I have a late 1973 850 in very nice order. I would welcome some advice on the following issues:
The clocks have the Green Globe and are marked on the face 'Made in France' They sit in die cast holders about 70mm deep. The clocks themselves are approx 47mm deep from the bezel to the back. Can I fit the alloy type holder for the shorter clocks.
My bike is fitted with an anti wet sump tap, when the bike is left with the tap off, I am losing oil through the front of the primary case. Should I simply remove and replace the gasket or use a gasket sealant.
I would also like to remove the chain lube feed, what is the easiest way to achieve this?
I apologize if these questions have been asked before.
Thank you in advance.
Mark
Speedo and tacho holders and oil
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Mark, when you say "left…
Mark, when you say "left with the tap off", do you mean "with the oil supply to the engine cut off" (i.e. tap shut)?
If so, and assuming that the tap itself is not leaking, then any oil loss from the primary chain case must be the result of either a defective chain case joint, or a dodgy seal (it's not a gasket, by the way; rather, a very long O-ring).
If not the O-ring, then either the inner case, which includes the channel in which the O-ring sits, is damaged, or there is a problem with the plain face on the outer case. A hot-air gun and gentle hammering may sort the inner case. If the outer case, refacing the surface with emery paper or grinding paste on a sheet of glass should be possible.
Otherwise, if the leak is with the tap open then, as Peter Stand says, the crankcase may filling with oil which is then spilling over into the chain case through a defective crankshaft seal.
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Yes the shorter clock holders can be used, but you will see the underneath of the clocks themselves, you can tidy up the long holders by fitting the covers from the mk3
Anti wet sump tap is an engine wrecker waiting to happen. It also looks like the crankshaft oil seal is U/S, sump filling with oil and leaking out the primary case/engine gasket.
The oil pump needs servicing (to close the clearances up) which will cut down the wet sumping.
Chain oiler can be blanked off at the oil tank
I couple of months ago i completed an overhaul of a wet sumping ES2 that had a new oil pump fitted. After stripping the pump and measuring the clearances i found the feed gears to be .001" shorter than the case. Closing the clearance up has resulted in the wet sumping being virtually eliminated.