AIR RESERVOIR TEST
Detergent, General Purpose
AIR RESERVOIR SERVICE CHECK
Turn off air supply to semitrailer.
Wear eye protection when checking for air leaks. Failure to comply may result in death or
injury to personnel. Failure to comply may result in death or injury to personnel. Seek
medical attention in the event of an injury.
Pull on front and rear air reservoir dump valve release cables (Figure 1, Items 1 and 2) and allow air
reservoir to drain fully, then release dump valve cables (Figure 1, Items 1 and 2).
Air Reservoir Dump Valve Release Cables.
Turn on air supply to semitrailer at towing vehicle.
Check for air leaks. Listen for hissing sounds and feel for escaping air. A soapy water solution will aid in
detecting air leaks.