[AT] Slight Oil Leak

[oldiron62 at gmail.com]

 Like Charlie said retorq the head bolts, and hope the rod caps and mains 
dont need the same.
We have an IH 504 and it always leaked a bit of oil on the oppisite side 
from manifold, at the head gasket. It was so small of a thing that I never 
worried about it.
This is after rebuild of engine, now it has 600+ hours on the rebuild. No 
other problems yet and it gets run hard all day in 4th gear just working the 
T/A and running 2100 rpm`s mowing hay, raking, hauling bales in ect. It got 
a break this year, a good neighbor come and mowed raked an baled since my 
foots mashed.
But it does leak a bit at head not like your talking about though. I am 
hoping for rain so that maybe there will be something to mow in October 
before frost.
Dont look good for rain here.  Leroy, retorq or maybe you should get ahold 
of whoever did the rebuilding surely they back their work ???
Kevin Mosier
----- Original Message ----- 
From: "LeRoy Price III" <leroy_price3 at hotmail.com>
To: <at at lists.antique-tractor.com>
Sent: Wednesday, August 29, 2007 3:45 PM
Subject: Re: [AT] Slight Oil Leak


>
> It wasn't until I torqued down the manifold bolts for the leak to start in
> the area of the head to block seal.  It was alright until then.  The other
> thing is that this was OK last year when I got it back from the rebuild.
>
> Why does this give me a bad feeling and I wanted to get rid of the darn
> thing.  I gotta get out of this hobby.
>
>
>>All of the oil that is in the heads of an Allis B engine are pumped up
>>there
>>externally and into a port on the distributor side of the engine.  From
>>there the oil flows though a channel in the head casting and up through 
>>one
>>of the rocker arm studs that is hollow.  It then runs down the inside of
>>the
>>rocker arm tube, over the valve train and then it drains back through 
>>holes
>>in the head back to the inside of the block.  There are no oil passages in
>>the head on the manifold side.
>>
>>You need to pull the valve cover, check for leaks on the valve cover
>>gasket,
>>check to see that the oil is flowing back through the head into the block
>>without ponding up in the top of the head and re-torque the head.  If you
>>don't find the problem in one of those places then you have a head gasket
>>problem, a warped head or some problem with the top of the block.  There 
>>is
>>no way that I can think of for oil to come out through the manifold stud
>>holes.  If enough oil is getting by the oil rings to get into the manifold
>>and flow out around the manifold gasket then you should be getting oil
>>blowing out of the exhaust pipe.
>>
>>Charlie
>