I just purchased a B2650 with BH77, and noticed a leak where the hard lines connect to the valve body. I could barely tighten it with a standard line wrench. Are there better tools out there for these fittings? I am what people may refer to as a tool whore, in other words I prefer to have high quality specialized tools even if I rarely use them.
hydraulic fitting wrenches or sockets
- Thread starter e dogg
- Start date
Try a crow's foot. Sometimes you will need to sacrifice a wrench and either cut it or bend it after you heat it with a torch to get to the fitting. Time to use you past experiences if you are a wrencher.
No special tools needed - a standard open end wrench is the typical tool.
Those JIC fittings do not require a lot of torque to seal and over tightening is a common cause of leaks.
Two basic tightening guidelines:
- Torque- not recommended because of inaccuracies caused by lubricating oil.
- Flat to flat - prefered. Tighten to just barely wrench tight. Place a mark on two adjacent flats then tighten the nut a specific number of flats beyond that point - typically 1 to 2 flats depending on the size of the fitting.
Dan
Thanks for the info. I should have mentioned i could barley tighten the fitting due to the limited arc of the wrench due the othe fitting on either side, not because I was applying ape torque.
Happens all the time - I am sure you have solved that issue before. The flats method for gauging tightness is very useful in those situations.
Dan
Use a flare nut wrench,
or even better, a flare nut crows foot and a torque wrench.
Loosen the fitting, then torque to spec…
www.harborfreight.com
If you tighten it to stop the leak, you will deform the mating surfaces on the fitting…
or even better, a flare nut crows foot and a torque wrench.
Loosen the fitting, then torque to spec…
3/8 in. Metric Crowfoot Flare Nut Wrench Set, 7-Piece
Amazing deals on this 7Pc 3/8In Metric Crowfoot Flare Nut Wrench at Harbor Freight. Quality tools & low prices.
www.harborfreight.com
If you tighten it to stop the leak, you will deform the mating surfaces on the fitting…
Thanks Matt!! One of my fittings was just finger loose, so I shut off the machine and tightened it. I could only get a regular line wrench onto it so i just was gentle. I am pretty experienced wrenching on cars, which use JIC as well.
what do you think of these? Obviously these cant handle much torque, but that probably isnt a huge issue for these fittings.
what do you think of these? Obviously these cant handle much torque, but that probably isnt a huge issue for these fittings.
I use angle wrenches from Mac tools as the link. I have 4 sets of them, 5 if you include the Proto stamped ones. They are expensive but worth it. You can find lesser priced ones and some may even be from the same source. But many are low quality and may not work as well.
www.mactools.com
Open End and Angle Wrenches
www.mactools.com
Ship to the Hagerstown termin
Dan
The tools are fine for the small fittings used on your tractor. I don't think you will find many JIC (aka AN) fittings on your cars. I have never encountered one on any of mine. A few examples of the many different JIC hydraulic fittings below
Dan
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They are common in aftermaket automotive, such as oiling systems for upgraded turbos, or fuel connectors. AN are more common, but they are more expensive.
Yes, JIC fittings are used in aftermarket performance parts. I actually have some on the fuel line on my 1951 Ford 8N. I have never come across one as OEM equipment.
AN is an aerospace standard that is very similar to JIC. Most of the (overpriced) fittings sold to the automotive market as AN are actually JIC. The differences between AN and JIC are:
- AN has a class 3 thread fit while JIC is class 2
- AN threads have a round (UNJ) root while JIC has a flat (UN) root
- AN has a material and manufacturing certification.
Dan
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