I'm working on getting the engine unstuck from rust, and have pulled the head , and came across an interesting situation . Is the oil passage that goes up to the rocker shaft supposed to be connected to the oil passage in the side of the block , the one with the little recessed hex head plug right below the dist. cap ? I filled the hole in the top of the block with oil , and it gradually drains away , but poking down with a wire , the hole isn't long enough to reach the passage in the side of the block. Is there a restrictor in the vertical part ? Or another direction that the oil comes from ....??? Thanks, Dale
- Thread starter Dalex
- Start date
Janicholson
Well-known Member
That passage goes to a cam journal. As the cam turns, a pulse of oil goes to the upper end.
The oil drains slow because it is not lined up at this time. If it were, it would drain faster, but not just flow, as the passage in the cam still has places to go.
There are no cam bearings in it, and IH never put them in this series. I have never seen a worn out cam journal or block in that series engine. Jim
The oil drains slow because it is not lined up at this time. If it were, it would drain faster, but not just flow, as the passage in the cam still has places to go.
There are no cam bearings in it, and IH never put them in this series. I have never seen a worn out cam journal or block in that series engine. Jim
P and R Pete
Member
Dale, I'm not sure if this is the info for which you're looking, but just in case...
Oil comes up to the rocker shaft through a passage in the block, then goes through a short drilled stud, and then up through a passage in the bracket that supports the rocker arm shaft.
Here's an exploded view...
...where #22 is the drilled stud, identified in my book as "Stud, valve lever shaft oiler", and #18 is the part of the bracket that carries the oil to the shaft, identified as "Bracket, valve lever shaft, center".
Here's a picture of my "#22" stud, of which I took a picture when I rebuit my engine. What I cannot remember is whether the side hole in the stud has to be particularly 'oriented' when it's put back together so that the oil gets to where it's needed.
I only realized what it was when I discovered I had to replace mine because the threads were stripped.
Hope this helps.
Oil comes up to the rocker shaft through a passage in the block, then goes through a short drilled stud, and then up through a passage in the bracket that supports the rocker arm shaft.
Here's an exploded view...
...where #22 is the drilled stud, identified in my book as "Stud, valve lever shaft oiler", and #18 is the part of the bracket that carries the oil to the shaft, identified as "Bracket, valve lever shaft, center".
Here's a picture of my "#22" stud, of which I took a picture when I rebuit my engine. What I cannot remember is whether the side hole in the stud has to be particularly 'oriented' when it's put back together so that the oil gets to where it's needed.
I only realized what it was when I discovered I had to replace mine because the threads were stripped.
Hope this helps.
Janicholson
Well-known Member
You are welcome! Jim
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