The defect
VEHICLE DESCRIPTION: HEAVY DUTY TRUCKS. THERE IS INTERFERENCE BETWEEN THE AIR BRAKE S-CAM AND THE END OF ONE OF THE KNUCKLE STUDS. AS THE BRAKE SHOE LINING WEARS, THE S-CAM ROTATION MAY BE LIMITED BY THE INTERFERING KNUCKLE STUD. IF THE S-CAM CAN NOT ROTATE THROUGH ITS FULL RANGE OF MOTION, THE BRAKING FORCE CAN NOT BE FULLY TRANSMITTED FROM THE BRAKE SHOE LININGS TO THE BRAKE DRUMS.
The risk
THIS COULD RESULT IN A LONGER STOPPING DISTANCE OR A DRAGGING BRAKE CONDITION.
The remedy
DEALERS WILL SHORTEN THE INTERFERING KNUCKLE STUD TO ELIMINATE THE CLEARANCE PROBLEM.
NHTSA's own wording · initiated by MFR
Vehicles covered
| Model | Model years |
|---|---|
| Navistar 4800 | 1994, 1995, 1996, 1997, 1998, 1999 |
| Navistar 4900 | 1994, 1995, 1996, 1997, 1998, 1999 |
Components: SERVICE BRAKES, AIR
Model years in this recall
NHTSA complaints and the number of recall campaigns for each model year this recall covers.
| Model | Year | Complaints | Recalls |
|---|---|---|---|
| Navistar 4800 | 1994 | 0 | 2 |
| Navistar 4800 | 1995 | 0 | 2 |
| Navistar 4800 | 1996 | 0 | 1 |
| Navistar 4800 | 1997 | 0 | 1 |
| Navistar 4800 | 1998 | 0 | 1 |
| Navistar 4800 | 1999 | 0 | 2 |
| Navistar 4900 | 1994 | 0 | 2 |
| Navistar 4900 | 1995 | 0 | 2 |
| Navistar 4900 | 1996 | 0 | 2 |
| Navistar 4900 | 1997 | 0 | 2 |
| Navistar 4900 | 1998 | 0 | 4 |
| Navistar 4900 | 1999 | 0 | 5 |
Other service brakes, air recalls in 1999
18 of the 392 recall campaigns reported to NHTSA in 1999 concerned the service brakes, air; INTERNATIONAL TRUCK AND ENGINE filed 97 campaigns in all.
| 99V352000 14 Dec 1999 | FREIGHTLINER CORPORATION |
| 99V350000 14 Dec 1999 | INTERNATIONAL TRUCK AND ENGINE |
| 99V082002 9 Dec 1999 | PACCAR, INCORPORATED |
| 99V082001 30 Nov 1999 | WESTERN STAR TRUCKS, INC. |
| 99V331000 23 Nov 1999 | INTERNATIONAL TRUCK AND ENGINE |
| 99V285000 20 Oct 1999 | NEW FLYER OF AMERICA, INC. |
| 99V281000 5 Oct 1999 | PACCAR, INCORPORATED |
| 99V240000 30 Aug 1999 | VOLVO TRUCKS NORTH AMERICA INC |
NHTSA recalls (public domain) · all recalls of 1999