Motor Coach Industries | NHTSA Recall #77V186000

Vehicle safety recall details from the Department of Transportation.

Description

Detailed recall information for NHTSA ID 77V186000 by Motor Coach Industries. Includes 1,182 affected units, BRAKES:AIR CONTROL VALVE, component: SERVICE BRAKES, AIR, and more from the Department of Transportation.

Defect Summary

The involved vehicles do not conform to federal motor vehicle safety standard no. 121, "air brake systems". The two "o" rings that are supplied along with the new shuttle valves are of a buna "v" quality. These rings are fully functional in normal climate conditions, however, in extremely cold environments, slight leaks may develop. This valve acts as a seal between the cylinder heads of the shuttle valve and the piston. In time this seal may expand or "pucker up", making it possible for the shuttle to become trapped in an emergency braking situation.

Corrective Action

The dealer will replace all defective "o" rings with ones having extreme cold resistance properties.

Recall Overview

NHTSA ID: 77V186000
Manufacturer: Motor Coach Industries
Report Received Date: 1977-10-25T00:00:00
Subject: Brakes:air control valve
Component: Service Brakes, Air
Potentially Affected Units: 1,182

Details

MFR Campaign Number: NR (Not Reported)
Recall Type: Vehicle
Defect Summary: The involved vehicles do not conform to federal motor vehicle safety standard no. 121, "air brake systems". The two "o" rings that are supplied along with the new shuttle valves are of a buna "v" quality. These rings are fully functional in normal climate conditions, however, in extremely cold environments, slight leaks may develop. This valve acts as a seal between the cylinder heads of the shuttle valve and the piston. In time this seal may expand or "pucker up", making it possible for the shuttle to become trapped in an emergency braking situation.
Consequence Summary: N/A
Corrective Action: The dealer will replace all defective "o" rings with ones having extreme cold resistance properties.

Safety Information

Fire Risk When Parked: No
Do Not Drive: No
Completion Rate: N/A

Metadata

SID: row-jws6.3imi-syig
NHTSA ID: 77V186000
Position: N/A
Created At: 1742808662
Created Meta: N/A
Updated At: 1742808662
Updated Meta: N/A
Meta: { }
Recall Link: