NHTSA Campaign Id 87V010000; Date: Feb. 9, 1987
Trailer handling could be affected during turningmaneuvers which could result in loss of truck control and a crash. Also, acompletely separated crossmember could affect height of suspension air springsand the resulting lean could result in loss of control.
1972 Mack Mack; 1973 Mack Mack; 1974 Mack Mack; 1975 Mack Mack; 1976 Mack Mack; 1977 Mack Mack; 1978 Mack Mack; 1979 Mack Mack; 1980 Mack Mack; 1981 Mack Mack; 1982 Mack Mack; 1983 Mack Mack; 1984 Mack Mack; 1985 Mack Mack; 1986 Mack Mack; 1987 Mack Mack
Component: Suspension:rear:springs:air Suspension System
Manufactured by: Mack Trucks, Incorporated
Affected Units:: 5,235
Crossmember can be overstressed and can fail, allowing the broken crossmember to protude above the top of the frame and interfere with chassis components.
Installation of a bolted double plate type crossmember to replace the standard channel type crossmember.
System: rear crossmember with neway air suspension. Vehicle description: heavy duty trucks:dm,f,fm,mc,mce,mh,mr,r,rd,rs,rl,rw,rwl,rws and u models equipped with neway airride drive axle suspension.
Date Owners notified by Manufacturer: Feb 9, 1987
Also see: