Mack U 1971

Model U made in 1971 by Mack got 5 recalls. There were some recalls concerningfuel system, gasoline, power train and steering.

Model 1971

Recalls

CampaignManufacturerManufacturing dateType# of units affectedDate Owner notified MfgRecall Initiated byManufacturers of recalled vehicles/productsReport Recieved DateRecord Creation DateRegulation Part NumberFMVSS Number
FUEL SYSTEM, GASOLINE - FUEL INJECTION SYSTEM
72V127000MACK TRUCKS, INCORPORATEDfrom 08/01/1970 to 09/01/1971V (Vehicle)141007/24/1972MFRMACK TRUCKS, INC05/22/197210/12/1979
Defect Summary
Consequence Summary
Corrective Summary
NotesMack service bulletin no g1003.equipped with american-bosch ape-8vbb fuelinjection pump.manfd 9-70 thru 10-16 1971.trucks.possibility that linkconnecting governor fulcrum lever to fuel injection pump control racks canbreak and cause loss of fuel delivery controlto engine.should this conditionoccur, it could impair vehicle control.(correct by inspecting and installingspring clip on fulcrum lever to prevent engine overspeed.)
POWER TRAIN - AXLE ASSEMBLY - BANJO HOUSING
74V032000MACK TRUCKS, INCORPORATED V (Vehicle)901908/13/1974MFRMACK TRUCKS, INC02/25/197410/12/1979
Defect Summary
Consequence Summary
Corrective Summary
NotesMack trucks campaign no n/a.with sn56 and sw57 bogie housings.built mar1971 thru jun 1972.trucks.possibility that the bogie housing wall thicknessat the left inner wheel bearing race may not meet specific dimensionalrequirements.if this condition exists, it could lead to spindle failure,resulting in loss of a rear wheel assembly.(correct by inspecting andreplacing brgie housing where necessary).
STEERING - LINKAGES
72V041000MACK TRUCKS, INCORPORATEDfrom 08/01/1970 to 12/01/1971V (Vehicle)53806/07/1972MFRMACK TRUCKS, INC02/14/197210/12/1979
Defect Summary
Consequence Summary
Corrective Summary
NotesMack campaign no r1005.equipped w/sgp48.trucks.possibility that if pitmanarm is not relocated and steering linkage readjusted, possible toggle conditionwill result in extreme right turn.(correct by inspecting and making necessaryadjustments.).
STEERING - LINKAGES - KNUCKLE - SPINDLE - ARM
78V171000MACK TRUCKS, INCORPORATED V (Vehicle)210008/10/1979MFRMACK TRUCKS, INC08/08/197810/12/1979
Defect SummaryDeficiencies, in the form of forging laps, cracks and excessive decarburization during heat treatment, exist in the steering knuckles. stresses imposed with integral hydraulic power steering may lead to a failure in the area of the steering arm attaching boss. this type of failure would cause loss of steering control.
Consequence Summary
Corrective SummaryDealer will inspect and, if necessary, replace the left steering knuckle with an improved type of knuckle.
NotesVehicle description: truck tractors.system: steering; steering knuckle.consequences of defect: loss of steering control could cause a vehicleaccident.
SUSPENSION - MULTIPLE AXLE
75V118000MACK TRUCKS, INCORPORATED V (Vehicle)41411/11/1975ODIMACK TRUCKS, INC06/23/197510/12/1979
Defect Summary
Consequence Summary
Corrective Summary
NotesMack trucks campaign no sc060.trucks mfg'd 1967 thru jan.31, 1973.possibility that the suspension trunnion brackets may develop cracks.if suchcondition exists and cracks are not detected, continued operation couldultimately lead to trunnion tube separation from the trunnion and permit axleassembly dislocation.failure of the trunnion bracket could result in loss ofvehicle control without warning to the driver.(correct by inspecting andreplacing brackets where necessary).

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