Re: Engine prelubrication


<t_dragonas@xxxxxxxxxxx> wrote in message
news:1153147233.817198.163070@xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx
I recently had an argument with an automotive technician (i am an
automotive service advisor) about engine prelubrication. As i have
thoroughly read Jack Erjavec's excellent book "Automotive Technology, A
System's Approach" i tend to believe that you have to prelubricate a
newly rebuilt engine prior assembling it again. Technicians here have
the opinion that engine prelubrication is not something very important
for the reliability of the rebuilt engine. I would be happy to read
your thoughts on that. Thanks!


Yeah, Jack is a great author of automotive books and I use his text in my
classes, but there are some things that are outdated. I used to think you
were supposed to lap in a new valve with valve grinding compound, like it
says in the book, but I was recently informed by some of the experts here in
this forum that this is no longer done professionally. Perhaps some of those
guys who are overhauling engines for a living could clue us in on this as
well. I am curious to know what the industry standard is on that one as
well. I have been told that using a pressurized engine pre-lube machine
prior to start up is the way to go on a rebuild and the only reason to use
assembly lube is to preserve the engine's shelf life if it will not be put
into service soon after reassembly. Seems to me using assembly pre--lube
would be the best way to go though. It's been years since I actually taught
engine overhaul and back then we would use assembly lube, then we would use
a pressure pre-lube right before cranking the engine. I did it that way
mostly to teach both methods though.
I find it hard to believe anyone would advocate not using assembly lube or
pre-lubing the engine before start up. And what would be the advantage?
--
Kevin Mouton
Automotive Technology Instructor
"If women don't find you handsome, they should at least find you handy"
Red Green


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Relevant Pages

  • Re: Engine prelubrication
    ... automotive service advisor) about engine prelubrication. ... I have been told that using a pressurized engine pre-lube ... assembly lube, then we would use a pressure pre-lube right before cranking ... Automotive Technology Instructor ...
    (rec.autos.tech)
  • Re: Engine prelubrication
    ... automotive service advisor) about engine prelubrication. ... I have been told that using a pressurized engine pre-lube ... Automotive Technology Instructor ...
    (rec.autos.tech)
  • Re: Engine prelubrication
    ... engine overhaul and back then we would use assembly lube, ... a pressure pre-lube right before cranking the engine. ... grease because it is "stringy" and can plug up an oil pickup tube. ...
    (rec.autos.tech)