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35 deluxe oil passage

M

MrJDMan80

Member
Dad got a Massey Ferguson 35deluxe this past
spring, a tractor he's always wanted. It's a
gas tractor with a z134. The engine was
overhauled by the previous owner shortly
before we bought it. Ran great all summer
but developed a miss this fall. We parked it
to be addressed later (now). Compression
test was all over the scale on #4 so we
pulled the valve cover. First thing we saw
was NO OIL on top of the head. The rockers
are shot. The valves and guides are shot.
We started tracing backwards the oil path.
OIL is supplied from the rear cam journal,
but we aren't getting oil. Pulled the cam
and can blow through the passage.
Can someone tell me what I'm missing?
Tractor had great oil pressure! But what
feeds the rear cam and in turn, the rocker
assembly?
Tim
a248472.jpg

a248475.jpg
 
Short answer-head gasket installed upside down,long answer-oil galley is front to back on right hand side of block,at the back of the block the galley is cross drilled left to right and supplies the rear cam journal AND upward to cylinder deck to supply pressure to rocker shaft. Joe
 
Rocker assembly has oil coming inside(tube) and has holes for oil to come out to oil rocker arms. Check and see if they are stopped up. Each rocker arm can be pulled back from spring to check holes. Also tube may be turned(assembled wrong) upside down. Also the tube will have cork inside tube(end of tube) with cotter key keeping cork in place. It will be at rear assembly so oil will stay in tube when tractor is going up steep grade. Then oil will be pushed toward front engine and oil rocker assembly.
 
NOT the gasket. Wish it was that easy. So the oil is fed to the cam, then through the journal? Hence the hole drilled through the cam? That hole is clear so could be a blockage in the block? I would think that if the rear journal wasn't getting oil out would have galled or seized.
 
I'd say the oil passage going to the head has something blocking it (if you have good oil pressure, but nothing coming out the hole). I would stick a wire down the oil passage, and then shoot some of your favorite penetrating oil down the oil passage. Then see if any oil comes up when you crank it over.


The z134 uses a bypass oil filter system the filtered oil goes back into the oil pan instead of through the engine (full flow). I did this to my z134 when I had it apart, I'm pretty happy with how its working out (scroll down to the last post http://forums.yesterdaystractors.com/viewtopic.php?t=1299663 ).
 
I am with Jersey Joe. The oil is suppose to go topside under pressure from the rear main bearing. IF... a wrong bearing was installed there, or the right bearing installed wrong- so's the holes and passages don't line up, no oil will get to the valve rocker at all... and that is what you are discribing...
 
Thanks guys! You have confirmed my thoughts. I hope it's as easy as the brg halves flipped, and the side with the holes in the cap.
I agree Tony! Head up the rear!
 
I have had the same problem good oil pressure no oil to rocker arm. Pulled cam no scoring on rear journal seems to have oil there. I did notice that the oil hole in the rear cam journal is not located in the same location as the old cam(it is closer to the edge of the cam)could this prevent the oil from getting to the head.Maybe the hole never lines up.
 
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