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30 Closed Cab PU · 10-14-2019, 02:38 PM

During motor rebuild last winter, had the adjustable tappets added. I believe the single nuts/tappets have a slight mismatch in threads for an interference fit, additionally the rebuilder used some type of non permanent thread lock. He said the adjusters should not need the thread lock, however he uses it anyway to be safe.

He also relayed me the same info Joe posted. Said he has not experience the double nut issue because he does not use them, but has "heard" of rare cases of the issue of them loosening up.

10-14-2019, 02:38 PM	#3
30 Closed Cab PU Senior Member Join Date: Aug 2018 Posts: 2,332	Re: adjustable tappets During motor rebuild last winter, had the adjustable tappets added. I believe the single nuts/tappets have a slight mismatch in threads for an interference fit, additionally the rebuilder used some type of non permanent thread lock. He said the adjusters should not need the thread lock, however he uses it anyway to be safe. He also relayed me the same info Joe posted. Said he has not experience the double nut issue because he does not use them, but has "heard" of rare cases of the issue of them loosening up.