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Vane type Hydraulic Pump Kit for Ford NAA

S

SteveD55

New User
I am still looking for anyone who has tried the Vane type Hydraulic Pump Kit for Ford NAA that I have coming from Yesterday's Tractor. Any problems with changing it? Did it work good? I had previously posted the following under Ford instead of 8N,9N,2N:

"I have done the testing to confirm that the pump is too wore out to produce enough pressure and just ordered the 5/8 Thick Vane Type Hydraulic Pump Kit from Yesterday's Tractor. Does anyone have experience with this kit? I see it comes with the body/rotor/vanes along with 2 O-rings. I am not sure how much I will need to take apart when I receive the kit and am wondering if I might be needing the seal and any gaskets that show up on the exploded parts view I found online. The pump does not leak now. I can still do some snow plowing (blade on front with cable going back to hydraulic arms) and do not want to take the pump apart until the kit arrives. I can plow for 15-20 minutes at a time before it stops lifting the bade. Any advice regarding installing the kit would be appreciated."

Thank you,
Steve
 
(quoted from post at 06:45:39 02/27/19) I am still looking for anyone who has tried the Vane type Hydraulic Pump Kit for Ford NAA that I have coming from Yesterday's Tractor. Any problems with changing it? Did it work good? I had previously posted the following under Ford instead of 8N,9N,2N:

"I have done the testing to confirm that the pump is too wore out to produce enough pressure and just ordered the 5/8 Thick Vane Type Hydraulic Pump Kit from Yesterday's Tractor. Does anyone have experience with this kit? I see it comes with the body/rotor/vanes along with 2 O-rings. I am not sure how much I will need to take apart when I receive the kit and am wondering if I might be needing the seal and any gaskets that show up on the exploded parts view I found online. The pump does not leak now. I can still do some snow plowing (blade on front with cable going back to hydraulic arms) and do not want to take the pump apart until the kit arrives. I can plow for 15-20 minutes at a time before it stops lifting the bade. Any advice regarding installing the kit would be appreciated."

Thank you,
Steve
Click to expand...

I posted a description with pictures on NTC. I forgot to mention that the pumps are reversible and the rotor housing is marked with an arrow showing direction of rotation. Make a note of the position on the old housing before you disassemble the pump and make sure you put the new one in the same way or you will reverse the pump.

TOH
 
Thanks TOH, I saw your post and replied a little earlier this morning. I am just trying to hear from someone who has bought and installed one
of these kits to see how it worked for them. I appreciate your input and it is very helpful.
 
(quoted from post at 13:11:36 02/27/19) A new vane section is not going to much good if front and rear covers are scored up.
Click to expand...

Like this? One has to wonder if the loss of pressure in these pumps comes from wear on the vanes/housing or the end plates. Hopefully Steve will take a couple pictures so we can evaluate the wear on his and how well his replacement parts resolve his problem. I suspect this end plate could be resurfaced if the gouges are not too deep but it's a precision surface so not something you are going to do with a hand held tool.

TOH

wear.jpg
 
I will take pictures and let you know how it turns out. You would think somebody has already tried one of these and could let us know how it
worked out. If I knew who manufactures these kits I could try getting more information from them.
 
I am going to wait until the kit gets here to take it apart. We just got more snow and I need to do some plowing today. I sure hope this kit works for me. I need the tractor for plowing and working up more fertile ground for my garden when the weather gets right.
 
(quoted from post at 10:54:31 02/28/19) I will take pictures and let you know how it turns out. You would think somebody has already tried one of these and could let us know how it
worked out. If I knew who manufactures these kits I could try getting more information from them.
Click to expand...

These parts are just recently on the market so you have the honor of being an early adopter ;-)

TOH
 
(quoted from post at 15:22:26 02/28/19) When you say they could be resurfaced do you mean just milling them?
Click to expand...

Possibly for the rough cut but you need a pretty good surface finish so preferably ground as a final step.The gouges in my picture are pretty deep so either would be an improvement. If I was going to attack it I'd try chucking it up on the lathe and face it for the rough cut and then finish with a tool post grinder. The plate is held against the rotor with that little wire spring so you may not be able to remove much material.

TOH
 
Here are some pictures so far, the old side side plates look good and a little polishing should do the trick. The old vane assy has obvious issues. The new vane assy looks great. Working on gaskets now.
cvphoto16076.jpg


cvphoto16077.jpg


cvphoto16078.jpg


cvphoto16079.jpg


cvphoto16080.jpg
 
(quoted from post at 16:55:48 03/11/19) Here are some pictures so far, the old side side plates look good and a little polishing should do the trick. The old vane assy has obvious issues. The new vane assy looks great. Working on gaskets now.
Click to expand...

Good luck and keep us posted on the result.

TOH
 
It appears that we were successful. During troubleshooting, while the arm was chained to the axle we got 1200psi which quickly dropped down
below 1000psi. After the rebuild and install, we are getting 1900psi on a 5000psi uncalibated gauge, so it could be off a few percent.
Decided not to keep it under pressure for any length of time and dropped the arms, didn't want to risk damaging something. If anyone else is
planning to do this, you will need 1/8" thick rubber impregnated cork gasket material. The gaskets are not available so you need to make your
own. There are metal rings that stop you from compressing the gaskets too much so you need the right thickness gasket. The gasket to mount to
the crankcase is still available, it was less than $7 from our local dealer.
 
(quoted from post at 12:42:46 03/18/19) It appears that we were successful. During troubleshooting, while the arm was chained to the axle we got 1200psi which quickly dropped down
below 1000psi. After the rebuild and install, we are getting 1900psi on a 5000psi uncalibated gauge, so it could be off a few percent.
Decided not to keep it under pressure for any length of time and dropped the arms, didn't want to risk damaging something. If anyone else is
planning to do this, you will need 1/8" thick rubber impregnated cork gasket material. The gaskets are not available so you need to make your
own. There are metal rings that stop you from compressing the gaskets too much so you need the right thickness gasket. The gasket to mount to
the crankcase is still available, it was less than $7 from our local dealer.
Click to expand...

Good to know.

TOH
 
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