b. Cleaning and Inspection
(1) Wash muffler with NID solution; rinse with warm fresh water. Squeeze, do not twist to remove
(2) Dry by wrapping In clean, lint-free cloth.
(3) Inspect for cracks, tears, or any sign of damage or deterioration.
Repair is accomplished by replacement of damaged parts.
(1) Install muffler (1) in air train (2).
(2) Install muffler/air train in helmet (para 4-21).
(3) Install helmet liner in helmet (para 4-23).