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Hydraulic filter and base

M

MARK ROBKE

Well-known Member
I am looking for a bypass hydraulic filter and base. I have tried NAPA and we found a base #4770, and it had 14 filters listed to fit, BUT, they all turned out to be fuel filters. I did look online and found other set ups, but would like to stay with NAPA, if I could. I believe I need a micron rating of 10, but mostly want to find a filter and base designed for hydraulic oil. Thanks, Mark.
 
I use a generic screw on in a bypass situation going to an oil cooler. It's a good size filter. I'll check Monday to see what it's NAPA number is on it.
 
When you say ''bypass'' I'm assuming you mean the filter base allows oil to flow past the filter if the filter plugs. There are all kinds of bases made to suit that need. There are also spin-on filters with built-in bypass. If you know what you want for a mount, what your connections should be, and what your max flow rate is, email me and I'll help find what you need. I did this for my home-made FEL last year and I can backtrack to find the info for you. I'm assuming you want NAPA because you have a store nearby. Most filters I find will cross to a NAPA parts number. You might have to buy the base online. steve
 
Mark, here's 5 minutes of search:
cvphoto150914.png

The Parker filter crosses to Napa 1759MP

Tell me your specifics and I'll look it up for you. The small print says this one is 10 micron, 20 GPM, 3/4 NPT in and out, and the bypass is set at 15 PSI. $40+ price on eBay, but if you shop for the base first, you can find one under $15, and then go to NAPA for the filter. Steve
 
Mark if you are anywhere close to Dover Tn I have a salvage yard with probably 50+ hydraulic filters of any input or flow you want. Free for the taking if you are around. E-mail is open if you need directions
 
Since you didn't say anything about flow volume, or pressure, and type of oil, and service intervals,along with operating pressure it leaves a lot guess at. Now if you look at Baldwin's filter bases they have some options. With not much for details it left a lot to guess at.
 
Yeah, I guess a few more details would help. I 'think' the flow is 3 gal per minute, but am unsure of the pressure, but think since it is in return circuit it would be low, but I don't know how low. I know I need a little more research too. Mark.
 
What is the application? You may want about 2-1/2 times because oil return will be more than pump flow. E mail me and I will explain it. J.
 
NAPA has called me back and found a filter that will fit the base they have, #4770, filter #7103. It is 16 micron, but don't know the flow rate. What I am doing is adding aftermarket power steering to my 300 utility, and need a filter. Thanks, Mark.
 
Mark, are you adding a PS pump also, or tapping into the tractor hydraulics? If you are adding a pump, and it's a closed system, you probably are OK without a filter. How many automotive power steering systems have a filter? Just a pump and reservoir, an orbital valve, and an actuating cylinder. Probably a screen on the suction side of the reservoir, before the pump. Most of those systems run a max of 1000psi, and a max of about 4 GPM. That probably equates to a filter head with 3/8 or 1/2 NPT inlet and outlet, with, or without a bypass in the head, or in the filter. I'm working on a Massey Ferguson 245 full hydraulic steering right now, and the orbital valve on this tractor has 3/8 inside diameter on all its hoses. I'll plumb my suction and return to reservoir with 1/2, but that's probably overkill. Steve
 
Steve, I am tapping into my tractor's, an IH 300u, hydraulics. The kit maker recommended a bypass filter, which he did not supply, but I did not expect it to get complicated-I really did not think it all the way thru. I was/am more concerned where to mount it, I guess, so I did not really worry about filtration details. I do have his diagram of the hose/flow routing, so I am not concerned about that. I did find the same filter assembly that you found also, just wanted to go local with NAPA, as there a few local. Mark.
 
I've got a spare used head on my bench, with a new filter, but neither the head, nor the filter have a bypass. It's 10 micron, 1/2 NPT in and out, so probably at least 15GPM. It mounts from the side. You can have it for the cost of shipping. I have a used Clark filter with built in bypass that fits it too, but its an oil filter and not hydraulic. So they probably make a bypass hydraulic filter that will fit this head. If you are interested, I'll take a couple of pics, and post them. I can probably find a filter element that will fit this head that has a built in bypass for you, and cross it to a Napa filter number.
 
Mark, here's the head and filter I was talking about. I can send you just the head for less than $10, and I'll search out a bypass filter element for it that you can get at Napa. Steve

cvphoto151055.jpg
 
I found a NAPA filter to fit this head. Napa Gold 1269. Here's the specs:
cvphoto151058.png





I don't think it has a bypass, but I'm not sure why that would be necessary on a steering circuit. Napa may be able to find one in their data that has an internal bypass.
 
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