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Hydraulic Pump Revisited

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Sean (TX)

10-05-2007 15:52:50

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Starting a new thread my thread got hijacked yesterday. Im wonder if the relief valve should have what looks like a spot of JB weld on it.

Here are the pics of a clean pump. Im going to spend some time scrubbing the belly out. Be my last cleaning of the belly. The next guy can do it 66 years from now third party image

I have heard the aluminum pumps are a rare find? Cant find a date code just 9N605 with a circled 3 under it.

Sean(TX)

9N79052

third party image

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Sean (TX)

10-06-2007 11:14:16

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Re: Hydraulic Pump Revisited in reply to Sean (TX), 10-05-2007 15:52:50

Just ordered the parts from this site....Let the waiting for parts game begin... 7-9 days UPS Ground...

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Sean (TX)

10-06-2007 08:48:08

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Re: Hydraulic Pump Revisited in reply to Dunk, 10-05-2007 15:52:50

Pretty to clean out the rear grease pit as I call it. It was full to the top with sludge. Notice the drain hole in the front wall. Big hole in the back is how the diffy gets its oil. Should hold the required 5 gallons of GL1 now. Have 10 gallons of Diesel and GL1 to take to Napa and dispose off.

third party image

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GB in MT.

10-06-2007 09:00:58

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Re: Hydraulic Pump Revisited in reply to Sean (TX), 10-06-2007 08:48:08

Sean; I now have 24 pix, in your split file on my doc.s, just in case I ever have to do this type of split, and in case you should need them, They are in my files.

Gary

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Joe T (CO)

10-06-2007 07:23:44

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Re: Hydraulic Pump Revisited in reply to Sean (TX), 10-05-2007 15:52:50

Here is my old valve vs the new valve....

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Sean (TX)

10-05-2007 18:01:49

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Re: Hydraulic Pump Revisited in reply to TennesseeMan, 10-05-2007 15:52:50

Tom N MS said: (quoted from post at 20:32:47 10/05/07) You said that yours had one like that until you rebuilt the pump. I have installed three new ones in different tractors lately and all the replacements are like that. What does your replacement look like and is the replacement you used better? Available where? Thanks

I have never rebuilt the pump. I have the 9N split in 3 right now(tranny overhual). Dropped the pump to clean the belly. Way to much sludge for my eyes to look at. Sounds like you need to clean the belly.Sp;it between the tranny and center housing is a walk in the park. Makes it easy to get every nook and cranny and give the belly a good cleaning.

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Hobo,NC

10-05-2007 16:16:29

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Re: Hydraulic Pump Revisited in reply to Sean (TX), 10-05-2007 15:52:50

I was gonna tell ya what that wus but got off track, if you ever feel the need to take a look in the relief valve run the soldier up again a wire wheel and it will burn it off.

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Tom N MS

10-05-2007 17:50:22

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Re: Hydraulic Pump Revisited in reply to Hobo,NC, 10-05-2007 16:16:29

I have a new one I took apart because it was leaking. Worker right for about 4 months then got grit in it. How can I know how to reset the pressure right? Thanks

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Hobo,NC

10-05-2007 18:43:01

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Re: Hydraulic Pump Revisited in reply to Tom N MS, 10-05-2007 17:50:22

Pressure gauge on the Git this "TEST PORT"
That's the only way I know that would B factory recommended., How I would go about it i soon as not tell other than to say educated guess.

One of these days when I take the time i spec it could B tested out of the pump. Rite now I take'em apart leave'em on the table and walk away and install a new'n.

If you checked how many turns are the thread count when you took it apart i would start their, install and if all seamed OK run it.

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Sean (TX)

10-05-2007 16:09:24

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Re: Hydraulic Pump Revisited in reply to Russ SoCal, 10-05-2007 15:52:50

Thanks for clearing that up Joe and Dave third party image

Got the parts in the mail today John third party image

Im going to give the belly a good cleaning this weekend...Should have the bearings and seals to put it back together next weekend..

Sean

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John Smith8N

10-05-2007 16:01:20

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Re: Hydraulic Pump Revisited in reply to Sean (TX), 10-05-2007 15:52:50

That's a spot of solder put on there when they initially made the valve and set it for 1650 psi. They do that so you can't change the adjustment on the relief valve spring. Nearly all pumps are aluminum.

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Joe T (CO)

10-05-2007 16:00:23

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Re: Hydraulic Pump Revisited in reply to Sean (TX), 10-05-2007 15:52:50

Hi Sean,

I see the spot on the valve you are talking about now. It is made that way, they set the pressure release spec by turning that outside piece and then solder it in place. My 42 had one like that until I rebuilt the pump.

You did a great job on cleaning it up. I had forgotten you said it held implements up real well.

Good luck, Joe

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Tom N MS

10-05-2007 17:32:47

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Re: Hydraulic Pump Revisited in reply to Joe T (CO), 10-05-2007 16:00:23

You said that yours had one like that until you rebuilt the pump. I have installed three new ones in different tractors lately and all the replacements are like that. What does your replacement look like and is the replacement you used better? Available where? Thanks

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Joe T (CO)

10-05-2007 18:30:44

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Re: Hydraulic Pump Revisited in reply to Tom N MS, 10-05-2007 17:32:47

"You said that yours had one like that until you rebuilt the pump."

Tome
My new one looks more like a hex head.

I was told it will work, I hope so. I have not had time to finish up my tractor. Hope to start on it soon.

Joe

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Tom N MS

10-05-2007 18:57:48

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Re: Hydraulic Pump Revisited in reply to Joe T (CO), 10-05-2007 18:30:44

Now that you described it, I recall seeing them like that. Undoubtably it will work.

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