Mack F 1978

Model F made in 1978 by Mack got 4 recalls. There were some recalls concerningengine and engine cooling, service brakes, air and suspension.

Model 1978

Recalls


CampaignManufacturerManufacturing dateType# of units affectedDate Owner notified MfgRecall Initiated byManufacturers of recalled vehicles/productsReport Recieved DateRecord Creation DateRegulation Part NumberFMVSS Number
ENGINE AND ENGINE COOLING - ENGINE
79V133000MACK TRUCKS, INCORPORATEDfrom 02/01/1977 to 03/01/1979V (Vehicle)2300011/02/1979ODIMACK TRUCKS, INC05/31/197910/12/1979
Defect SummaryIn the event of turbocharger compressor wheel failure, one or more of the four capscrews that hold the turbocharger together may be struck by parts of the compressor wheel, resulting in the capscrews being damaged. if these capscrews are damaged to the point that they allow the compressor back plate to dislocate from the turbocharger bearing housing, engine lubricating oil may be allowed to escape under pressure, contacting the engine exhaust manifold sections or turbocharger turbine housing.
Consequence Summary
Corrective SummaryDealer will install a shield for the heads of the four capscrews, along with stronger sae 8 grade 8 capscrews, if necessary, at no cost to owner.
NotesVehicle description: trucks equipped with endt (b) 676, etaz (b) 673a, and etay(b) 673a engines.system: engine and engine cooling.consequences of defect: engine lubricating oil, in the presence of a source ofignition, could lead to an engine compartment fire and serious injury tovehicle passengers.
SERVICE BRAKES, AIR - ANTILOCK - INTERCONNECTING ASSEMBLY(WIRING)
78V210000MACK TRUCKS, INCORPORATEDfrom 10/01/1977 to 09/01/1978V (Vehicle)1937011/07/1978MFRMACK TRUCKS, INC10/03/197810/12/1979571121
Defect SummaryDelays of up to about 2 seconds may exist in the brake application times to the brakes on the bogie axles in the presence of certain types of wheel speed sensor signal discontinuities or distortions that may occur as a result of sensor wire failure. this constitutes a non-compliance to federal motor vehicle safety standard no. 121, air brake systems.
Consequence Summary
Corrective SummaryDealer will install new wheel speed sensors that incorporate improved wiring and the present bogie anti-wheel lock system will be changed to an axle-to-axle system for improved reliability.
NotesVehicle description: heavy trucks.system: service brakes; electrical wiring and connectors.consequences of defect: this delay in effective braking action could lead to anaccident under certain traffic conditions.
SUSPENSION - MULTIPLE AXLE
78V031000MACK TRUCKS, INCORPORATEDfrom 03/01/1975 to 02/01/1978V (Vehicle)3300008/16/1978MFRMACK TRUCKS, INC02/09/197810/12/1979
Defect SummaryThe tee bracket, which is mounted on the front axle of the bogie, may fail due to vibration brought on by road surface irregularities. bracket failure would leave the tee bracket unsupported and cause broken hose connector fittings. this would result in automatic application of the spring emergency brakes.
Consequence Summary
Corrective SummaryThe dealer will replace the defective bracket with a redesigned version.
NotesVehicle description: trucks equipped with highway bogies.system: suspension; tee bracket.consequences of defect: automatic application of the spring emergency brakescould cause loss of vehicle control and an accident.
SUSPENSION - REAR - SPRINGS - LEAF SPRING ASSEMBLY - HANGER/BRACKET
79V018000MACK TRUCKS, INCORPORATEDfrom 04/01/1978 to 06/01/1978V (Vehicle)1709/05/1979MFRMACK TRUCKS, INC01/12/197910/12/1979
Defect SummaryThe steel brackets on the suspension beam were found to be deficient due to excessive shrinkage and low mechanical properties. failure of one or both of these brackets could cause a separation of the axle housing from the suspension.
Consequence Summary
Corrective SummaryThe dealer will inspect and, if necessary, replace any suspect bogie spring insulator caps with new caps meeting the proper specifications at no cost to owner.
NotesVehicle description: trucks, heavy.system: suspension; hanger brackets.consequences of defect: loss of vehicle control can result and lead to avehicle accident.