[AT] Super MTA oil pressure

Robert L. Holtzer rholtzer at earthlink.net
Thu Mar 18 07:39:32 PST 2004


If a spun cam bearing is the problem, I'd want to look at the entire 
engine.  Why would the bushing spin?  Something seizing the cam/bearing 
interface?  Is the cam in decent shape, etc., etc.?

Bob Holtzer

At 09:23 AM 3/18/2004 -0600, you wrote:
>That was an option we talked about last night. I thought maybe we could put
>a T on the back of the oil pressure gauge and feed it off of that.  Any
>reason to believe that wouldn't work?
>
>-----Original Message-----
>From: at-bounces at lists.antique-tractor.com
>[mailto:at-bounces at lists.antique-tractor.com]On Behalf Of Robert Brooks
>Sent: Thursday, March 18, 2004 8:56 AM
>To: Antique tractor email discussion group
>Subject: Re: [AT] Super MTA oil pressure
>
>
>Dick;
>
>On Y block fords we used to run an external oil line up to the rocker arm
>assembly.
>
>It didn't look real pretty, but you got lots of oil up there.  Maybe an
>option if you don't want to pull the tractor apart.
>
>Bob
>
>
>At 09:28 AM 3/18/04 -0500, you wrote:
> >I'm not familiar with that engine Dick but I suspect it means taking the
> >block to a machine shop.  There may be a way to do it in place.  I guess it
> >might be possible to remove the cam, re-drill the bushing and peen it into
> >place so it doesn't spin again but that is just a guess.  Opinions anyone?
> >Actually this would be a good question to take to the Farmall list.  I
>don't
> >know how many of those guys are hanging out here lately.
> >
> >Charlie
> >----- Original Message -----
> >From: "D. Day" <ddss at scppd.net>
> >To: "Antique tractor email discussion group" <at at lists.antique-tractor.com>
> >Sent: Thursday, March 18, 2004 9:18 AM
> >Subject: RE: [AT] Super MTA oil pressure
> >
> >
> > > Will that be a major job to get to and fix?
> > >
> > > -----Original Message-----
> > > From: at-bounces at lists.antique-tractor.com
> > > [mailto:at-bounces at lists.antique-tractor.com]On Behalf Of charlie hill
> > > Sent: Thursday, March 18, 2004 7:55 AM
> > > To: Antique tractor email discussion group
> > > Subject: Re: [AT] Super MTA oil pressure
> > >
> > >
> > > Sounds like that cam bushing has turned  Dick.
> > >
> > > Charlie
> > > ----- Original Message -----
> > > From: "D. Day" <ddss at scppd.net>
> > > To: "Antique tractor email discussion group"
> ><at at lists.antique-tractor.com>
> > > Sent: Thursday, March 18, 2004 8:06 AM
> > > Subject: RE: [AT] Super MTA oil pressure
> > >
> > >
> > > > The oil passage that comes up through the block and head is stone dry.
> >The
> > > > cam wasn't touched.
> > > >
> > > > Dick
> > > >
> > > > -----Original Message-----
> > > > From: at-bounces at lists.antique-tractor.com
> > > > [mailto:at-bounces at lists.antique-tractor.com]On Behalf Of Richard Fink
> > > > Sr
> > > > Sent: Thursday, March 18, 2004 5:50 AM
> > > > To: Antique tractor email discussion group
> > > > Subject: RE: [AT] Super MTA oil pressure
> > > >
> > > >
> > > >
> > > > Just a brain fart but was the cam bearings replaced.????? If so the
>oil
> > > > delivery slot {hole] may have been turned wrong. Oil only getting to
>cam
> > > no
> > > > further.
> > > > R Fink
> > > > PA
> > > >
> > > >
> > > >
> > > >
> > > > At 08:23 PM 03/17/2004 -0600, you wrote:
> > > > >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
> > > >#c5 >
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