1991 INTERNATIONAL HARVESTER 4700 Recall

Campaign:

93V092000 on 05/26/1993

Component:

Suspension:rear:springs:air suspension system

Manufactured:

12/31/1989 - 02/28/1993

Affected:

193

Defect:

The pressure relief valve was omitted in the air tank. the air tank is the reservoir for the air suspension and is not brake related. without the pressure relief valve, there is no back-up system to limit air pressure in the air suspension system.

Consequence:

Lack of a back-up system to limit air pressure build upcan cause excessive pressure in the air tank and can cause the tank to rupture.this can result in personal injury to anyone in the vicinity.

Correction:

Install a pressure relief valve in the air tank.

Notes:

System: suspension.vehicle description: school buses: models 4700 and 4900; heavy trucks: models3600, 3700, 3800, and 3900fg; incomplete chassis: model 1652sc.

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