hayabusaman0 said:
Hi All, My 850 drains most of it's oil overnight into the crankcase. Iv'e pulled the timing cover off to check the oil seals & camchain adj, I might as well change the seals while it's off, is there any thing else to check while I am in there?
Use monograde (SAE 40 or 50) oil.
As advised, lap the pump to remove all end play (see your workshop manual) lapping the pump should be considered a periodic maintenance task, not only to reduce the rate of drain-down, but also to maintain pump oil pressure.
Always leave the crank positioned around TDC, as then the oil has to climb 'uphill' slightly to escape! It's not a cure, but it can slow the rate of drain.
If the timing cover gasket (or sealant, if used in place of a gasket) is not sealing around the pressure relief oil way drilling properly (MkIII models don't have the drilling in the cover, but still have it in the cases) then the oil will simply drain out at that point, as the drilling is directly connected to the oil feed from the tank.
hayabusaman0 said:
Also I need a rear brake drum(mine is hooked & the paddles are loose) where is the best place to buy(UK)?
As you are in the UK there's no shortage of Norton parts suppliers.
http://www.nortonmotors.de/ANIL/Distributors.htm
My first choice for parts would be Mick Hemmings:
http://www.mickhemmings.com/
Then either RGM Motors:
http://www.rgmmotors.co.uk/
or Norvil:
http://www.norvilmotorcycle.co.uk/
I expect the others on the list are good too, but I've never dealt with them. [Edit] (actually, that's not quite true, as I've bought Triumph parts from TMS who always gave good service).
Or you can buy parts directly from Andover Norton:
http://www.nortonmotors.de/ANIL/Norton% ... s-list.php