Not getting oil to valve train on Massey 135

[SIMassey]

another thought! was the rocker assembly disassembled? My memory is vague on this but how is oil routed from the head to the rocker assembly? The rocker shaft is a tube that fills with oil and supplies each rocker with lubrication. does the oil come up one of the rocker shaft supports? is the rocker shaft properly positioned to allow oil to enter the shaft? I believe there are some sort of plugs on the ends of the rocker shaft held in with cotter pins. Did one of these plugs get pushed in too far blocking the oil passage from the head to the rocker shaft? I went back and reread your original post and from what you said is that when you cranked the engine with the rocker assembly off you still didn't get oil up through the head. If this is correct I would ignore the rocker assembly but still be sure its assembled properly. I'm beginning to lean toward the oil channel plug if you removed them. The rear should be alright otherwise you would have a flood of oil out the drain hole with the cotter pin. The front would just dump the oil back into the crankcase. This is all I can think of.

 

[SIMassey]

I may have to change my information about the plug in the oil channel. After looking at Agcopartsbooks it appears that the plug is outside the timing cover or under it. I am not sure and my tractor is 50 miles away so I can't look at it until the weekend. I hope to hear what you find because this has me stumped.