1989 FORD LS9000 Recall

Campaign:

90V121000 on 06/25/1990

Component:

Service brakes, air:controls

Manufactured:

02/28/1989 - 12/31/1989

Affected:

15,260

Defect:

Secondary service reservoir air check valves may not seat properly due to a mechanical interference condition between a circular brass guide and the wall of a cylindrical ferrule in which the brass guide is intended to move freely.

Consequence:

In the event of pressure loss in the supply reservoir,a defective check valve would allow pressure equalization between primary andsecondary service reservoirs, presenting the potential for loss or absence offront braking ability, which could cause loss of control and an accident.

Correction:

Install revised design secondary service reservoir check valve components.

Notes:

System: air pressure check valves.vehicle description: heavy duty trucks and chassis cabs.

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