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Roll pin in camshaft
Posted: Tue Dec 10, 2019 9:32 am
by veloduke
Looking at the camshaft in my 250 - I can see that it is hollow, and there is a roll pin (pasador elastico) pushed in to the end at the bevel drive side.
Doesn't seem to do anything apart from act as a restrictor of some kind.
Does anyone know what it is for?
Re: Roll pin in camshaft
Posted: Tue Dec 10, 2019 10:37 am
by Rhys
Hi, My 350 cam is the same. The Vento has an oil pressure light on the dash, and a pressure switch through the cam carrier. I am uncertain, but I believe it`s purpose is to create enough back-pressure to activate the pressure switch. Probably has the secondary benefit of forcing oil onto the rockers.
Cheers!
Re: Roll pin in camshaft
Posted: Tue Dec 10, 2019 5:02 pm
by Bevel bob
Its a fairly common fitment to force a bit more oil to the cam lobes. The bevel gears get a fair amount of oil from splash and through the bearing and are so long lived that they don't need the open oilway. I did mine many years ago and it works well.
Re: Roll pin in camshaft
Posted: Tue Dec 10, 2019 5:15 pm
by veloduke
Ok that's great thanks - makes sense now!
Re: Roll pin in camshaft
Posted: Wed Dec 11, 2019 4:20 am
by linker48x
I assume the hole is 5mm--do people use a 3/16 roll pin (which is MUCH easiser to find), or ??
Re: Roll pin in camshaft
Posted: Wed Dec 11, 2019 8:01 pm
by Jordan
You could press or Loctite in a short piece of 5mm rod with a hole in it, or a flat filed onto its side?
Re: Roll pin in camshaft
Posted: Thu Dec 12, 2019 3:47 pm
by Gianni