Failure

What NHTSA investigated

Summary of information from manufacturer:rockwell reported that models tn& tq trailer axles were not compatible with neway RC-122 suspension.loadsimposed upon those axles by the suspension were too great for successfuloperation during the life of the trailer.six final stage manufacturersutilizing the above combination conducted safety recalls.fruehauf alsoconducted a safety recall for similar reasons.eaton corporation nowstates that they are also concerned about this problem and will submit awarning letter on this subject in the near future.analysis:seven of the known manufacturers have conducted appropriatesafety recalls.two additional manufacturers are in communication with theoffice of chief counsel.three other manufacturers involved may be out ofbusiness.proposed action:upgrade to an ea.evaluate eaton's forthcoming letter.===

Recalls that followed

1. Beall — Suspension: Non-Powered Axle Assembly87V15400016 September 1987132 vehicles
2. Clough — Suspension: Non-Powered Axle Assembly87V0860008 June 198749 vehicles
3. Jl Tank — Suspension: Non-Powered Axle Assembly87V03700017 March 19876 vehicles
4. West Mark — Suspension: Non-Powered Axle Assembly87V03800016 March 198725 vehicles
5. Western — Suspension: Non-Powered Axle Assembly87V0280009 March 198710 vehicles
6. Paramount — Suspension: Non-Powered Axle Assembly87V0240003 March 19872 vehicles
7. Clement — Suspension: Hanger/Bracket87V0230002 March 198734 vehicles
8. Weld-It — Suspension: Non-Powered Axle Assembly87V0450001 January 198720 vehicles
9. Fruehauf — Suspension: Non-Powered Axle Assembly86V16900017 December 1986144 vehicles

Vehicles covered

Source

From NHTSA’s investigation file, rebuilt daily. To report a problem with your own vehicle, go to nhtsa.gov/report-a-safety-problem. All open investigations.