1963 4000 hydraulics

[chris in tx]

ok.. update. The hydraulics work if I hang off the back of the post hole digger boom. When there is no weight on the end of the digger, the hydraulics wont lift the implement high enough to put the auger on. We bled the fluid using the bleeder screw on the pump and some air did come out, but this didnt help the problem. He(my friend) thinks that there is a seal on the piston or rod that works the arms. this bad seal allows fluid to blow by when not much weight is on the hydraulics, but with weight added, somehow the seal has backpressure and functions... has anyone had this problem? Also, I am still waiting on manuals to come in. Is there a filter anywhere in the hydraulic system? if so, where? and finally, there are three separate chambes with three separate fill bolts, do all of these require hydraulic fluid? Is there any that require gear oil? the reason that i ask is because we pulled the top fill plug on the rear differintial and is looks dry... but when you check the dipstick, it shows to be over full... since I dont have my manual yet, I was hoping for some help. Thank You.

 

[twopop]

I had the same type problem on a 971 ford where it would not lift until back pressure was put on lift.the check springs in the hydraulic pump were broken,had to rebuild pump

 

[chris in tx]

thank you... I will order the rebuild kit today!

 

[NWMO 901 SOS]

(quoted from post at 10:24:47 09/01/08) ok.. update. The hydraulics work if I hang off the back of the post hole digger boom. When there is no weight on the end of the digger, the hydraulics wont lift the implement high enough to put the auger on. We bled the fluid using the bleeder screw on the pump and some air did come out, but this didnt help the problem. He(my friend) thinks that there is a seal on the piston or rod that works the arms. this bad seal allows fluid to blow by when not much weight is on the hydraulics, but with weight added, somehow the seal has backpressure and functions... has anyone had this problem? Also, I am still waiting on manuals to come in. Is there a filter anywhere in the hydraulic system? if so, where? and finally, there are three separate chambes with three separate fill bolts, do all of these require hydraulic fluid? Is there any that require gear oil? the reason that i ask is because we pulled the top fill plug on the rear differintial and is looks dry... but when you check the dipstick, it shows to be over full... since I dont have my manual yet, I was hoping for some help. Thank You.

Chris,

I quick search on this subject may explain it better, but there are three separate sumps on your tractor, tranny, hydraulics, diffy. There are seals around the shaft that travels through all three sumps. When the seals wear out, they allow fluid to tranfer from one sump to another. For that reason, some folks like to run Ford 134 in all compartments.

It has been heavily debated here, and really comes down to your preference. I still run 80-90w in my rear differential and 134 in my hydraulics/SOS tranny.

The dipstick is in the middle sump and corresponds to your hydraulic fluid. The differential sump has a plug that you fill to. If it looks dry, it may be, fill from the large bolt in the top rear until you have fluid coming out of your level check bolt. I believe it is on the left side, read of differential. Like I stated, a search of this subject may explain it better.

Chris

 

[chris in tx]

Thanks! That is what my gut instinct was. my buddy told me that all three ran together, so i guess my shaft seals are all ok. The dryness may explain the grind in reverse that happeens just after i put the clutch in to switch to a forward gear, and then again, it may just be an adjustment issue. thanks again for your help.