Hydraulic newbie
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J_J
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The T on the valve is normally the TANK port or return port.
PB port will have PB, or PBY or something similar.
PB port will have PB, or PBY or something similar.
J_J
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I don't know the schematic layout of your hyd system, but there are some things you can do.
Most valves that only have a return port for the fluid, has a very low back pressure rating for the tank/return port some about 250 to about 500 psi. This kind of valve should be used in a high pressure series flow path.
If your BH has a relief valve on it, and a PB port you can route the pressure line directly to the BH first and then to the FEL.
Install an external relief valve before any valve for pump protection, especially when using QD's.
Disconnect the line going to the 3pt and install a female QD. This will be used when removing the BH. Add a male QD to the pump output line. This will feed the BH.
If you will not need the 3pt, you can then run the return from the BH to tank. If you need 3pt while BH installed, then run the PB from the BH to the 3pt input port.
For 3pt operation with no BH, connect the male QD to the female QD 3pt input .
2. You could just replace the FEL valve with a valve with PB, and run a single hose to the back and a PB hose hose from the BH to the 3pt. The tank port from the BH would then go to tank.
Most valves that only have a return port for the fluid, has a very low back pressure rating for the tank/return port some about 250 to about 500 psi. This kind of valve should be used in a high pressure series flow path.
If your BH has a relief valve on it, and a PB port you can route the pressure line directly to the BH first and then to the FEL.
Install an external relief valve before any valve for pump protection, especially when using QD's.
Disconnect the line going to the 3pt and install a female QD. This will be used when removing the BH. Add a male QD to the pump output line. This will feed the BH.
If you will not need the 3pt, you can then run the return from the BH to tank. If you need 3pt while BH installed, then run the PB from the BH to the 3pt input port.
For 3pt operation with no BH, connect the male QD to the female QD 3pt input .
2. You could just replace the FEL valve with a valve with PB, and run a single hose to the back and a PB hose hose from the BH to the 3pt. The tank port from the BH would then go to tank.
What complicates this configuration is that there are actually two pumps in the tractor, one for the loader and one for the rear 3 pt and remote. It's kind of cool, but it makes things really hard to figure out. I'll post more tomorrow on this.
To update, there are two pumps in the 545C. A large (26 GPM) pump in the front, and a smaller pump in the center space for 3pt and remotes (Remotes run at 8 GPM @ 2200 RPM). Anyway, as far as I can tell with the the 764 connection diagram there is a power beyond on the backhoe that connects into the loader
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J_J
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I had to look up hot linking, did not know how it worked.
WHAT IS HOTLINKING AND BANDWIDTH THEFT?
Bandwidth theft or "hotlinking" is direct linking to a web site's files (images, video, etc.). An example would be using an <img> tag to display a JPEG image you found on someone else's web page so it will appear on your own site, eBay auction listing, weblog, forum message post, etc.
Bandwidth refers to the amount of data transferred from a web site to a user's computer. When you view a web page, you are using that site's bandwidth to display the files. Since web hosts charge based on the amount of data transferred, bandwidth is an issue. If a site is over its monthly bandwidth, it's billed for the extra data or taken offline.
Excerpt:
A simple analogy for bandwidth theft: Imagine a random stranger plugging into your electrical outlets, using your electricity without your consent, and you paying for it.
WHAT IS HOTLINKING AND BANDWIDTH THEFT?
Bandwidth theft or "hotlinking" is direct linking to a web site's files (images, video, etc.). An example would be using an <img> tag to display a JPEG image you found on someone else's web page so it will appear on your own site, eBay auction listing, weblog, forum message post, etc.
Bandwidth refers to the amount of data transferred from a web site to a user's computer. When you view a web page, you are using that site's bandwidth to display the files. Since web hosts charge based on the amount of data transferred, bandwidth is an issue. If a site is over its monthly bandwidth, it's billed for the extra data or taken offline.
Excerpt:
A simple analogy for bandwidth theft: Imagine a random stranger plugging into your electrical outlets, using your electricity without your consent, and you paying for it.
J_J
Super Star Member
- Joined
- Sep 6, 2003
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Since you have two pumps, and they are open center, any valve you add must be in series with the flow from that pump.
You should use a valve with PB to send fluid downstream. You add in the BH valve with PB as the first valve after one of the pumps and feed the other valves downstream using the PB out on the BH valve. The OUT/RETURN port should go to tank.
One pump probably has more GPM's than the other, and the more GPM's you use, the faster things work. You might not want fast, so use the lower GPM pump to feed the BH.
One pump circuit might look like this.
Pump, BH valve , divider circuit, loader valve, then tank.
Other pump circuit might look like this. Pump, remote valve, 3pt, then tank.
Not sure which pump is feeding the power steering, and it might be a divider valve.
Which ever pump you use, leave the divider circuit alone.
If you remove the BH, you will need to couple the tractor unused BH lines together.
You should use a valve with PB to send fluid downstream. You add in the BH valve with PB as the first valve after one of the pumps and feed the other valves downstream using the PB out on the BH valve. The OUT/RETURN port should go to tank.
One pump probably has more GPM's than the other, and the more GPM's you use, the faster things work. You might not want fast, so use the lower GPM pump to feed the BH.
One pump circuit might look like this.
Pump, BH valve , divider circuit, loader valve, then tank.
Other pump circuit might look like this. Pump, remote valve, 3pt, then tank.
Not sure which pump is feeding the power steering, and it might be a divider valve.
Which ever pump you use, leave the divider circuit alone.
If you remove the BH, you will need to couple the tractor unused BH lines together.
