TM 5-3810-307-24-2-1
Air Compressor Discharge Inspection
Drain the air system wet tank to release the system
air pressure. Remove the air discharge line from the
air compressor.
Measure the total carbon deposit thickness inside
the air discharge line as shown. If the total carbon
deposit (X + X) exceeds 2 mm [1/16-inch], clean and
inspect the cylinder head, the valve assembly, and
the discharge line. Replace if necessary. Contact
your Authorized Repair Location for procedures.