[AT] Super MTA oil pressure

charlie hill chill8 at cox.net
Wed Mar 17 18:26:40 PST 2004


Hmmmm I hope you didn't spin that cam shaft bushing.

Charlie
----- Original Message ----- 
From: "D. Day" <ddss at scppd.net>
To: "Antique tractor email discussion group" <at at lists.antique-tractor.com>
Sent: Wednesday, March 17, 2004 9:23 PM
Subject: RE: [AT] Super MTA oil pressure


> On the M, a portion of the oil delivered to the center camshaft bearing is
> metered through a slot in the camshaft journal and is carried through a
> passage up to the rocker assembly. I believe the problem lies somewhere in
> that passage, although it does not appear to be plugged.
>
> I'll do as you suggest and see what happens.  Any idea why I'd be having
> such high pressure?  It's a new gauge and it reads about the same as the
old
> one, so I would guess 70lbs accurate.
>
> Dick
>
> -----Original Message-----
> From: at-bounces at lists.antique-tractor.com
> [mailto:at-bounces at lists.antique-tractor.com]On Behalf Of Robert L.
> Holtzer
> Sent: Wednesday, March 17, 2004 7:56 PM
> To: Antique tractor email discussion group
> Subject: RE: [AT] Super MTA oil pressure
>
>
> A good idea to do so.  Nothing seems to go back exactly as it comes off.
>
> Given the oil pressure (assuming your gauge is OK) it is difficult to
> believe priming is necessary.  I'd be more concerned about obstructed oil
> passages or perhaps gasket (frankly I can't recall about the rocker arm
> stand gasket).  If you pull the rocker arms, I'd suggest cranking the
> engine a bit (preferably with sparkplugs out) -- oil flow should be
evident
> within a few cranks.
>
> Bob Holtzer
>
> At 09:00 AM 3/17/2004 -0600, you wrote:
> >If I remove the rocker arm assembly to begin checking the oil passage,
will
> >it have to be re-adjusted when it's put back on?
> >
> >Thanks for the help,
> >
> >Dick
> >
> >-----Original Message-----
> >From: at-bounces at lists.antique-tractor.com
> >[mailto:at-bounces at lists.antique-tractor.com]On Behalf Of charlie hill
> >Sent: Wednesday, March 17, 2004 7:49 AM
> >To: Antique tractor email discussion group
> >Subject: Re: [AT] Super MTA oil pressure
> >
> >
> >Dick,  I can't tell you about the M engine but on my Allis engines you
wish
> >you were not standing near them.  They sling oil everywhere.  No gussher
> but
> >more like a wet dog shaking.  Sounds like you have an oil passage cloged
on
> >the way to the valve train.
> >
> >Charlie
> >----- Original Message -----
> >From: "D. Day" <ddss at scppd.net>
> >To: "ATIS-New" <at at lists.antique-tractor.com>
> >Sent: Tuesday, March 16, 2004 9:32 PM
> >Subject: [AT] Super MTA oil pressure
> >
> >
> > > We just put the rebuilt head on the M and fired it up without the
valve
> > > cover in place so we could make sure oil is circulating through the
> rocker
> > > assembly.  How much oil should we see?  The engine oil was totally
> drained
> > > about a week ago. Tonight we filled it up and put a new filter on
prior
> to
> > > starting it.  We ran it a few minutes and didn't see a significant
> amount
> >of
> > > oil.
> > >
> > > Should we see a gusher or a trickle?  Since the engine sat dry for so
> >long,
> > > will it take a while before oil reaches the head?  Oil pressure hit
> about
> >70
> > > the second it was started and held there until we shut it off.
> > >
> > > Any advice would be greatly appreciated!
> > >
> > > Dick
> > >
> > > Dick Day Software Services
> > > 83712 552nd Avenue
> > > Norfolk, NE 68701
> > > 402/379-1606
> > >
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