backhoe hookup: Back Hoe  -- Tractor Attachments Implements 3ph Discussion Forum and Review backhoe hookup: Back Hoe -- Tractor Attachments Implements 3ph Discussion Forum

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 09-01-2001, 14:37 Post: 31496
Zippy



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 backhoe hookup

Just had my first chance to take my NH458C off my TC40D. The two lines I disconnected that are on the tractor dont seem to want to go together (different male and female size). Do I just cap them off? The two on the hoe will stay loosly coupled but I have some minor leakage. Was this a mistake by the dealer? Are these lines supposed to link together when not in use? I'm out of comission until I get this figured out...






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 09-01-2001, 18:23 Post: 31498
james mills



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 backhoe hookup

my outboard hydraulics leaked at first when i unhooked rear impliments. i then learned here that the distribution to the rear could be shut off on some tractors. once i found the control on mine, no more leaks. i hope you have as easy a fix as i did






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 09-02-2001, 06:58 Post: 31505
TomG

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 backhoe hookup

Depends on the hook-up. Hoes have definite input and output hoses, and connecting a hoe backwards damages things. The different sized connectors most likely are used to prevent the hoe from being connected backwards. I run my hoe from a rear circuit which is under valve control (It's a third valve on my loader control) Since the same circuit is used for ordinary double acting cylinders on fork-lifts, snow-blower etc, the connectors have to be the same. I do have to make sure I know which hose gets pressure though. With a valve-controlled hookup like mine, I don't have to do anything except release the valve, disconnect the hoses and put on dust covers. However, many hoes are power beyond hook-ups. With such hoo- ups, the open-centre flow goes through the hoe and the two feeds from the tractor must be connected to each other if the hoe is removed. A short hose with appropriate connectors is used. If quick connectors are used, nothing will leak except for a bit of oil in the connector body. However, a quick connector will seal off the high pressure line when the male end is removed, which will cause the system pressure relief valve to open. A tractor shouldn't be operated for long with the relief valve open. The shut off referred to probably is a diverter valve that selects between remote (3ph) and auxiliary hydraulic systems. Hydraulic devices other than the 3ph are usually connected through an auxiliary system, which in turn feeds the 3ph. Changing a diverter valve from auxiliary to remote usually will disable all hydraulics except for the 3ph.






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 09-03-2001, 08:47 Post: 31531
Zippy



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Thanks for the replys. After going through the manuals a few times I figured it out. The male was capped off (outlet from hoe) and the female was plugged into the control boby giving me hydralic power to my 3pt and rear remotes. With everything disconnected and tractor started I noticed the female line went stiff and I had no power out back. So I guess the rule is not to have a stiff hose that's not connected???






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Discussion Boards > Active Subjects > Messages as Posted > Back Hoe Forum

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