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 | bruceb
Join Date: Apr 2004 Posts: 4 minnesota 
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2004-05-06 85336
I am in the process of buying a kubota 7800 with the loader valve installed can I run a hyd top link off of the mid port and what do I need if possible also is there any kit type top links available thanx bruce
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| MadRefereee
Join Date: Jul 2003 Posts: 23 New Hampshire
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2004-05-06 85355
The B7800 has no rear aux hydraulic outlet so your only option is to run another spool valve off the loader's power beyond.
Your best bet for a complete kit is the Terrain Contour Control (TCC) setup from Integration Engineering. Their web site is www.topandtilt.com. Jim McCuan at IE is a great guy and very helpful. I know of at least 2 people who have TCC setups on a B7800 and both love it.
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| bruceb
Join Date: Apr 2004 Posts: 4 minnesota
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2004-05-06 85365
madreferee thanx for the info bruce ....
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| TomG
Join Date: Feb 2002 Posts: 5406 Upper Ottawa Valley 
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2004-05-07 85432
If the tractor Bruce is looking at has after-market loader hydraulics there may well be three control valves. However, I haven't heard of such a setup used with a joystick linkage. Another possibility is confusion in terminology and maybe a 'mid-port' refers the PB line and an additional valve assembly could be used as Ref mentioned.
I run a top-link off my loader valve on my Ford but it has three control-valve sections and doesn't use a joystick linkage. It also isn't factory equipment and there is no three-valve factory option.
Another possibility is getting a top-link with hoses long enough to connect to the loader valve and steal the bucket valve. I do that when my forklift is mounted since it requires two rear outlets. It's OK for the forklift since I only use the loader for holding ballast when doing forklift work. For grading I alternate often between loader and scraper work and stealing the bucket valve wouldn't be desirable.
In addition to Ref's source, I think TISCO supplies top-link kits and a dealer may know of other sources. There's been discussion here the desirability of optional pilot operated check valves on the cylinder to help keep blade angles more constant in operation. Mine doesn't have them. ....
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