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#1 Banjo fitting directions

Posted: Mon Jun 05, 2017 8:41 pm
by JD-JAG66
After test running the engine a couple of times I could notice a strong fuel smell.
I could trace this back to a leak from the banjo bolt on the bulkhead connector. The fuel pipe coming from the fuel pump is OK. The connector through the bulkhead is new, as are the banjo bolt washers.
The "female banjo bolt" (if there is a better word, please tell) was fitted with the flat side away from the connector. Basically the washer took all the tightening friction of banjo bolt.
I thought this was the correct way to fit this, since the other side of the "female banjo bolt" has an indent to fit the washer into. So I presumed I could tighten the banjo bolt until metal of the banjo bolt would hit metal of the connector.
Since I would prefer not to ruin another 2 banjo bolt sealing washers, was this the correct "direction" to fit the banjo bolt?
Cheers :salute:

#2 Re: Banjo fitting directions

Posted: Sat Jun 10, 2017 3:36 pm
by johnetype
Washers should be fitted on both sides of what you are calling the female banjo. The side with the groove in goes up against the head of the bolt going through the female fitting.

That means that in this case the smooth side of the female banjo goes against the connector bolted to the boot floor - with a washer in between.

It also means that whatever washers you use their outside diameter needs to fit inside the groove.

That's how it is on my unchanged from new Series 2 using aluminum washers. I can't say if one way is more correct than the other but the way you have described is the opposite to the way it is on my car.

BSP/UNF "female" banjos I've bought recently have no groove so direction of fitting isn't an issue.

John

#3 Re: Banjo fitting directions

Posted: Sun Jun 11, 2017 10:14 pm
by JD-JAG66
Thanks, I got the fibre washers from SNG, and they fit quite nicely.
Will fit the banjo bolt as by your explanation.
Have a great day

#4 Re: Banjo fitting directions

Posted: Tue Jun 13, 2017 9:20 pm
by Hugo
Just for future reference, "female banjo bolts" are called banjos ;) There is the banjo, and a banjo bolt that goes through it to hold it on. You can get caught out with metric washers on Imperial fittings - it's a minefield! You can blame Napoleon for it.