TM 5-2420-230-24-2
B3.9 and B5.9 Series Engines
Air Compressor Carbon Buildup (012-003)
Section 12 - Compressed Air System - Group 12
Page 12-9
Air Compressor Carbon Buildup
(012-003)
Initial Check (012-003-001)
Shut off the engine.
Open the draincock on the wet tank to release compressed
air from the system.
WARNING
When using a steam cleaner, wear safety glasses or a
face shield, as well as protective clothing. Hot steam
can cause serious personal injury.
WARNING
Compressed air used for cleaning purposes should not
exceed 207 kPa [30 psi]. Wear appropriate eye and face
protection when using compressed air. Flying debris
and dirt can cause bodily injury.
Use steam to clean the compressor.
Use compressed air to dry.
Remove the air inlet and outlet connections from the air
compressor.
Measure the total carbon deposit thickness inside the air
discharge line as shown.
NOTE: The carbon deposit thickness must not exceed 1.6
mm [0.0630 in].
L-1213
