VEHICLE DESCRIPTION: HEAVY DUTY 6X4 TRUCKS EQUIPPED WITH EITHER HENDRICKSON RT/RS SERIES SUSPENSIONS OR CHALMERS 800 SERIES SUSPENSIONS, WITH A WHEEL BASE GREATER THAN 250 INCHES, AND WESTERN STAR’S AIR ’96’ AIR BRAKE SYSTEM WITHOUT ANTI-LOCK BRAKES. THESE VEHICLES DO NOT MEET THE AIR BRAKE RELEASE TIME REQUIRED BY FMVSS NO. 121, “AIR BRAKE SYSTEMS.”
WESTERN STAR TRUCKS – WESTERN STAR/FMVSS 121
| Report Received Date | 09/14/1997 |
| NHTSA ID | 97V151000 |
| Consequence Summary | AIR BRAKE RELEASE TIME MAY BE LONGER THAN ANTICIPATED BY THE OPERATOR INCREASING THE RISK OF A VEHICLE CRASH. |
| Corrective Action | DEALERS WILL INSTALL AN IN-LINE QUICK RELEASE VALVE IN EACH OF THE DROP LINES TO THE REAR MOST BRAKE CHAMBERS. |
| Recall Code | NR (Not Reported) |
| Potentially Affected | 40 |
| Fire Risk When Parked | No |
| Do Not Drive | No |
| Recall Link | Go to Recall (https://www.nhtsa.gov/recalls?nhtsaId=97V151000) |
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