[AT] cub / prime oil pump

[George Willer]

Walt,

None of us has experienced all the possible conditions that may come up... 
even an advanced expert like you.  I DID lose a set of bearings in an engine 
that failed to prime after setting all winter.  Luckily, I was able to get 
replacement bearings and rebuild the pump and get the engine running 
properly when I needed  the tractor urgently.  It's been performing 
flawlessly for the dozen or so years since the event.

Excuse me, but I think many of us understand how an engine works.  The old 
wives' tale is that we should take advice from Walt!  :-(

George Willer

----- Original Message ----- 
From: "Ronald L. Cook" <rlcook at pionet.net>
To: "Antique tractor email discussion group" <at at lists.antique-tractor.com>
Sent: Thursday, June 09, 2005 12:14 PM
Subject: Re: [AT] cub / prime oil pump


> It is probably a good thing you don't overhaul my aircraft engines.
>
> Ron Cook
> Salix, IA
>
>>Mike the bearings in the engine have residual  oil in them the engine will
>>run for quite sometime without oil pressure. When  you  tear down an 
>>engine even
>>one that has set for a long time you will  find that the bearing are still
>>covered with oil. The manufacture has built this  into the engine because 
>>they
>>know that people will leave their vehicles set for  long periods and then 
>>jump
>>in and hit the starter. It only takes a few seconds  for a properly 
>>working
>>oil pump to get up to pressure.
>>I have heard this  priming the oil pump by all kinds of methods because
>>people have been told by  others who don't understand how an engine works 
>>that they
>>will destroy the  bearing if the engine doesn't get oil pressure 
>>immediately,
>>but this is just  another old wives tales. Do you think that the car
>>manufactures prime every pump  before they start your new car engine. Not 
>>on your
>>life. They coat the bearings  with oil before installing them and this is
>>sufficient to start the engine for  the very first time.   I have rebuilt 
>>many engines
>>in my life and have  never primed a pump yet and have never lost a bearing
>>waiting for the oil  pressure to come up.
>>
>>Walt Davies
>>Cooper Hollow Farm
>>Monmouth, OR  97361
>>503 623-0460
>
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