{"source":"nhtsa","country":"us","campaign":"85V113000","date":"1985-09-17","owner_notified":"1986-02-07","manufacturer":"MACK TRUCKS, INCORPORATED","component":"SERVICE BRAKES, AIR","summary":"THE DUAL DOUBLE CHECK VALVE MAY NOT RELEASE THE PROPER    AIR VOLUME TO THE BRAKE SYSTEM, CAUSING A SLIGHT TIMING DELAY BETWEEN THE        TRACTOR AND THE TRAILER BRAKE SYSTEM.                                                                                                                             CONSEQUENCES OF DEFECT: IF THE BRAKES ARE SUDDENLY APPLIED, THE TRAILER COULD    JACKKNIFE WITHOUT WARNING TO THE OPERATOR, WHICH COULD RESULT IN A VEHICLE       CRASH.","consequence":null,"remedy":"INSTALL TWO NEW SLEEVES IN THE DUAL DOUBLE CHECK VALVE WHICH  WILL INCREASE AIR FLOW.","notes":"VEHICLE DESCRIPTION: HEAVY DUTY TRACTOR TRAILER COMBINATIONS. SYSTEM: BRAKES, TRACTOR TO TRAILER.","mfr_campaign":null,"part_number":null,"units":5020,"completion":null,"do_not_drive":false,"park_outside":false,"notification":null,"french":null,"vehicles":[{"year":1982,"make":"MACK","model":"MH","vehicle_id":"1982_mack_mh","match":"exact","built_from":"1982-01-01","built_to":"1984-12-01"},{"year":1983,"make":"MACK","model":"MH","vehicle_id":"1983_mack_mh","match":"exact","built_from":"1982-01-01","built_to":"1984-12-01"},{"year":1984,"make":"MACK","model":"MH","vehicle_id":"1984_mack_mh","match":"exact","built_from":"1982-01-01","built_to":"1984-12-01"},{"year":1985,"make":"MACK","model":"MH","vehicle_id":"1985_mack_mh","match":"exact","built_from":"1982-01-01","built_to":"1984-12-01"}],"may_apply":true,"as_of":"2026-10-19","lookup":{"nhtsa":"https://www.nhtsa.gov/recalls","tc":"https://wwwapps.tc.gc.ca/Saf-Sec-Sur/7/VRDB-BDRV/search-recherche/menu.aspx?lang=eng","maker":null},"attribution":[],"url":"https://open.wenmarpro.com/recalls/nhtsa/85V113000"}