Defect Description For Recall
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.
Make Of Vehicle
MOTOR COACH
Model Of Vehicle
MC5C
Year
1978
Recall Campaign Number
77V186000
Component Description
Service Brakes, Air:Supply
Effect Of Defect
Fix Defect
The Dealer Will Replace All DefeCTIve “O” Rings With Ones Having Extreme Cold Resistance Properties.
Vehicle Manufacturer
Motor Coach Ind., Inc.
Start Of Manufacture
End Of Manufacture
Type Of Vehicle Recall
V
Number Affected
1182
Date Owners Notified
19771005
Initiated By
Mfr
Responsible Manufacturer
Motor Coach Industries
Date Report Received
19771025
Make Campaign Number
Part Number
571
Federal Motor Vehicle Safety Standard
121