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Suction filter restriction indicator (vacuum gauge). High pressure fittings are not required in this circuit. Schedule 40 pipe and fittings may be used.
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Speaking for myself, my LW6 came as a self contained unit, which I think most do, with it's own reservoir and pump. After blowing several pump seals I decided to install the prince pump and use the dozer's left saddlebag reservoir. That system worked well but then I started blowing cup seals in the LW6. The LW6 rapidly fell out of favor with me so I sold it and bought a LiTW BH7600 (equivalent to a LW7 sizewize) and plumbed it identically. That system worked well for me too until I decided I needed more versatility and power, so I sold the LiTW and bought an excavator with a hydraulic thumb and dozer blade. It has four different buckets (with quick-change) and a root rake.
Make sure the couplings on the rear of your tractor (and the tractor's hydraulic pump) have the capabilities and capacity for running a back hoe.
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3) On the return lines you can use anything you want as there is minimal to no pressure involved. The pressure side will require schedule 80 pipe, and JIC fittings.
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2) Both ports on the Prince pump are SAE O-ring, straight thread. You will need adapters if you are going to use tapered pipe. There are lots of different adapters available. In my case, I have quick disconnects on the suction and pressure sides mounted on schedule 80 90°elbows. This facilitated removing and reinstalling the pump. Sorry, no pic yet.
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1) A return line filter isn't really necessary with a suction filter, but it wouldn't hurt anything. I have a tendency to get anal and overdo things a bit but I like to know what's going on. Here is a pic of the return line filter I installed on my LW6. The pressure gauge measures filter restriction and there is an oil temp thermometer.
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I run a high capacity suction filter, has 1″ NPT in & out. I bushed down to 3/4″ NPT.
Can’t show pic from phone.Account deleted.
Yes and yes. The suction side filter is equivalent to a 60 mesh screen. Get them at Surplus Center (best price). The Prince pump is more than adequate for the LW6. In fact you will find that you will have to run at reduced r/m.
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Len, that is exactly how I plumbed my Prince pump. There is no need to install a relief valve because there is one built into the LW6 valve stack. I used it to power my LW6 also, but since that’s gone now I use it to power the laser grader.
Since you’re installing a suction side filter be sure to also install a vacuum gauge in the filter head so you can monitor the filter condition. They sell them at Surplus Center for around $10 with markings.Account deleted.
