|
Wendell,
Ed Anderson had a problem where the oil pump
Wooodruff key wasn't in the keyway. The drive was just taken by the
friction of the tensioned nut. Worked for a while. Sooner or
later, the sprocket will slip on the shoulder of the pump shaft. The
symptom is intermittent loss of oil pressure, which gets worse as the
sprocket wears on the shaft shoulder.
So, as I said in the post below, always
make sure that the key is actually in the keyway before fitting to nut &
lockwasher. The key itself is very tiny, and it requires a bit of
juggling to get it in the keyway in the sprocket. I normally gently stake
the keyway in the shaft so that the key can't slip out.
Hope this makes sense!
Leon
----- Original Message -----
Sent: Saturday, January 08, 2005 3:18
AM
Subject: [FlyRotary] Re: Some things to
check was Re: [FlyRotary] Acceptable oil pressure
----- Original Message -----
Sent: Thursday, January 06, 2005 3:05
AM
Subject: [FlyRotary] Some things to
check was Re: [FlyRotary] Acceptable oil pressure
Apart from a leaky pickup gasket, or if
the bolts were left finger tight (you have to be REAL careless to have this
happen) it is possible to have a fractured oil pickup pipe
(rare but it can happen), I've also seen blokes leave the oil pump
bolts loose (again usually finger tight!), or not stake the oil pump
shaft lock washer (just carelessness), or the Woodruff key wasn't
located correctly (Ed's issue! - REAL easy to do - happens to me about every
second or third engine). Sometimes it takes two or three goes to
get it in. They are real small & fiddly You must ALWAYS
double check - use strong light or a torch to make sure that you can
see the key is in the correct place once the sprocket in on
on the shaft, before fitting the nut & lockwasher.
What would the symptom be if this
wasn't done right? Don't remember having a problem getting the oil pump
reassembled, can't be sure now if all was done correctly.
Wendell
|