TM-9-2320-361-24-1 Page 87

TM-9-2320-361-24-1 Field Maintenance Manual Volume 1 for M44A2 Series Trucks

Page 87 of 1176

TM 9-2320-361-24-1 0003 00 0003 00-25 THEORY OF OPERATION (Contd) 0003 00-25 COMPRESSED AIR SYSTEM The compressed air system takes filtered air, compresses it, and supplies it to various components within the vehicle. The components of the air system and air actuated accessories are as follows: AIR COMPRESSOR – Draws in air, filters it, pressurizes it, and forces it into air reservoirs for storage. AIR HORN – Receives air from the compressed air system in order to operate. GOVERNOR – Automatically opens or closes a valve inside air compressor to ensure a sufficient quantity of compressed air is available for air system. PRESSURE GAUGE – Indicates amount of pressurized air available in air system. Normal pressure is 85–120 psi (586–827 kPa). SAFETY VALVE – Prevents excessive pressure to build up in air system by releasing air when necessary. AIR RESERVOIRS – Store pressurized air for use in air system and traps water to protect air-operated accessories from corrosion and freezing. I H G F E D G F E D H I