No heat L4630

DustyRusty

Well-known member

Equipment
2020 BX23S, BX2822 Snowblower, Curtis Deluxe Cab,
Nov 8, 2015
6,237
4,816
113
North East CT
I know that this advice is a little late, but whenever I removed a head to replace a head gasket, I would take the head to the machine shop to have them test the head for cracks or warps. The process is called magnaflux crack detection, and it is done by sprinkling powdered iron on the head and applying current to create north-south electrical poles to the head. It isn't very expensive a process and all it takes is a clean head free of oil and grime. Checking for warpage is done by placing the head on a steel plate that is perfectly smooth and true. These are the methods used 50+ years ago, and today they might have a more modern method that I am not aware of.
 

Bill in the U.P.

Member

Equipment
L4630 GST
Dec 31, 2020
80
18
8
Michigan
I know that this advice is a little late, but whenever I removed a head to replace a head gasket, I would take the head to the machine shop to have them test the head for cracks or warps. The process is called magnaflux crack detection, and it is done by sprinkling powdered iron on the head and applying current to create north-south electrical poles to the head. It isn't very expensive a process and all it takes is a clean head free of oil and grime. Checking for warpage is done by placing the head on a steel plate that is perfectly smooth and true. These are the methods used 50+ years ago, and today they might have a more modern method that I am not aware of.
Great info. Hopefully there isn't a "next time." : )