| NHTSA Campaign Number: |
96V232000 |
| Vehicle/Equipment Make: |
FREIGHTLINER |
| Vehicle/Equipment Model: |
FLD |
| Model Year: |
1994 |
| Manufacturer Campaign Number: |
|
| Manufacturer Component Description: |
ENGINE AND ENGINE COOLING:COOLING SYSTEM:FAN |
| Manufacturers Involved in Recall: |
FREIGHTLINER CORPORATION |
| Manufacturered: |
19931001 - 19940630 |
| Type of Report: |
V (Vehicle, Equipment or Tire) |
| Potential Number of Units Affected: |
27500 |
| Date Owner Notified By Manufacturer: |
19970211 |
| Recall Initiated By: |
19970211 |
| Manufacturer Responsible For Recall: |
FREIGHTLINER LLC |
| Report Received Date: |
19961113 |
| Record Creation Date: |
19961127 |
| Regulation Part Number: |
|
| Federal Motor Vehicle Safety Standard Number: |
|
| Defect Summary: |
VEHICLE DESCRIPTION: HEAVY DUTY TRUCKS EQUIPPED WITH HORTON FAN DRIVES. THE FAN DRIVE CONTROL SYSTEM WAS RECONFIGURED WHICH RESULTED IN A SIGNIFICANT INCREASE IN THE DEMAND FOR FAN ACTIVATION AND ASSOCIATED STRESS TO ELECTRICAL AND MECHANICAL COMPONENTS. VARIOUS COMPONENT FAILURE MODELS, COMBINED WITH CHARACTERISTICS OF THE FAN CLUTCH AND ITS BEARINGS, CAN CAUSE FAN CLUTCH BEARINGS TO FAIL PREMATURELY AND RESULT IN A LOCKED FAN. |
| Consequence Summary: |
IF THE FAN IS LOCKED, THE THE SYSTEM CALLS FOR THE FAN TO BE ON, THE FAN CLUTCH WILL SLIP, GENERATE HEAT, AND UNLESS RELEASED, WILL RESULT IN A FIRE. |
| Corrective Summary: |
DEALERS WILL REPLACE THE FAN CLUTCH DRIVE DISC WITH ONE THAT INCORPORATES A THERMALLY ACTIVATED PRESSURE RELIEF. |
