SECTION 2 Page 34 MAINTENANCE Drain the air system wet tank to release the system air pressure. Remove the air discharge line from the air compressor Pull rings (1) on the drain valves, and drain water and air out of the tank. Measure the total carbon thickness inside the air discharge line as shown. If the total carbon deposit (X + X) exceeds 2 mm [J/16-inch], clean and inspect the cylinder head, the valve assembly, and the discharge line. Replace if necessary. Refer to the appropriate Air Equipment Manual listed below for procedures, or csntact your Cummins Authorized Repair Location. Single Cylinder, Bulletin No.
3810242 If the total carbon deposit exceeds specifications, continue checking the air discharge line connec- tions up to the first tank until total carbon deposit is less than 2 mm [l/16-inch] Clean or replace any lines or connections that exceed this specifi- cation.