| NHTSA Campaign Number: |
78V171000 |
| Vehicle/Equipment Make: |
MACK |
| Vehicle/Equipment Model: |
F |
| Model Year: |
1971 |
| Manufacturer Campaign Number: |
|
| Manufacturer Component Description: |
STEERING:LINKAGES:KNUCKLE:SPINDLE:ARM |
| Manufacturers Involved in Recall: |
MACK TRUCKS, INCORPORATED |
| Manufacturered: |
- |
| Type of Report: |
V (Vehicle, Equipment or Tire) |
| Potential Number of Units Affected: |
2100 |
| Date Owner Notified By Manufacturer: |
19790810 |
| Recall Initiated By: |
19790810 |
| Manufacturer Responsible For Recall: |
MACK TRUCKS, INC |
| Report Received Date: |
19780808 |
| Record Creation Date: |
19791012 |
| Regulation Part Number: |
|
| Federal Motor Vehicle Safety Standard Number: |
|
| Defect Summary: |
DEFICIENCIES, IN THE FORM OF FORGING LAPS, CRACKS AND EXCESSIVE DECARBURIZATION DURING HEAT TREATMENT, EXIST IN THE STEERING KNUCKLES. STRESSES IMPOSED WITH INTEGRAL HYDRAULIC POWER STEERING MAY LEAD TO A FAILURE IN THE AREA OF THE STEERING ARM ATTACHING BOSS. THIS TYPE OF FAILURE WOULD CAUSE LOSS OF STEERING CONTROL. |
| Consequence Summary: |
|
| Corrective Summary: |
DEALER WILL INSPECT AND, IF NECESSARY, REPLACE THE LEFT STEERING KNUCKLE WITH AN IMPROVED TYPE OF KNUCKLE. |