Diesel Fuel in the Valley

[davidkerryedwards]

Did you see this post over at the Cat RV forum. It doesn't sound as if a lot of
parts need to
be removed:

Pat,
> > The seal was bad under the top cover, There's not supposed
> > to be any
> > fuel visible if you take your fuel shut off solenoid off
> > and look
> > down in the hole.Mine had fuel in it, almost full. What
> > happens is
> > that either the throttle shaft seal, or the seal under the
> > cover
> > starts leaking a little air. The injector pump is also the
> > fuel pump
> > and sucks fuel from the tank. If there's an air leak, its
> > easier for
> > the air to come in than the fuel, then you start pumping
> > air to the
> > injectors. I had already changed the throttle shaft seal
> > two weeks
> > ago, its the one that usually goes bad first. Its also the
> > hardest
> > to get to. You have to remove the intake and at least one
> > injector
> > line to get to it. The top cover comes right off without
> > removing
> > anything. It's an easy enough job to do yourself, You just
> > need the
> > parts. The mechanic said they usually last about 12-15
> > years.
> > When they install a seal on The throttle shaft they also
> > install a
> > check valve in the governor housing to reduce the pressure
> > on the
> > seal.
> > Lee

Kerry

--- In WanderlodgeForum@yahoogroups.com, "davidkerryedwards"
wrote:
>
> I couldn't find it on a google either. I seem to recall that only a small
cover with a
couple
> of bolts had to be removed but I may be wrong. I can't find the procedure in
the service
> manual I have either.
>
> Kerry
>
> --- In WanderlodgeForum@yahoogroups.com, "pattypape" wrote:
> >
> >
> >
> > Kerry,
> >
> > Thanks for the response,
> > I Googled and posted on a few sites. I have not gathered enough
> > information to tackle this job myself. I could not find the site,
> > with pictures of how to replace the throttle rod seal.
> >
> > I have a parts blow-up picture of the injection pump. If the rear
> > cover is removed a lot of part can fall out, push rods, springs,
> > governor weights etc, It looks easy enough, seven bolts, but I am
> > hesitant to try this with out experience.
> > I wish I had an old injection pump to disect.
> >
> > Bill 88 FC Michigan
> >
> >
> > -- In WanderlodgeForum@yahoogroups.com, "davidkerryedwards"
> > wrote:
> > >
> > > If this is the seal I am thinking of, I ran across an account
> > somewhere of this same
> > > problem, although the symptom was stalling at low speeds as air
> > was getting sucked into
> > > the system. The page had a whole series of pictures showing the
> > owner of the coach
> > > replaciing the seal. Perhaps if you google it, you could find
> > it. It's been a number of
> > > months since I looked at the site, but my recollection is that the
> > repair was not that
> > > complicated, just a little time consuming since it involved
> > removing the intake manifolds.
> > > The injection pump was not removed but there was a kind of cover
> > on the top of the pump
> > > (?) that was removed to access the shaft.
> > >
> > > Kerry
> > >
> > >
> > > --- In WanderlodgeForum@yahoogroups.com, "pattypape"
> > wrote:
> > > >
> > > > Hi All,
> > > >
> > > > I gatta a problem.........
> > > >
> > > > After some detective work and searching the archieves,
> > > > I think the throttle control shaft seal on the
> > > > injection pump is leaking.
> > > >
> > > > I have a drawing of this area, It looks simple enough, about
> > seven
> > > > bolts, a few gasket and a seal. Inside the pump there is a
> > control
> > > > shaft and a riser shaft. They are aligned and clipped onto the
> > > > throttle shaft.
> > > > Not sure, I want to take this apart????????????????
> > > >
> > > >
> > > > Had anyone replaced the throttle shaft seal on the injection
> > pump?
> > > > Has anyone removed the rear cover of the injection pump?
> > > > Does the injection pump need to be removed to access this rear
> > cover?
> > > >
> > > >
> > > > Any help or advice appreiciated.
> > > >
> > > > Bill 88 FC, weeping fuel
> > > >
> > >
> >
>