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GTS primary case "O" ring
Posted: Thu Apr 04, 2013 1:39 pm
by bobnorton
The parts list shows an "o" ring in the bottom of the primary outer case behind the gasket. There does not appear to be one on my bike ,what is its function ? is it important . Is it a backup to the gasket?.I also appear to be missing the large washer behind the outer case bearing, Ive been told that this will affect the oil supply to the big end , I thought the B/E supply was on the pump side?, the drawings lie??.
Re: GTS primary case "O" ring
Posted: Fri Apr 05, 2013 12:17 pm
by ducadini
If it's in the lefthandside cover, that will be the oilfeed to the crankshaft.
The o-ring works better under pressure and is best fitted.
cu
ducadini
Re: GTS primary case "O" ring
Posted: Fri Apr 05, 2013 12:26 pm
by bobnorton
Thanks mate, Looks like i'm in for a long haul,( again). I may be able to replace the missing washer with a shielded bearing.The big end is surely suspect now.
Re: GTS primary case "O" ring
Posted: Sat Apr 06, 2013 2:01 am
by ducadini
Better have a look at the bearing in the clutchcover first.
Someone could've fitted a RS or Z type bearing (closed for oil or dust) and gotten rid of the washer.
Crank oil is via the clutch-side, and as far as I recall, the drawings are correct.
cu
ducadini
Re: GTS primary case "O" ring
Posted: Sat Apr 06, 2013 2:14 am
by bobnorton
Hi Ducadini, There is an oil circulation detail on this site and it appears to show the crank oil comming from below the filter ( but after close inspection does not!).The bearing in my clutch cover has no shield and no closing washer. Heaven knows how the B/End has survived, i now doubt it has!!.There are plenty of metalic fragments in the sump.
Re: GTS primary case "O" ring
Posted: Wed May 08, 2013 12:45 am
by bobnorton
Nigel Lacey has come up trumps with the parts i need, hope to get it running soon when we will find out what state things are.