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You have two hose connections from the "hydraulic block" to two different ports on the loader valve. One supplies pressure from the tractor to the loader valve. The other returns pressure from the loader valve to the tractor. That second connection is the power beyond port and hose connection...

I had to go look at the BH77 manual and edit this to get the tractor side connections straight. You have the flow correct but the permanent connection is wrong. The connection that previously fed the backhoe gets permanently attached to P port on new valve. That is the female quick connect on...

Valve is fed by hose that previously fed back hoe. Power beyond port on new valve simply carries that over to backhoe. Dan

You do not use tees!!!! Remove all your changes and start over: Disconnect power beyond hose from loader valve and install a male quick connect on it. Install a female quick connect on the power beyond port of thr loader valve Now connect power beyond port on the loader valve to inlet on...

C goes to P N becomes your new C T goes to tank on the tractor The rest stays the same. Dan

I mean the round directional valve in the diagram I posted. It MUST be turned clockwise as far as it will go. If the valve is fully clockwise and the loader still does not work check the inlet pressure by connecting a 3000 PSI pressure gauge to the ĺoader valve inlet supply hose. Dan

The leak is not your problem. Start by checking the position of the diverter valve on the hydraulic outlet block. Its located on the right side of the engine. The drirectional valve should be turned clockwise as far as it will go. If it is correct and the hydraulics are still not working...

If NAPA can't help I can supply 3/8 MXT. Even with shipping probably less tha NAPA.

Good things come to those that procrastinate. After a few short trips the recalcitrant gauge is now functiknung properly. I guess sloshing fuel has freed up the float arm.... Dan

Did the same for many years using a B7200. Let me suggest you will only want 200-300 pounds of material in that hopper. Dan

Same as things like belts and hoses on over the road cars and trucks. When they break they often leave you with a dead machine walk home situation and potentisl for more serious damage. Yet most owners roll the dice and very few people actually follow the manufacturers recommended replacement...

If you look at the couplers you will likely find a model and part number engraved or stamped on them. Post that info znd you will get a more reluable answer.

I do not know what the requirements for uploading are. Dan

When you do that the photo is upliaded to OTT servers and they host it. Only members in good standing can do that. Here is a random photo residing on a server outside OTT which I linled by inserting BBCODE img tags and the url into my message. Even new members can link photos like that. Dan

The accents are the re a ult of a smart phone with a mind of its own. AFAIK CAT's only foray into agricultural tractors was the Challenger brand which is now owned by AGCO. Heavy earth moving equipment does not employ common sump designs and the lubricants used in thos machines are a whole...

Post a picture of the replacement loader valve. Dan

Hagrid that's a little too opaque for me to decipher this morning. Dan

I sent you a PM with my email address

Only partly correct. You can link any hosted image but you cannot upload your images to this site to host. Dan

Yes. Dan