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I agree with David. Unless you’re running equipment with hydraulic motors, like a brush hog, rototiller, or flail mower, an oil cooler shouldn’t be necessary. Most hydraulic oils are good for 195 degrees F. I had a temperature gauge mounted on my LW-6 backhoe, and even working it hard on a hot day it never got over 125 degrees.
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That piece of rubber could be from a broken O-ring in your shifter valve, or worst case scenario from inside the shuttle clutch.
While ISO AW 46 hydraulic oil may get you by, it isn’t the oil I recommend for these shuttle clutches. The oils I recommend are ISO 46 EP100 hydraulic oil and ISO AW 100 machine oil (preferred). Both of those oils have an AGMA rating of 3 which is indicated for geared friction drives, and have a slightly higher viscosity. ISO AW 46 hydraulic oil only has an AGMA rating of 1.
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The screens are installed behind the three bolt flange on the bottom right side of the shuttle clutch housing where the pump suction hose connects. I’m not sure what orifice you’re referring to because there shouldn’t be any restrictions in the pump suction line at all.
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It sounds to me like you’re losing hydraulic pressure that compresses the servos, and somehow related to time and/or localized heat. Have you checked/cleaned the pump suction screen in the bottom of the housing? Also possible that the clutch pump bypass/relief is sticking open – may be that the spring is weak or broken. If the pump doesn’t have a relief valve there is one in the shift selector valve. The selector valve also has O-rings that could be bypassing and just dumping oil back into the reservoir.
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Although it would probably be more expedient to just cobble something together locally since it’s just for testing.
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The 20mm x1.5 jam nut fit perfectly on the steel line, which as an o-ring on the end of it’s face. So, now I need to find a 20mm cap that has a flat face on the inside, or I need to find a full size 20mm nut that I can weld a plug with a flat face inside it.
That is for a DIN fitting and probably won’t work on a face seal connector. The only place I have DIN fittings on my 284 are on the Z-20 loader. The tractor and backhoe all seem to be either O-Ring face seal or BOSS seal (sealing washer with straight threads). DIN is a different animal completely.
Correct, it has a male internal plug with an O-ring. The male plug inserts into into the pipe hole. If the pipe hole is ~12mm it will fit inside. It’s a DIN-S cap. Should work. The types of fittings are known as ORFS = O Ring Face Seal, and ORB = O Ring Boss (One type uses a O-ring captive washer, and the other uses a recess cut in the body to hold the O-ring captive with a jamb nut on the fitting, this allows for indexing when necessary.
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The 20mm x1.5 jam nut fit perfectly on the steel line, which as an o-ring on the end of it’s face. So, now I need to find a 20mm cap that has a flat face on the inside, or I need to find a full size 20mm nut that I can weld a plug with a flat face inside it.
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Hal is being pretty aloof about it. Not a good sign. Since he has all of our email addresses I think a notification of some sort would have been in order.
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