Vehicle recall 79V178000 · August 1, 1979
Motor Coach MC5B, MC5C and 1 more model
Certain vehicles do not comply to federal motor vehicle safety standard no. 121, "air brake systems".
Source: NHTSA data as of September 22, 2026. Last refreshed Sep 23, 2026, 2:43 AM UTC.
- Summary
- Certain vehicles do not comply to federal motor vehicle safety standard no. 121, "air brake systems". The low air warning signal may not activate until service reservoir pressure is below 60 PSI. Also, the brake release time may exceed the required 0.55 seconds on the right hand front wheel.
- Remedy
- Dealer will adjust the pin switch to pressure to bring vehicles into compliance with federal motor vehicle safety standard no. 121.
- Notes
- Vehicle description: buses, intercity.system: service brakes; low air warning signal.consequences of defect: air pressure may fall too low and vehicle operatorwould not be warned. Resulting partial loss of braking capability could cause avehicle accident.
Recall details
- NHTSA campaign
- 79V178000
- Reported to NHTSA
- August 1, 1979
- Filed by
- MOTOR COACH IND., INC.
- Owner notification
- October 1, 1979
- Vehicles potentially affected
- 1,602
- Initiated by
- NHTSA’s Office of Vehicle Safety Compliance
- Components
- Service brakes, air
Vehicles covered
As listed by NHTSA. A recall usually covers only some vehicles of each model and year, often a production date range.
- Motor Coach MC5B (1975-1977): 1977, 1976, 1975
- Motor Coach MC5C (1975-1977): 1977, 1976, 1975
- Motor Coach MC8 (1975-1977): 1977, 1976, 1975
Has your Motor Coach been repaired?
Recalls here come from NHTSA’s records for the model and year. Not every vehicle of a model is included in every recall, and this site can’t see whether a repair has been done. Only a VIN lookup can tell you that.
NHTSA’s VIN search doesn’t show recalls that were already repaired, recalls more than 15 years old, or some small manufacturers’ recalls. A Motor Coach dealer can also check your VIN. Recall repairs are free.