6 recalls found. |
DEFECT #1 - STEERING:LINKAGES
Posted on: 1991-05-15
Description
Stresses imposed on the lever during turning maneuvers and/or impact incidents, such as would be caused by curbs or road surface irregularity, reduce the life expectancy of the part. The steering lever may crack and eventually the stresses could cause the steering lever to break.
Consequence
A broken steering lever will cause loss of steeringcontrol without prior warning which may result in a vehicle crash.
Corrective Action
Replace the defective steering arms.
Notes
System: steering levers.vehicle description: cf model fire chassis with gross axle weight ratings of12,000 pounds or greater and equipped with power steering.note: the specific mack axles affected are: fa532, faf532, fafw537, fafw5372,fafw13.5, faw538, faw14.3, fa604, fa6042, faw616, faw618, faw617, and faw20.
DEFECT #2 - STEERING:WHEEL AND HANDLE BAR
Posted on: 1985-12-04
Description
The splined steering shaft may not be sufficiently engaged as designed due to inaccurate drilling of the holes in the frame to which the cab front mount member is bolted. Under certain conditions the steering shaft may disengage. Consequence of defect: a jarring impact might cause disengament of the splined shaft resulting in loss of steering control and possibly an accident.
Consequence
Corrective Action
Replace shafts which measure under the minimum engagement dimensions with longer shaft.
Notes
System: steering shaft. Vehicle description: fire trucks.
DEFECT #3 - ENGINE AND ENGINE COOLING:COOLING SYSTEM:FAN
Posted on: 1979-10-12
Description
The flex blade fans on the involved vehicles may develop cracks in the laminated stiffener as a result of fatigue during operation. If such a condition exists and the cracks go undetected, continued operation could cause pieces of the stiffener to break off.
Consequence
Corrective Action
Dealer will replace the original fan with a steel fixed blade fan, free of charge.
Notes
Vehicle description: trucks equipped with six-cylinder engines.system: engine cooling; fan.consequences of defect: broken pieces can be propelled outside of the fanshroud and will present an immediate danger and possible injury to personsstanding nearby.note: prior to correction, vehicle should not be serviced with the hood raisedand the engine running.
DEFECT #4 - SUSPENSION
Posted on: 1979-10-12
Description
Consequence
Corrective Action
Notes
Mack campaign no sco#45.equipped with fa535 front axle.trucks.possibilitythat the axle beam may have surface cracks on the underside below the springpads.such cracks could over a long period of time progress to beam failureand loss of vehicle control.(correct by inspecting and replacing wherenecessary).
DEFECT #5 - VEHICLE SPEED CONTROL
Posted on: 1979-10-12
Description
Consequence
Corrective Action
Notes
Mack campaign no.fire appratus with william air throttle control.built sep1 1973 thru apr 30 1974.possibility that the valve cage assembly, an internalpart of the accelerator system, could fracture resulting in an air leak orcomplete malfunction.if this occurs, it may result in poor acceleration orthe throttlesticking in any position.(correct by inspecting and installingimproved valve repair kit).
DEFECT #6 - SERVICE BRAKES, AIR:SUPPLY:HOSES, LINES/PIPING, AND FITTINGS
Posted on: 1979-10-12
Description
Consequence
Corrective Action
Notes
Mack campaign no sc065.model fire chassis may 17, 1972 thru june 23, 1975.possibility of interference between the front axle brake chamber inlet and theshock absorber brackets.under certain operating conditions and with the frontwheels turned either to the extreme left or right direction, the air inletfitting could contact the front axle shock absorber upper bracket and causeinlet fitting to break.this would result in loss of braking on the affectedwheel, and could affect steering stability during brake application.(correctby inspecting and relocating fitting to preclude contact with shock absorberbracket).