Recall 79V-014: 1978 Mack MC, 1978 Mack MR
MACK TRUCKS, INCORPORATED recall for visibility, reported to NHTSA on Jan 9, 1979, covering about 358 vehicles.
The problem
A deficiency in the routing of the heater duct hose could allow the hose to rest against a terminal post of the accessory relay. Vibration will eventually cause the terminal post to penetrate the hose fabric and short circuit the wire reinforcement and overload the circuit.
The fix
Dealer will replace the portion of the existing hose that is closest to the accessory relay with an all-rubber hose.
Notes
Vehicle description: trucks.system: electrical; heat duct hose.consequences of defect: due to a lack of circuit breaker protection, fire andloss of all electrical circuits, including headlights, can occur and possiblylead to a vehicle accident.
Recall details
| Manufacturer | MACK TRUCKS, INCORPORATED |
|---|---|
| Component | Visibility › Defroster/Defogger/Hvac System › Heater Core |
| Recall started by | the manufacturer |
| NHTSA campaign number | 79V014000 |
Vehicles in this recall
Not every vehicle of these model years is included. Enter your VIN at nhtsa.gov/recalls ↗ or ask a dealer.
Frequently asked questions
What is recall 79V-014?
A deficiency in the routing of the heater duct hose could allow the hose to rest against a terminal post of the accessory relay. Vibration will eventually cause the terminal post to penetrate the hose fabric and short circuit the wire reinforcement and overload the circuit.
How is recall 79V-014 fixed?
Dealer will replace the portion of the existing hose that is closest to the accessory relay with an all-rubber hose.
Is the recall repair free?
Yes. Safety recall repairs are free at authorized dealers. Check whether your vehicle is included with its VIN at nhtsa.gov/recalls.