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TM 9-2330-331-14&P
AIR LEAKAGE TEST
INITIAL SETUP:
Equipment Conditions
Materials/Parts
Semitrailer Coupled to Towing Vehicle with Air
Dishwashing Compound (WP 0086 00-2)
System Pressurized (WP 0007 00-2).
Tools/Test Equipment
Personnel Required
General Mechanic's Tool Kit (WP 0077 00-9)
Two
TEST
(1) Coat air lines, fittings, and airbrake chamber connections with soap and water solution. Inspect for air
bubbles. No air leakage is permissible.
(2) Tighten any leaking connections or replace defective components as required.
(3) Apply soap and water solution to exhaust check valve on underside of emergency relay valve. Place
service relay valve in emergency position by disconnecting either towing vehicle air line from semitrailer
air coupling.
(4) Replace air service valve if air bubble larger than 1 in. (2.5 cm) develops within three
END OF WORK PACKAGE



 


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