AIR RESERVOIR SERVICE CHECK.
Turn off air supply to trailer.
Pull on front and rear air reservoir dump valve release cables (1) and (2) to allow air
reservoir to drain fully, then release dump valve cables.
Turn on air supply to trailer at prime mover.
Check for air leaks. Listen for hissing sounds and feel for air escaping. A soapy water
solution (detergent, item 8, Appendix F and water) will aid in detecting air leaks. Notify Unit
Maintenance if leaks are detected.