1985 EMERGENCY ONE AMBULANCE Recall

Campaign:

88V171000 on 11/17/1988

Component:

Service brakes, air:supply:low pressure warning

Manufactured:

12/31/1976 - 12/31/1987

Affected:

71

Defect:

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.

Correction:

Install pressure protection valves in all air horn circuits.

Notes:

System: air pressure/brakes.vehicle information: ambulance units with rockwell u170 and s170 axles.

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