1976 MACK MACK Recall

Campaign:

87V010000 on 02/12/1987

Component:

Suspension:rear:springs:air suspension system

Manufactured:

10/31/1971 - 01/31/1987

Affected:

5,235

Defect:

Crossmember can be overstressed and can fail, allowing the broken crossmember to protude above the top of the frame and interfere with chassis components.

Consequence:

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.

Correction:

Installation of a bolted double plate type crossmember to replace the standard channel type crossmember.

Notes:

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.

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