Re: [Chrysler300] 300H Fuel problem - answer

[Robert Merritt <okbobwynmer@xxxx>]

Patrick,
Sorry I left this unexplained. The shaft that drives
both the distributer and the oil pump is itself turned
by a gear that meshes with a gear on the camshaft.
When I had a shaft worn where it runs in the bushing
and replace it with the heavy-duty shaft, instead of
trashing the worn unit I grind all the teeth off so it
can be slipped back thru the new bushing and the lower
end engaged with the oil pump. Then the slot that the
distributer shaft fits in is where the screwdriver is
used to turn only the shaft and oil pump, since the
gears are not there to mesh with the cam gear.By
turning the shaft in the direction it normally turns
the oil pump is the only part of the engine working.
When the oil guage shows pressure, you know the
bearings are pre-lubed and the engine will need to be
timed before the distributer is installed. The new
shaft with the teeth needs to be installed properly
according to the instructions in the shop manual. It
needs to be located and spiraled into place so that
the slot the distributer tang fits in is pointing
straight forward with the engine on top dead center on
the firing stroke on #1 cylinder. If you don't have a
shop manual, borrow one or get someone to zerox the
pages since this is critical to being able to time the
distributer correctly.
I hope I haven't confused the issue more: I'm sure if
you can get ahold of a shop manual and look at the
section on distributer timing, figure 35, page 9-21 in
my 63 book, you can figure out what I'm trying to say.
Okie Bob
--- patrick grant <gran102@xxxx> wrote:
> i dont quite follow you on the part about grinding
> off the gear teeth does this accomplish the same
> thing as the flat screwdriver to turn the oil pump
> only. i wish you lived next door to me because i can
> tell you really know your stuff. maybe a followup
> lesson to the group on having to turn the engine 180
> degrees to get both sides of the engine and how do
> you know the right spot to stop. just wait for
> oil pump to develop pressure??thanks, pat grant
> ----- Original Message ----- 
> From: Robert Merritt 
> To: Warren R Anderson 
> Cc: chrysler300@xxxxxxxxxxxxxxx 
> Sent: Thursday, May 29, 2003 2:21 PM
> Subject: Re: [Chrysler300] 300H Fuel problem -
> answer
> 
> 
> Warren,
> I agree that the bushing should be replaced when
> rebuilding. In an already installed engine, I pull
> the
> distributer, and check for excessive side play in
> the
> shaft and pull it out and see if the shaft shows
> wear
> just below the gear and if so, replace the shaft
> at
> the same time the bushing is replaced and
> burnished. I
> always replace the shaft with the heavy-duty
> Direct
> Connection shaft. The hex end that drives the oil
> pump
> is machined instead of a piece of hex stock
> pressed
> into a hole on the lower end of the shaft which
> can
> turn and cause oil pressure loss. The best thing
> to do
> with the old shaft is grind all the teeth off the
> gear
> so it can turn free without touching the camshaft
> gear
> and use it to pre-lube the bearings without having
> to
> turn the engine. A flat screwdriver chucked in a
> drill
> to turn the oil pump the same rotation as the
> distributer rotation marked on the intake manifold
> untill the guage shows pressure
> I don't do this on a fresh engine that I KNOW was
> assembled with proper engine assembly lube, but if
> i'm
> going to try to stsrt an engine that I don't know
> how
> long since it has been run, I sometimes pre-lube
> to be
> safe. I just hate to hear rods rattle until oil
> pressure picks up.
> --- Warren R Anderson <wranderson@xxxx>
> wrote:
> > 
> > >rocker arm shafts. The only oil supply to the
> > rocker
> > >arm shafts comes from the #4 cam bearing and is
> not
> > >full pressure but is an intermitent supply as
> holes
> > >drilled thru the camshaft journal line up with
> > holes
> > >in the cam bearing. Have the cam bearings been
> > >replaced? If the holes in the bearing aren't
> lined
> > up
> > >with the holes in the block it can louse up the
> > upper
> > >end oiling. The chatter you hear could be
> rocker
> > arms
> > >rattling on the shaft instead of being
> cushioned by
> > >oil.
> > 
> > 
> > There is a short shaft between the distributor
> and
> > the fuel pump. This shaft
> > runs in a flanged bronze (?) bushing that is a
> press
> > fit in the block (IMHO
> > should always be replaced when engine is apart).
> It
> > is not pressure
> > lubricated. If lube oil flow is not properly
> > directed in the upper valve
> > train area, this bushing will fail. We have been
> out
> > of town riding north of
> > the Grand Canyon for the last 5 days so may have
> > missed notes on this
> > subject. The Merritt Message I did find
> otherwise
> > covers it all very nicely.
> > 
> > BTW Chrysler had some problems with this bushing
> in
> > there SB V8's & possibly
> > some V6's in Dakota applications just a few
> years
> > ago.
> > 
> > Warren Anderson
> > Sedona,AZ
> > 
> > 
> > 
> > 
> 
> 
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