Posted by NolanJae on November 14, 2011 at 17:59:07 from (156.98.127.101):
If some of you remember my last couple posts I have some follow up info on my oil pump/timming issues. I pulled the oil pump and found that it is was worn in many spots. The most interesting find was when I removed the gear from the oil pump shaft which rides the cam shaft. I found that the solid steel pin used for holding the gear on the shaft was bent in an odd shape --a light v shape. Then I looked at the woodruff key for the same gear and it appeared when it was installed the key had too much stand out and the gear was forced on over the shaft anyways. It looks the key was holding the bottom of the gear out and the pin was forced in which bent the pin because the hole in the gear and shaft did not line up. This no doubt made the gear run kiddy wompus off the cam and wore out the dist/oil pump and the dist hold down which is pressed in the block. The one question I have is: since the oil pump/ dist shaft was worn down by about 1 hundreths and the hole in the dist hold down part seems to be worn larger by 4-5 thousands what should that dist hold down inside hole size be? Does anyone have any specs for the hole size of that press fit part where the oild pump/dist drive shaft rides? I'm going to implement shop where they work on Ih mainly and they said they would pop one out of a parts tractor for me. I would like to know if what I'm going to get another worn out one or not. I guess if its a tighter fit than the one I have that's better than nothing. I'd still love to know what it should be tho. I cant find anything even covering that part. The mechanic at that shop said they have never heard of one wearing out and never check it when they work on the oil pump/dist. I guess I'm now overly concerned but I dont want to touch it again in the near future or ruin another oil pan gasket and a day of work. Sorry the post is so wordy!
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