| NHTSA Campaign Number: |
78V008000 |
| Vehicle/Equipment Make: |
TMC |
| Vehicle/Equipment Model: |
MC8 |
| Model Year: |
1976 |
| Manufacturer Campaign Number: |
|
| Manufacturer Component Description: |
SERVICE BRAKES, AIR:SUPPLY |
| Manufacturers Involved in Recall: |
TRANSIT MANUFACTURING,INC |
| Manufacturered: |
19760801 - 19771001 |
| Type of Report: |
V (Vehicle, Equipment or Tire) |
| Potential Number of Units Affected: |
527 |
| Date Owner Notified By Manufacturer: |
19771130 |
| Recall Initiated By: |
19771130 |
| Manufacturer Responsible For Recall: |
MOTOR COACH INDUSTRIES, INC |
| Report Received Date: |
19780116 |
| Record Creation Date: |
19791012 |
| Regulation Part Number: |
571 |
| Federal Motor Vehicle Safety Standard Number: |
121 |
| Defect Summary: |
THE INVOLVED VEHICLES MAY NOT COMPLY WITH FEDERAL MOTOR VEHICLE SAFETY STANDARD NO. 121, "MODULATED EMERGENCY BRAKING". THE "O" RINGS IN THE SHUTTLE VALVE MAY DEVELOP SLIGHT LEAKS IN COLD WEATHER. IN ADDITION, NEOPRENE WASHERS USED ON THESE "O" RINGS MAY EVENTUALLY EXPAND OR PUCKER IN COLD CLIMATES, MAKING IT POSSIBLE FOR THE SHUTTLE PISTON TO BECOME TRAPPED BY THE INNER-CIRCUMFERENCES OF THE WASHERS. THIS WOULD FORCE THE EMERGENCY BRAKES TO THE "ON" POSITION AND WOULD PREVENT THEM FROM BEING RELEASED. |
| Consequence Summary: |
|
| Corrective Summary: |
THE DEALER WILL REPLACE THE TWO NEOPRENE WASHERS WITH GLASS FILLED TEFLON WASHERS THAT WILL NOT BE AFFECTED BY COLD CLIMATES. |