Author Topic: rocker feed banjo leak  (Read 486 times)

Offline baz

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rocker feed banjo leak
« on: 26.03. 2020 00:01 »
does anyone have any tips on stopping the oil feed banjos from leaking
i have used the ordinary fibre washers behind the banjos but always have problems with them leaking!
they have been ok for quite a few years but since removal to change a rocker box gasket they have started leaking again

Offline Peter in Aus

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Re: rocker feed banjo leak
« Reply #1 on: 26.03. 2020 00:42 »
What I did with my 58 A10 was grind down a flat washer to just fit in side the banjo so as to leave about a 1/16 recess in side the banjo and fitted a suitable "O" ring. That fixed the problem for me.
Peter

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Online Greybeard

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Re: rocker feed banjo leak
« Reply #2 on: 26.03. 2020 09:54 »
I currently have Doughty washers behind mine.

Online Greybeard

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Re: rocker feed banjo leak
« Reply #3 on: 26.03. 2020 09:56 »
I think the problem with fibre washers is that they compress so you need to nip them up every so often.

Offline Topdad

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Re: rocker feed banjo leak
« Reply #4 on: 26.03. 2020 11:55 »
I can never find an exact fit from modern fibre washers perhaps that's the problem  :-\
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Offline a101960

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Re: rocker feed banjo leak
« Reply #5 on: 26.03. 2020 13:12 »
Quote
I currently have Doughty washers behind mine.
Yep, that is the solution. Fit and forget.

Offline baz

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Re: rocker feed banjo leak
« Reply #6 on: 26.03. 2020 14:00 »
thanks for the replies
the Oring and the dowty washer both sound better than the fibre washer
cheers

Offline bikerbob

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Re: rocker feed banjo leak
« Reply #7 on: 26.03. 2020 14:08 »
I am using aluminium washers given to me some years ago by a friend who worked with hydraulics you can buy various sizes on ebay quite cheaply you could get a pack of 20 for undeer £4. they are quite soft and I have never had a leak using them.

Online KiwiGF

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Re: rocker feed banjo leak
« Reply #8 on: 26.03. 2020 20:11 »
does anyone have any tips on stopping the oil feed banjos from leaking
i have used the ordinary fibre washers behind the banjos but always have problems with them leaking!
they have been ok for quite a few years but since removal to change a rocker box gasket they have started leaking again

From memory you have be careful that you have the rocker shaft is positioned correctly otherwise it’s possible to have the banjo bolts seemingly tight but not actually exerting pressure on the fibre washers.
New Zealand

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Offline t20racerman

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Re: rocker feed banjo leak
« Reply #9 on: 27.03. 2020 17:27 »
I've always used an anerobic sealant and no washers. 36 years of riding, much of it thrashing, and I've never had a leak from there (Everywhere else, yes, but not there!)
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Re: rocker feed banjo leak
« Reply #10 on: 27.03. 2020 21:28 »
I've always used an anerobic sealant and no washers. 36 years of riding, much of it thrashing, and I've never had a leak from there (Everywhere else, yes, but not there!)
I have wondered about this. The mating faces are angled as though to seal with nothing more than sealant. I just checked the parts list. It shows washers.

Offline baz

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Re: rocker feed banjo leak
« Reply #11 on: 04.04. 2020 17:30 »
Well I went to remove the rocker oil feed banjo bolts and found them both to be loose!
I know dam well that I'd fully tightened them!
I removed the banjos and found the fibre washers were firmly attached to the rocker box
Instead of removing them I fitted dowty washers on top of them
Tightened the bolts up and went for a ride
When I got back the bolts were loose again!!! I can only assume the fibre washers were settling in?
I tightened them again and that's seems to have done the trick
I have been out several times with no leaks at all
Cheers

Offline Bsalloyd

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Re: rocker feed banjo leak
« Reply #12 on: 28.04. 2020 03:41 »
Here in the American colonies the “Dowty seals” go by the name Stat-o-seals. I use them instead of fiber washers where they will fit.
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Online AdrianJ

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Re: rocker feed banjo leak
« Reply #13 on: 28.04. 2020 10:26 »
Anybody got a size or part number for the Dowty washers?
 Just to simplify ordering some.
Adrian
'53 Plunger Flash, Steib S500.


Offline hdawson

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Re: rocker feed banjo leak
« Reply #14 on: 28.04. 2020 10:46 »
Just replaced mine after this thread’s advice.
Sealant worked well for a time but weeded eventually.
1/4 BSP fits nicely..
Grand sum of $5 to  try to fix a persistent problem seems well worth a try.
No leak so far so fingers crossed.
Next will be replacements for banjo at oil tank feed.
Cheers, Hadrian.

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