1991 INTERNATIONAL HARVESTER 4900 Recalls (2)

Campaign:

93V040000 on 03/24/1993

Component:

Steering:linkages

Manufactured:

12/31/1988 - 08/31/1992

Affected:

1,076

Defect:

The tie rod used on the dana fa-64 front drive axle has a threaded sleeve to permit toe-in adjustment without removing an end. the tie rod bar is necked down to incorporate the sleeve. a stress riser is created at the threaded portion of the adjustment sleeve which may cause a fatigue fracture and failure of the tie rod where it screws into the sleeve.

Consequence:

Failure of the tie rod on the front axle results in lossof steering control and a possible vehicle crash.

Correction:

Replace the tie rod with a tie rod that does not use an adjustment sleeve.

Notes:

System: steering.vehicle description: medium-weight trucks equipped with dana fa-64 front driveaxles.

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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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