Hitachi zx35u - new thumb and needs couplers

[12V71]

The trick is to wind the tape short of the end of the thread so that it pushes back up the thread as it's tightened. I guess I've been lucky.

Dunno why anybody would use tape on ORB fittings (shrug) it's only for NPT stuff.

I don't know either. I have no control over other people's people but I get paid good money to fix their screwups.

[SlowBlues]

I like the yellow "teflon" tape, for gas pipe, it's supposed to be more hydrocarbon resistant. I've never had any problem with the white stuff either though.

[Lis2323]

Don’t you guys just love using Teflon tape on a machine fitting outdoors and there is NO WAY to block the breeze????


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[ronsii]

Don’t you guys just love using Teflon tape on a machine fitting outdoors and there is NO WAY to block the breeze????


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LOL!!!!! well you're not supposed to pull off 3 feet of it at a time I saw Sid do that and he was out there for half an hour trying to grab the end of it while the breeze kept flopping it around like a windsock

[Lis2323]

AHA. I just managed to find a photo ( no comment please 12V71 )

These are METRO couplers we used to use on the farm. We converted EVERYTHING to them.

They connect and disconnect under pressure with about a 90° rotation. Worst case scenario if you were wimpy you could always say your hands were greasy and you used a big adjustable wrench for the part turn.





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[ronsii]

AHA. I just managed to find a photo ( no comment please 12V71 )

These are METRO couplers we used to use on the farm. We converted EVERYTHING to them.

They connect and disconnect under pressure with about a 90° rotation. Worst case scenario if you were wimpy you could always say your hands were greasy and you used a big adjustable wrench for the part turn.





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I haven't seen those on any machines around here... yet. I can see where they would be handy

[Lis2323]

I haven't seen those on any machines around here... )

It would be a bit of an exaggeration but I’m tempted to say I may have bought them all...


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[ronsii]

It would be a bit of an exaggeration but I’m tempted to say I may have bought them all...


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Do those still have a slip ring on them for release? or is it simply a twist that 'unlocks' them?... I see you have them mounted in bulkhead type configuration... would make a slipring harder to use...

[Lis2323]

Do those still have a slip ring on them for release? or is it simply a twist that 'unlocks' them?... I see you have them mounted in bulkhead type configuration... would make a slipring harder to use...

No slip ring. Just line it up and twist it in. If I can do it.....well maybe just leave it at that

Those bulkhead “hangers” in the pic were typically mounted behind the tractor seat to service trailing and three point mounted implements with hydraulics.


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[farmersammm]

I'll bet you guys remember when I retrofitted my setup to ball valves. I was having the same problem mentioned. Total PITA to connect/disconnect implements. I lived with it for over 20 years, then got fed up with it FINALLY.



Relieve the pressure on the tractor side coupling by closing the ball valve allows you to shove the implement line into the coupler even if it's pressurized, and you don't care to crack the line to relieve pressure. The trapped pressure simply doesn't affect how the two leeeeetle balls interact, because your tractor side is already depressurized. Implement ball thingy just goes in eeeeezy peeeeezy.

I still pop the sleeve to remove lines after working, but it's with about 10% of the effort it used to require. Simple tap with a wrench/hammer/hitch pin. My life got so much easier.

[farmersammm]

I guess I coulda done a simple bullkead thing......................BUT THAT WOULDN'T HAVE INVOLVED HOURS OF MACHINING, AND MEGA PAGES OF THREAD CONTENT, REPLETE WITH GOBS OF PICTURES

[Lis2323]

I guess I coulda done a simple bullkead thing......................BUT THAT WOULDN'T HAVE INVOLVED HOURS OF MACHINING, AND MEGA PAGES OF THREAD CONTENT, REPLETE WITH GOBS OF PICTURES

Heaven forbid you start a trend here...


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[12V71]

I haven't seen those on any machines around here... yet. I can see where they would be handy

The Metro coupler has been around a long time. We have tried them on a hay squeeze mounted to a Case 721 loader, the problem we ran into was blowing out the oring in the swivel part of the male plug. I don't remember the relief pressure on that loader but it's higher than most farm tractors, all the hoses on the handler heads have been replaced with 4 wire hoses and all NPT fittings have been replaced with JIC swivel fittings. Occasionally they even blow the dead end off the welded cylinders. (not after I reweld them). I think the telehandlers are running around the same pressures.

[MinnesotaDave]

Well the hydraulic cylinder was 2" too long, so a farm scrap took its place
The thumb was well used immediately, and for the rest of the day

(not having a thumb from the factory is stupid....)

Sweetie thinks it looks redneck, I say it's a beautiful thing - LOL

[MinnesotaDave]

Ran it all weekend again, remembered to take pics of couplers this time

Anyone recognize the couplers?

[ronsii]

Ran it all weekend again, remembered to take pics of couplers this time

Anyone recognize the couplers?

Looks like regular bobcat flatface connectors
Here's a spec for the 1/2NPT versions

[ronsii]

Although yours don't seem to have as much taper(1) as they should???

I do see some numbers(2)

[MinnesotaDave]

Although yours don't seem to have as much taper(1) as they should???

I do see some numbers(2)

... I guess I should put my glasses on next time I take pics. I didn't even see the numbers when I was out there.