SUMMARY OF INFORMATION FROM MANUFACTURER:A MANUAL CONTROL VALVE FOR THEAIR SUSPENSION IS MOUNTED ON THE SUBJECT CROSSMEMBER.THE SUBJECT CROSS-MEMBER CAN BE OVERSTRESSED AND FAIL, RESULTING IN IT PROTRUDING ABOVE THETOP OF THE FRAME AND INTERFERING WITH TRAILER CHASSIS COMPONENTS.THISCOULD RESULT IN LOSS OF VEHICLE CONTROL.ADDITIONALLY, IF THE SUBJECTCROSSMEMBER COMPLETELY SEPARATES, THE HEIGHT OF THE SUSPENSION AIR SPRINGSCOULD BE AFFECTED.THE RESULTING LEAN COULD CAUSE AN UNSUSPECTING DRIVERTO LOOSE CONTROL OF THE VEHICLE.ANALYSIS:CONCURRENCE WITH THE MANUFACTURER'S INFORMATION.PROPOSED ACTION:CLOSE THIS PE.MACK SUBMITTED A DEFECT REPORT ONFEBRUARY 2, 1987.CURRENTLY THEY ARE WORKING ON A PERMANENT SOLUTION TOCORRECT THE DEFECT.THE SOLUTION WILL BE ANALYZED WHEN AVAILABLE.===
Preliminary evaluation PE87005Closed
CROSSMEMBER CRACKING
An investigation is a step in NHTSA's review, not a finding that a defect exists. NHTSA links it to one recall campaign.
Components named
SUSPENSION:REAR:SPRINGS:AIR SUSPENSION SYSTEM
Source: NHTSA ODI investigations file, action PE87005. Text as published by NHTSA.
Products
One product line is named
Make, model and model years as listed in the investigation record.
| Make | Model | Model years |
|---|---|---|
| Mack | Mack | 1972 to 1986 |
Source: NHTSA ODI investigations file.