NHTSA Campaign 88V171000

SERVICE BRAKES, AIR:SUPPLY:LOW PRESSURE WARNING:SWITCH

Issued by E-ONE, INC. · Reported Nov 1, 1988 · 71 vehicles affected

What's wrong

USE OF THE AIR HORN CAN CAUSE THE AIR PRESSURE TO DROP BELOW 85 PSI.

Consequence

IF AIR PRESSURE DROPS BELOW 85 PSI WHILE THE VEHICLE ISBEING DRIVEN THE REAR BRAKE SPRING CHAMBERS WILL START TO APPLY CAUSING THEREAR BRAKE DRUMS TO OVERHEAT.

Remedy

INSTALL PRESSURE PROTECTION VALVES IN ALL AIR HORN CIRCUITS.

Vehicles affected by this recall

Make Model Year Units
EMERGENCY ONE AMBULANCE 1984 71
EMERGENCY ONE AMBULANCE 1985 71
EMERGENCY ONE AMBULANCE 1986 71
EMERGENCY ONE AMBULANCE 1987 71

Source: NHTSA Campaign 88V171000 on nhtsa.gov. To check the current repair status for a specific vehicle, use our free VIN decoder.