Montecarlo Posted March 7, 2017 Report Share Posted March 7, 2017 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. Link to comment Share on other sites More sharing options...
Boat&Bikes Posted March 7, 2017 Report Share Posted March 7, 2017 No they do not require alignment. Ian. Link to comment Share on other sites More sharing options...
bizzard Posted March 7, 2017 Report Share Posted March 7, 2017 It shouldn't matter. If you look inside the banjo it should be half hollowed out for the fuel to travel all round it. Link to comment Share on other sites More sharing options...
Flyboy Posted March 7, 2017 Report Share Posted March 7, 2017 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. Link to comment Share on other sites More sharing options...
Flyboy Posted March 7, 2017 Report Share Posted March 7, 2017 Oops, Bizz beat me to it. Link to comment Share on other sites More sharing options...
Boat&Bikes Posted March 7, 2017 Report Share Posted March 7, 2017 I really like banjo bolts, don't know why but I always have. Ian. Link to comment Share on other sites More sharing options...
Chewbacka Posted March 7, 2017 Report Share Posted March 7, 2017 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 Link to comment Share on other sites More sharing options...
Montecarlo Posted March 7, 2017 Author Report Share Posted March 7, 2017 Many thanks to all above, a weight of my mind. Now to find the crush washers! Link to comment Share on other sites More sharing options...
mross Posted March 7, 2017 Report Share Posted March 7, 2017 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! 2 Link to comment Share on other sites More sharing options...
Tony Brooks Posted March 7, 2017 Report Share Posted March 7, 2017 Link to comment Share on other sites More sharing options...
Taslim Posted March 7, 2017 Report Share Posted March 7, 2017 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. Link to comment Share on other sites More sharing options...
jonesthenuke Posted March 7, 2017 Report Share Posted March 7, 2017 Dowty washers may be posh but they also work very well and can seal on mildly worn faces. I abandoned copper washers long ago. Link to comment Share on other sites More sharing options...
WotEver Posted March 7, 2017 Report Share Posted March 7, 2017 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? Link to comment Share on other sites More sharing options...
Boat&Bikes Posted March 7, 2017 Report Share Posted March 7, 2017 17 minutes ago, WotEver said: Are they the ones with the built in rubber ring? Yes. Ian. Link to comment Share on other sites More sharing options...
WotEver Posted March 7, 2017 Report Share Posted March 7, 2017 Ta Link to comment Share on other sites More sharing options...
Taslim Posted March 7, 2017 Report Share Posted March 7, 2017 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. Link to comment Share on other sites More sharing options...
mross Posted March 8, 2017 Report Share Posted March 8, 2017 But just check that the 'rubber' part is fully supported by the 'land' on both faces. If not, the seal might fail suddenly. Link to comment Share on other sites More sharing options...
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