TM 5-3805-262-343-12. AIR BRAKE SYSTEM MAINTENANCE (CONT)c. PressureProtectionValve(Cont).ADJUSTMENTNOTEFor this procedure, you must use an air pressure regulator which can beadjusted to reduce air pressure to 85 psi.(1)(2)(3)(4)(5)(6)(7)(8)Connect an air pressure regulator to shop compressed air system.Connect air hose from air pressure regulator outlet to pressure protec-tion valve inlet.Adjust air pressure regulator to 85 psi.Check if air flows from pressureprotection valve outlet. If airflows from outlet, turn capclockwise until air stops flow-ing.Turn cap counterclockwise justuntil air flows from pressureprotection valve outlet.Hold cap to prevent it from moving andtighten nut against cap. Be sure aircontinues to flow from pressure protec-tion valve outlet.Disconnect air hose from pressure protection valve.Install pressure protection valve (refer to TM 5-3805-262-20).3-458
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