Oil Tank Banjo Bolt leaking

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Niagara850

Niagara850

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Jul 7, 2010
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How tight do you crank down the Banjo bolt on the oil tank? I have been tightening in stages after runs to stem the flow. It's up to the point where the rubber gaskets are squeezing out. The leak is dimishing but still lubricating the back of the bike.
 
Confused ,did you say rubber ? Methinks mine are alluminum or copper, will check this . BTW the chain oiler should be sealed off permanently.
 
If you have the correct copper washers & all the mating surfaces are clean & true, a good heave with the correctly sized ring spanner should do the trick.Remember, the bolt is quite large so will need a good torque to provide a good pressure on the sealing washers.

Bob.
 
Thanks guys, that makes a lot of sense. I'll order up the proper washers. I spotted a small little black tube just above the oil filter after this afts run. Probably the chain oiler, there isn't anything on the chain side. There was a rubber O ring on the sump screen bolt too. I'm guessing it should be an aluminum or copper washer also. Do the square sump drain bolt and square geabox drain also have washers? Mine doesn't. Damm... just changed the engine and gearbox oil last week... Looks like I'll be draining the oil tank and sump again
 
and there's a flipping Postal Strike/Lockout on to make getting parts harder . I'll have to check and see how the suppliers are getting their parts out
 
Niagara850 said:
Thanks guys, that makes a lot of sense. I'll order up the proper washers. I spotted a small little black tube just above the oil filter after this afts run. Probably the chain oiler, there isn't anything on the chain side. There was a rubber O ring on the sump screen bolt too. I'm guessing it should be an aluminum or copper washer also. Do the square sump drain bolt and square geabox drain also have washers? Mine doesn't. Damm... just changed the engine and gearbox oil last week... Looks like I'll be draining the oil tank and sump again
Click to expand...

Washers are typical in most locations.
 
L.A.B. said:
Niagara850 said:
Do the square sump drain bolt and square geabox drain also have washers? Mine doesn't.
Click to expand...

If they are square-headed then they also appear to be non-standard as both would usually be hexagon head and the sump plug has a magnet. The original case threads could have stripped and been re-tapped?


http://www.nortonmotors.de/ANIL/Norton% ... 06&Part=32
http://www.nortonmotors.de/ANIL/Norton% ... 007&Part=2
Click to expand...

I see what you mean, that could be the case. I'll get under there and take a few pics. The're small and its interesting that the gearbox drain and sump drain are the same. The sump didn't appear to be magnetic either, i touched it to a wrench when I was changing the oil
 
Here are some pics of my situation

Sump screen bolt and square Sump Drain bolt

Oil Tank Banjo Bolt leaking

IMG_5241 by niagaraz, on Flickr

Square Gearbox Drain Bolt

Oil Tank Banjo Bolt leaking

IMG_5242 by niagaraz, on Flickr

Oil Tank Banjo

Oil Tank Banjo Bolt leaking

IMG_5239 by niagaraz, on Flickr
 
The PO hase done you no favors and fitted pipe fittings. Your nice bolts with crush washers and catch magnets are gone.
 
That's frightening!
I hope they are tapered threads?


Sump plug should look like this:
Oil Tank Banjo Bolt leaking


And the original gearbox drain plug would have been 3/8" - 20 BSF (no magnet) with a 1/4" Whitworth (.525" A/F) thin hexagon head.

PS
The main stand bolts should really be fitted the other way around-with their heads on the inside of the cradle otherwise the protruding end of the left bolt may rub against the stand spring and cause it to fail prematurely if fitted so the bolt head is on the outside.
 
I use copper washers - anneal them (5 or 6 seconds with a propane torch) each time I reuse them and they can be used indefinitely and seal beautifully with minimal torque on the bolts.
 
Not the first non standard thing I've found. Cigarette foil on the fuse... some bolts in place of proper screws on the switch gear... and more but I'm sure lots of these machines are like that. Who knows after 35 years. So far all fixable. I have been slowly going through it and fixing stuff. First priority was to get it to run nicely. I'm waiting till next winter to open up the gearbox and look for the dreaded layshaft bearing. I was figuring that after 30k miles that had probably failed already, can I be that lucky? :roll: I often wonder what stories she could tell?
 
Niagara ,the Postal strike is being legislated back to work monday so you can order in those washers n' bits very soon. My belt drive kit was ordered 3 1/2 weeks ago and is sitting in a pile of mail somewhere.
 
Be careful in the meantime. My bike had enough miles on it to have .020 over pistons in it (don't know what the actual mileage was) and it still had a Portugese layshaft bearing in it. Gave me no problems and looked in good shape when I took it out but it was worth it for the peace of mind when cruising at speed. Locking up the rear wheel on a highway...not good. Best of luck.
 
Torontonian said:
Niagara ,the Postal strike is being legislated back to work monday so you can order in those washers n' bits very soon. My belt drive kit was ordered 3 1/2 weeks ago and is sitting in a pile of mail somewhere.
Click to expand...

Sound like the Postal strike its over if the Senate does what there told. I've got a few things hung up as well but they can keep the bills... I've looked everthing up online, looks like I need about $25 bucks worth of bits. Will probably take a week or so for the backlog to get sorted out

Be careful in the meantime. My bike had enough miles on it to have .020 over pistons in it (don't know what the actual mileage was) and it still had a Portugese layshaft bearing in it. Gave me no problems and looked in good shape when I took it out but it was worth it for the peace of mind when cruising at speed. Locking up the rear wheel on a highway...not good. Best of luck.
Click to expand...

I expect the Portuguse bearing is in the gearbox as well. I have learned to take nothing for granted with this machine.The PO told me he hadn't opened it up. He was the orginal owner and sold the bike to his brother and inherited it back. He didn't know if his brother got into it
 
Niagara ,phone up the PO and see if the brother changed out the bearing only because it is work that will take a bit of time and freezing of bearing and gun heating of box. 30,000 Kms. ? Mine at 25 did a tic - tic -tic sound then the kicker slapped up n down then a minute later she locked up with cars blasting their horns on my tail. Fun,excitement. Strike over in 14 hrs.
 
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