Stuck Brake Line Flare Nut

[Diesel911]

This is not on a Mercedes but a stuck Brake Line Flare Nut is a generic issue on a lot of vehicles. (Also I am promoting the use of the Crowfoot Flare Nut Wrenches.)

I sprayed the Flare Nut down with PB Blaster and let that soak in for 1 hour. But, even with a Crowfoot Flare Nut Wrench It did not want to budge with the force I was willing to exert on it.

Since I was removing the Flare Nut to change the Brake Hose damaging the Hose was not an issue. I used a propane Torch and heated the steel hose end and the heat worked like magic and the Flare Nut turned easily.

Note that there would have been no room for that special Vice Grips that is made for stripped Nuts and Bolt heads and there was actually little room for a regular Flare Nut Wrench and I did not have a regular 12mm Flare Nut Wrench. Hence the use of the Crowfoot Flare Nut wrench.

In the picture I have an larger metric set that I got on eBay from eBay which turns out to be more complete I don’t recall the cost on that.

The other 2 sets are from Harbor Freight and without the 20% off coupon are $12-$13 dollars. Unfortunately the Harbor Freight Metric Set dose not have 11mm nor a 16mm.

With care you can use the 17mm Crowfoot Flare Nut on your Fuel Injection Hard Line Nuts.

The reason for the 2 sets of metric Crowfoot Flare Nut Wrenches is that I could not find the 12mm I need from the ebay set when I changed the first Brake Hose last week and I bought another set from Harbor Freight just to get the job over with. Later I looked for and found the missing one and was able to use that today when I did the last hose.

In between that time I bought the Harbor Freight SAE Crow Foot Wenches as I had no set of them.

I too a Q-tip and dipped it in Never-seize type compound and coated the threads of the brake line flare nut with it. Next time it won't be stuck.