TM 5-3810-307-24-2-2
Scrape the gasket material from all gasket surfaces.
Clean the build-up of deposits from the coolant
passages. Excessive deposits may be cleaned in an
acid tank but the cup plugs must first be removed.
Refer to Cup Plug Replacement procedure (2-10).
Clean the combustion face with a Scotch-Brite pad or
an equivalent cleaning pad and diesel fuel or solvent.
WARNING
Wear protective eye covering.
Clean carbon deposits from the valve pockets with a
high quality steel wire wheel installed in a drill or a die
grinder.
NOTE
An inferior quality wire wheel will lose steel
bristles during operation, thus causing
additional contamination.
2-8