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Author Topic: Clutch Cover Differences: dip-stick channel and oil pressure relief valve  (Read 135 times)

patentgeek

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Clutch Cover Differences: dip-stick channel and oil pressure relief valve
« on: August 27, 2017, 10:28:01 pm »
My Nuovo Falcone project came with a complete engine installed and bits of an engine that threw a rod, including a spare clutch cover.

While detaching the camshafts from both clutch covers, I noticed that they have different part and casting numbers.  One has part #10001401 with casting number FLAM RW 1525 (from the dead engine) and the other has part #10001400 and casting number FLAM RW 15 5 (installed in the bike).  Upon closer inspection, I noticed a couple of differences.

First, on #10001401 the dip-stick channel is cast whereas on #10001400 it is machined.

Second, on #10001401 the oil pressure relief valve is surrounded by a tube that is open at the end, which I assume intended to flow oil in a particular direction.  This tube interferes with the small metal plate that is screwed to the case directly above the cam, so there must have been no metal plate on the dead engine cases.

Otherwise the clutch covers seem identical.  See the link below for reference pics.

https://1drv.ms/f/s!AuFSdkt2JFpfhf8Xy5wcOOL3zzvEcQ

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banquo

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Re: Clutch Cover Differences: dip-stick channel and oil pressure relief valve
« Reply #1 on: August 30, 2017, 11:46:59 pm »
The machined dipstick holder looks something of an afterthought, doesn't it? maybe from a very early model.
If you go to thisoldtractor, you'll find the early and later parts books, which may throw some light on it. Lubrication has always been an issue, and it's possible that the weir to distribute the oil was not fitted on the earliest models, hence the fouling?
This is just a guess, but if the early parts book doesn't show the weir, that would confirm it.
(by the way, the plug you mentioned in your other post is shown in the gearbox section of the Parts Book)
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