The defect
SPRAGUE WIPER ASSEMBLY PIVOT CAN SEIZE DUE TO GALVANIC CORROSION BETWEEN THE ZINC-PLATED STEEL SHAFT AND THE BRONZE BUSHINGS.
The risk
THIS CORROSION CAN CAUSE WIPER ARM/BLADE ASSEMBLY TO STOPWIPING WINDSHIELD, THIS COULD AFFECT DRIVER VISIBILITY AND RESULT IN ANACCIDENT.
The remedy
REPLACE SPRAGUE WIPER ASSEMBLY PIVOT WITH AN ASSEMBLY NOT SUSCEPTIBLE TO GALVANIC CORROSION.
NHTSA's own wording · initiated by MFR
Vehicles covered
| Model | Model years |
|---|---|
| Kenworth C500 | 1989, 1990, 1991 |
| Kenworth T400 | 1989, 1990, 1991 |
| Kenworth T450 | 1989, 1990, 1991 |
| Kenworth T600A | 1989, 1990, 1991 |
| Kenworth T800 | 1989, 1990, 1991 |
| Kenworth W900B | 1989, 1990, 1991 |
Components: VISIBILITY:WINDSHIELD WIPER/WASHER:LINKAGES
Model years in this recall
NHTSA complaints and the number of recall campaigns for each model year this recall covers.
| Model | Year | Complaints | Recalls |
|---|---|---|---|
| Kenworth C500 | 1989 | 0 | 1 |
| Kenworth C500 | 1990 | 0 | 1 |
| Kenworth C500 | 1991 | 0 | 3 |
| Kenworth T400 | 1989 | 0 | 3 |
| Kenworth T400 | 1990 | 0 | 3 |
| Kenworth T400 | 1991 | 0 | 2 |
| Kenworth T450 | 1989 | 0 | 2 |
| Kenworth T450 | 1990 | 0 | 2 |
| Kenworth T450 | 1991 | 0 | 1 |
| Kenworth T600A | 1989 | 1 | 3 |
| Kenworth T600A | 1990 | 0 | 2 |
| Kenworth T600A | 1991 | 0 | 1 |
| Kenworth T800 | 1989 | 0 | 3 |
| Kenworth T800 | 1990 | 0 | 3 |
| Kenworth T800 | 1991 | 0 | 4 |
| Kenworth W900B | 1989 | 0 | 2 |
| Kenworth W900B | 1990 | 0 | 3 |
| Kenworth W900B | 1991 | 0 | 3 |
Other visibility recalls in 1991
9 of the 220 recall campaigns reported to NHTSA in 1991 concerned the visibility; PACCAR, INCORPORATED filed 199 campaigns in all.
| 91V006000 3 Oct 1991 | THOMAS BUILT BUSES, INC. |
| 91V004000 2 Oct 1991 | CHRYSLER CORPORATION |
| 91V139000 23 Aug 1991 | BLUE BIRD BODY COMPANY |
| 91V086000 3 Jun 1991 | GENERAL MOTORS CORP. |
| 91V076000 6 May 1991 | FORD MOTOR COMPANY |
| 91V035000 4 Mar 1991 | PACCAR, INCORPORATED |
| 91V031000 19 Feb 1991 | GENERAL MOTORS CORP. |
| 91V017000 1 Jan 1991 | WINNEBAGO INDUSTRIES, INC. |
NHTSA recalls (public domain) · all recalls of 1991