Defect summary
SINGLE CHECK AIR SYSTEM VALVE MAY MALFUNCTION DUE TO CORROSION.
Consequence
AIR COULD TRANSFER BETWEEN CIRCUITS OF DUAL AIR BRAKESYSTEM IN EVENT OF FAILURE OF ONE OR THE OTHER CIRCUIT, WHICH COULD CAUSEDEPLETION OF THE ENTIRE AIR SYSTEM.
Remedy
REPLACE CHECK VALVES, AS NECESSARY.
Notes
SYSTEM: AIR BRAKES.VEHICLE DESCRIPTION: CLASS 7 CAB OVER ENGINE TRUCKS.
Source: NHTSA ODI recalls file, campaign 87V088000. Text as published by NHTSA.