Consequence
IF SUCH CONTACT OCCURS WHEN HEATER FAN IS ON MEDIUMSPEED, AN ELECTRICAL SHORT OCCURS, CAUSING THE FAN SPEED CONTROL RESISTOR TOOVERHEAT AND MELT THE PLASTIC FAN HOUSING; THIS WOULD CREATE A POTENTIAL FORA FIRE.
Remedy
REPOSITION AIR RIDE SUSPENSION VALVE TO PREVENT ITS CONTACT WITH THE HEATER FAN CONTROL SWITCH.
Notes
SYSTEM: AIR RIDE SUSPENSION VALVE; HEATER FAN CONTROL SWITCH.VEHICLE DESCRIPTION: 33,000 LBS. GVWR HEAVY-DUTY TRUCKS.DESCRIPTION OF DEFECTS: A FITTING ON THE AIR RIDE SUSPENSION VALVE MAY TOUCH THEHEATER FAN CONTROL SWITCH.
Source: NHTSA ODI recalls file, campaign 90V179000. Text as published by NHTSA.