{
  "owners": null,
  "title": "Canadian recall 1984052 (Mack), 1982 to 1983",
  "url": "https://carsmultiverse.com/canada/recall-1984052/",
  "summary": "Transport Canada recall 1984052, MACK ULTRALINER, MH, 1984-04-05. A CARBON STEEL CHECK VALVE SPRING WAS MISTAKENLY INSTALLED IN THE DUAL COMPARTMENT AIR.",
  "excerpt": "Mack Ultraliner, Mh. Published by Transport Canada as 1984052 on 5 April 1984. System: Not Entered. What the notice says A carbon steel check valve spring was mistakenly installed in the dual compartment air reservoir. usage of carbon stell springs in this application can result in severe corrosion and subsequent failure. if a leak develops in the primary air system, air would not be checked or isolated from the failed system and air … Is your vehicle included? Check with your VIN at Transport Canada , or ask a dealer. This page is an independent copy of the notice, kept so you can see what changed after it was published. It is not the authority, and the authority’s own text is the one to act on. A CARBON STEEL CHECK VALVE SPRING WAS MISTAKENLY INSTALLED IN THE DUAL COMPARTMENT AIR RESERVOIR. USAGE OF CARBON STELL SPRINGS IN THIS APPLICATION CAN RESULT IN SEVERE CORROSION AND SUBSEQUENT FAILURE. IF A LEAK DEVELOPS IN THE PRIMARY AIR SYSTEM, AIR WOULD NOT BE CHECKED OR ISOLATED FROM THE FAILED SYSTEM AND AIR WOULD FLOW FROM THE SECONDARY SYSTEM AND EXHAUST AT THE POINT OF LEAKAGE RESULTING IN LOSS OF SERVICE BRAKES AND APPLICATION OF THE EMERGENCY SPRING BRAKES. IF THE DRIVER IGNORES THE LOW AIR PRESSURE WARNING LIGHT AND BUZZER AND FAILS TO PULL OFF THE ROAD, THE POSSIBILITY EXI Transport Canada recorded this notice in capitals, as its system did for many years. It is reproduced here exactly as published. The wording above is the department's own, as it stood in the monthly f",
  "register": {
    "authority": "Transport Canada",
    "country": "Canada",
    "index": "https://carsmultiverse.com/canada/"
  },
  "datePublished": "2026-09-05T14:30:50+00:00",
  "dateModified": "2026-09-05T14:30:50+00:00",
  "license": "https://creativecommons.org/licenses/by/4.0/",
  "citation": "CarsMultiverse, \"Canadian recall 1984052 (Mack), 1982 to 1983\", https://carsmultiverse.com/canada/recall-1984052/, licensed CC BY 4.0.",
  "note": "CarsMultiverse is an independent record, not a safety authority. To act on a recall, use the official register."
}