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Do thse valves look dry?

J

JBlavl

Member
I think the valve area looks a little dry for having been run easy for 6 hours now. (I just rebuilt this Massey Ferguson 50). I haven't put any load on the tractor and the oil pressure is generally 50ish psi, depending how warm it is. Does this look normal or is there something wrong? I compared it to the valve area of my Super C and that has much more oil in this area, but it also hasn't been torn down recently either.
Any insight is appreciated. Thanks.
IMG_2662.JPG
 
are you sure you have the oil feed bolt in the right place ??? it ahould be in one of the brackets holding the tap train down as to which one i'm not sure been a long time ago i worked on a 50
 
after thinking i don't think it feeds up a bolt but up the base of the bracket small hole next to the bolt. why don't you just start it up with the cover off and see if it's getting oil after it runs a little you should see dripping of the rocker shaft
 
me again if you are not getting oil then you must have put the head gasket in wrong it only has one hole for the oil to get to the rocker shaft and it must be lined up with the hole in the block. if you are not getting oil pull the rocker shaft and find the hole in the head and drop a wire down and see if to goes past the head-block line if it dose not go deeper the the line your head gasket is in wrong. done now
 
Did you use an I.T. manual when you assembled the valve train ?

On a model 65 the I.T. manual is wrong on installing the rocker shaft. It needs to be rotated 180 degrees. The oil ports in the shaft need to line up with a groove in the rocker arm. If it is not right you won't get much oil out of the rocker shaft.
 
I did use an IT manual. Can you elaborate on what is incorrect. I don't have it sitting right in front of me at the moment but I'll try to go read what it says shortly. I really appreciate any insight this is great info, thanks. How much oil should be coming out of them. If I run it without the cover in place shouldn't I see it gushing out pretty good?

Josh
 
Josh,

I don't have my IT manual in front of me now either, but I am looking at my genuine Massey service manual. It is for a model 65 and I am looking at specs. for a G-176 engine.

Direction of Oil Holes in Shaft.............Toward push rods

I am sure the IT manual said toward valves. Since I had conflicting advice when doing my overhaul, I had to figure it out myself. After looking at the parts I concluded that the Massey manual was right.

When I set the clearance on the valves with the engine running, I wasn't getting a bath but you should see some oil droplets bouncing around.
 
So I had a chance to look at the IT manual and like it says the holes go towards the valves rather than the push rods. I looked at the diagram and see the shaft you are talking about. Problem is I never took the rocker arms apart. I merely took them off the head till I changed the valves and springs and put them back on after I reinstalled the head. So I never even looked at that shaft. Is it possible to have reoriented itself even though I never touched them other than taking them off and on the head? Thanks again guys.
 
I doubt that the rocker shaft could have rotated from your description. However, how do you know it was right before you removed it ?

That tractor is old and unless you bought it new and know its' history there could have been lots of people wrenching on it by now. Only one sure way to know---look. I think you should be able to loosen the adjuster on one valve enough to get it out of the socket on the pushrod. Then just slide the rocker sideways, compressing the spring on the shaft, and find the oil port in the shaft.

Let us know what you find.
 
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