[JC-jetro]

bove the pump and primed the pump and it worked until i drove the tractor for a while and it lost prime again apparentlyoes anyone know if there is a check valve in the suction line to keep it from draining back and if so where it is located. any help is appreciated.

There is no check valve to keep the pump primed. Pump suction inlet is lower than oil level in the diffy so once primed the inlet pipe stays flooded. Your issue might be dirty inlet screen that is in diffy housing.

JC,


http://www.tractorbynet.com/forums/...ng/90819-my-f-1700-testing-my.html?highlight=

 

[01hunter570]

thanks for your quick reply jc-jetro. that was one of the other things that i thought , so there is a screen on the inlet tube then! i let it set for 3 or 4 hours now the bucket and hoe work fine. another thing i was thinking is every time i drive it at road speed for 1/2 mile or so it does this. i am wondering if the oil gets churned up with air bubbles in it and thats why it doesn't work . i have to check to see if it is overfull at all the guy before me changed the hydraulic oil and overfilled it i drained a gal. out of it when i first got it but it could be a tad overfull yet i know it's not low. either that or the screen you talked about sucks up something against it and then it falls off afterit sets a while. what are your thoughts?

 

[JC-jetro]

thanks for your quick reply jc-jetro. that was one of the other things that i thought , so there is a screen on the inlet tube then! i let it set for 3 or 4 hours now the bucket and hoe work fine. another thing i was thinking is every time i drive it at road speed for 1/2 mile or so it does this. i am wondering if the oil gets churned up with air bubbles in it and thats why it doesn't work . i have to check to see if it is overfull at all the guy before me changed the hydraulic oil and overfilled it i drained a gal. out of it when i first got it but it could be a tad overfull yet i know it's not low. either that or the screen you talked about sucks up something against it and then it falls off afterit sets a while. what are your thoughts?

No problem did you open up the link that I had on my reply? that opens up an old thread with a lot of solid information that could give you some general clue. diffy is the oil reservoir and oil slows up when it comes back to reservoir. crud tend to settle to the bottom and the intake si about 3/4 to 1" off the floor so some crud build up is okay. The screen is really fine so it pick up all the stuff pretty good. The first culprit is suction obstruction. Overfilling the tranny has more negative effect on shaft seals and such rather than causing foaming and problem associated with pump cavitation. I wondered if the guy changed the oil without cleaning the diaper. That 's like changing the diaper on a kid without cleaning the bottom, not a good combination. If the oil is new, then you can drain and collect in a clean bucket to be used later. I'd skill run it thru a fine mesh strainer. You need to check condition of screen. You don;t need to change the screen as they are Stainless and very good quality. some diesel, a container and a tooth brush is all you need to clean the screen perfectly. If your piping has a leak on suction side can suck in air causing cavitation. Your pump might be getting a bit tired and if so you equally have issue with the loader. I concentrate on screen and that does not cost you anything but some time. Hyd pump can be overhauled relatively easy but you hope for that to be your last option. Do read the link I have above.

JC,

 

[01hunter570]

thanks again jc- jetro. haven't had much time to work on it as wife has to be taken to doctors often lately but hope to get at it soon. by any chance can you tell me do i have to take the top plate off the diff to get at the diaper on the bottom of the suction tube or is there some other way to get at it, by the way there is a brand new hyd. filter in it that i installed lately and i checked today and i had drained the hyd oil down to the proper level. will let you know of my progress as it takes place.also i did read the link you provided.somewhere i read where someone checked the hydraulics on the new holland link for a 1300 tractor and said they could'nt find a screen on the bottom of the suction tube. it doesn't seem likely to me that it wouldn't have one though to keep metal shavings or dirt out of the hyd pump.

 

[JC-jetro]

thanks again jc- jetro. haven't had much time to work on it as wife has to be taken to doctors often lately but hope to get at it soon. by any chance can you tell me do i have to take the top plate off the diff to get at the diaper on the bottom of the suction tube or is there some other way to get at it, by the way there is a brand new hyd. filter in it that i installed lately and i checked today and i had drained the hyd oil down to the proper level. will let you know of my progress as it takes place.also i did read the link you provided.somewhere i read where someone checked the hydraulics on the new holland link for a 1300 tractor and said they could'nt find a screen on the bottom of the suction tube. it doesn't seem likely to me that it wouldn't have one though to keep metal shavings or dirt out of the hyd pump.

Hope your wife feels better soon. I'll double check to verify if you indeed have screen. What i depicted is for 1700. although, when you get to higher model such as 1710,1720, 1310 then as part of improvement they take out the screen and put spin in cartridge. You do not need to take diffy cover off as has nothing to do with strainer if you have. lift system is right under seat on diffy housing. Don't at all need to go there.

will check and post details later on.

JC,

 

[JC-jetro]

Hunter570,

I went to NH website and checked 1300 hyd system out. You do not have a screen in the diffy housing.. Look at the attached PDF file. Your filter housing is right on the hyd pump. You do not have spin in type so you have to buy right filter media and open up the filter housing remove the old filter and replace the new one. Went back and looked at your post. look at #15 in the attached file. is that the filter you changed? I still think there is potential for crud to build up in the diffy. suction tube from diffy to pump can be also removed to check obstruction if any.

post back after viewing the attached pdf and let's make sure we're talking right filter. NH website is a great place to get detailed diagrams of tractor component if you do not have shop manual.

JC,

 

[DaButcher]

Filter appears to be the same as on my 1500, if so it is a metal mesh filter and cleanable.

 

[JC-jetro]

Filter appears to be the same as on my 1500, if so it is a metal mesh filter and cleanable.

You might look at the attachment I have below. Like 1300 you do not have a screen in the diffy housing. #17 is your filter housing on hyd pump and # 14 is your filter media.


Are you saying the filter media #14 is a cleanable screen? if so 1300 will be similar to it. Original poster indicated that he changed a hyd filter so we need to verify what filter he has changed.


JC,

 

[01hunter570]

yes that is the filter i changed. it had a new one in it replaced last year but when i took it out to check it the other day the rubber gasket on the back side of the filter didn"t look real good so i put a brand new one in. i started it back up last night after it sit all afternoon and the hyd worked strong i took it down in the field and cleaned a little ditch with the backhoe and it worked strong. called the guy i was doing the job for yesterday told him i would drive up at a slower speed and see if it would work then. drove at little better than walking speed and when i arrived backhoe and fel worked fine. every time i drive any distance i have this problem, this is the third time but it is the only time i have it. this is a standard transmission 4spd with 3spd auxillary do you think the gears churning in the oil could aerate it and make it hard to pump. also where the i think they call it a banjo fitting bolts to the diff under the seat is there a pickup pipe on the inside of the diff as it bolts fast to the diff very high up toward the seat, appreciate your help jc-jetro and also your input dabutcher. these are a super little tractor when they,re working right.