356C Caliper Banjo Bolt Torque

[Tom Hale]

Can anyone recommend a maximum torque value not to exceed on the banjo bolt with the copper washers on the caliper brake line fitting at which point further remedial measures are necessary in order to stop leaking brake fluid from this connection?

[Kevin Wills]

It doesn't take much torque to make it not leak. If you've already used the German torque spec of guttentite with a wrench and it is still leaking, there is debris on the washers or they are marred. Try taking it off, giving the copper washers a quick run over fine sandpaper on a flat surface and then clean everything up well and reassemble.

[John Brooks]

You can also heat the copper washer seals, red hot and let them air cool, to anneal the back to a soft condition before reinstalling. Then they will crush and seal easier.

[Martin Benade]

Unlike steel, quenching them in water leaves them just as soft, and blasts them clean too.

[Jim Hohensee]

When ever I am tightening a crush washer or any metal to metal connection with a flare fitting I always sneak up to the final tightening a little at a time. Tighten, loosen, tighten, loosen, etc. Each time the metals will swage to a good mating. You can tell the best final torque because it will become increasingly difficult to get any rotation.

[Jim Liberty]

That is what the Maestro would do Jim. ..................Jim.