The Ford Barn - View Single Post - Why no lock-washers?

100IH · 02-12-2018, 11:25 AM

Lock washers stop the nuts from backing off. That is not the issue with the head nuts. The issue is that the head gasket is compressing with heat cycles, will stop after about 4 heat cycles. As the gasket thickness shrinks the nuts must be snugged.

02-12-2018, 11:25 AM	#2
100IH Senior Member Join Date: Dec 2011 Location: SW Idaho Posts: 970	Re: Why no lock-washers? Lock washers stop the nuts from backing off. That is not the issue with the head nuts. The issue is that the head gasket is compressing with heat cycles, will stop after about 4 heat cycles. As the gasket thickness shrinks the nuts must be snugged.