Banjo bolt

[Montecarlo]

Ok here goes

Got a banjo connection that feeds diesel into my engine.Its the main feed from the fuel tank. Now it's leaking so I'm replacing the copper crush washers. Now the bolt is hollow along its length but it also has a hole horizontally across the bolt going thru the "hollow tube " this hole or two holes about 5 mill in diameter  Does this hole or holes have to align with the the fuel pipe going into the fitting, or will the fuel still go thru if it's not exactly aligned. Sorry I've not explained  this too well! My problem is that I have to nip up the washer nice and tight and this tightened position may not correspond with my holes being in line with the pipe.

[Boat&Bikes]

No they do not require alignment. 

Ian.

[bizzard]

It shouldn't matter. If you look inside the banjo it should be half hollowed out for the fuel to travel all round it.

[Flyboy]

As ianali has said. The reason is that the inside of the banjo is concave & the fuel flows all around the bolt, so no alingment required.

[Flyboy]

Oops, Bizz beat me to it.

[Boat&Bikes]

I really like banjo bolts, don't  know why but I always have.

Ian.

[Chewbacka]

6 minutes ago, ianali said:

I really like banjo bolts, don't  know why but I always have.

Ian.

I don't like banjos - not a good noise

[Montecarlo]

Many thanks to all above, a weight of my mind. Now to find the crush washers!

 

[mross]

Copper washers don't need to be crushed.  If they have gone hard you can soften them easily in a gas flame on your cooker.  Just hang them off a fork and heat until cherry red.  Then drop them and said fork into cold water.  This is not essential to the annealing but stops them melting carpet or counter top!

[Tony Brooks]

[Taslim]

As mross said though soft copper washers can be had off fleabay or your local hydraulic  pipe purveyors for very little. 

If you want to go posh get some Dowty washers.

[jonesthenuke]

Dowty washers may be posh but they also work very well and can seal on mildly worn faces. I abandoned copper washers long ago.

[WotEver]

5 minutes ago, jonesthenuke said:

Dowty washers may be posh but they also work very well and can seal on mildly worn faces. I abandoned copper washers long ago.

Are they the ones with the built in rubber ring?

[Boat&Bikes]

17 minutes ago, WotEver said:

Are they the ones with the built in rubber ring?

Yes. 

Ian.

[WotEver]

Ta

[Taslim]

It's a great device.  The more internal pressure you put on the seal the tighter it grips. They resist vibration and are  reusable too.

[mross]

But just check that the 'rubber' part is fully supported by the 'land' on both faces.  If not, the seal might fail suddenly.