Why the engine replacements?

[Gregory OConnor]

Ron, good point, a hydrolic trans retarder , exhaust retarder, or
valve retarder to slow a vehicle down are all tools used to keep the
vehicle incontrol and engine from spinning apart. An operator error
at 500,000 miles is the same as one at 5,000 miles. Lack of
knowledge and operator skill is a big cause of premature engine
failure. As a rule I decend a hill no more than 10mph faster than I
could climb the same hill.
Greg
94pt40

--- In WanderlodgeForum@yahoogroups.com, "ronmarabito2002"
wrote:
> Greg:
>
> You have no or negligable back pressure in a diesel. This
works
> fine on a gasoline powered engine, but not a diesel. You need a
> retarder of some sort.
>
> R.E. (Ron) Marabito, Dallas, TX 92WB40
>
> --- In WanderlodgeForum@yahoogroups.com, "Gregory OConnor"
> wrote:
> > Phil you and many of the operators that read this forum know
about
> > over rpm damage but I think it deserves to be pointed out that
you
> > can cook a motor by over rpming "r'ing" on a down hill with your
> > foot off the fuel. by using back pressure in the motor and a
> lower
> > gear I never let the r's go over 2,000 before I ride the brakes
> > slowing the r's to 1,800. on a down hill I flip the fan overide
> > switch which puts a load on the engine and helps to keep it in
the
> r
> > range. One other reason I think the engines are swapped inplace
> of a
> > rebuild or inframe repair is ;A coach sold with unknown engine
> probs
> > is sold so low $ that a reman swap is cost effective and gives
the
> > new owner peace of mind. I run the limits on oilchanges, I dont
do
> > sampling because I dont want to spend the $ or see the results, I
> > stopped using additives after Rogain failed me back in the 80's.
> It
> > may be wise to do all the over maintaining things but as Jeff
> Miller
> > points out doing the right maintainance at the proper time is
> key.
> > Greg
> > Bald in California
> >
> > --- In WanderlodgeForum@yahoogroups.com, "Christina Corpus"
> > wrote:
> > > Greg,
> > >
> > > I agree with you that low mileage motors probably weren't
> replaced
> > > because they were worn out. More a matter of something
breaking
> due
> > > to misuse.
> > >
> > > Lack of knowledge on how to operate a heavy diesel powered
> vehicle
> > > (over- taching the RPM's or lugging it down) results in an
> expensive
> > > lesson. Good reason to read the operator manuals.
> > >
> > > When my wife and I are looking at cockpit photos of units for
> sale,
> > > she kids me about, "it's got all of the guages you want." I
> tell
> > her,
> > > "the more, the merrier." All those guages tell me what is
> happening
> > > under the dog house and floor boards.
> > >
> > > Keep the R's up and temp down.
> > >
> > > Phil
> > >
> > > --- In WanderlodgeForum@yahoogroups.com, "Gregory OConnor"
> > > wrote:
> > > > Phil, I just bought a 94pt40 last month and started looking
> two
> > > > months prior. I too found it unusual that low mile birds had
> new
> > > > engines. I have several dump trucks with over 400,000 and
> drive
> > > them
> > > > hard off road and they have the orig powerplants. The 3208
> Cats
> > > are
> > > > not a sleve cylinder engine and an inframe is not possible
but
> > with
> > > > such low miles I dont think they ever get worn out. I think
> > > > operators are over tacking the Cats or lugging them and
burning
> > > them
> > > > up. The 4 and 5 allison gives less room for mistakes then a 10
> > > speed
> > > > manual shift. I have a 8v92 detroit and let me tell you that
I
> > have
> > > > alot to learn as I try to keep the r's up and the temp down.
I
> > > look
> > > > at the gauges and once in a while I look at the road. It is
> hard
> > > to
> > > > climb a hill and keep the trans from down shifting to a lug
> with
> > > only
> > > > 5 speeds to use. I think the detroits were just driven
wrong.
> > Cant
> > > > go wrong if you get a bird from Miller coach works or Randy
> > Dupree,
> > > > wish I did.
> > > >
> > > > Greg O'Connor
> > > > 94pt40 CAlifornia
> > > >
> > > >