This condition could cause reduced brake efficiency, increasing the risk of a crash.

Service Brakes, Hydraulic — Foundation Components — Master Cylinder

Summary

Vehicle description: Passenger vehicles. Certain reservoir tank caps on the brake master cylinder were produced with a worn out die and lack ventilation holes. As a result, the pressure in the reservoir tank can drop gradually as the brake pad or shoe wears and ambient temperature drops. Also, the pressure could reach a point that the brake caliper and drum cylinder are pulled back by the vacuum in the reservoir tank when the vehicle is parked for a long time.

Actions

Dealers will inspect the reservoir cap and replace it, if necessary.

Documents (6)

• Remedy Instructions and TSB
• Renotification Notice
• Defect and Noncompliance Notice(Part 573)
• Quarterly Performance Report
• Recall Acknowledgement
• Owner Notification Letter(Part 577)

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