Mack R 1976

Model R made in 1976 by Mack got 4 recalls. There were some recalls concerningengine and engine cooling, service brakes, air and suspension.

R year 1976

Recalls

Model 1976

Recalls

Campaign	Manufacturer	Manufacturing date	Type	# of units affected	Date Owner notified Mfg	Recall Initiated by	Manufacturers of recalled vehicles/products	Report Recieved Date	Record Creation Date
ENGINE AND ENGINE COOLING - COOLING SYSTEM - FAN
77V173000	MACK TRUCKS, INCORPORATED		V (Vehicle)	48000	03/23/1978	ODI	MACK TRUCKS, INC	10/12/1977	10/12/1979
Defect Summary	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 Summary
Corrective Summary	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.
ENGINE AND ENGINE COOLING - ENGINE - GASOLINE
78V032000	MACK TRUCKS, INCORPORATED	from 07/01/1976 to 12/01/1977	V (Vehicle)	459	10/26/1978	MFR	MACK TRUCKS, INC	02/09/1978	10/12/1979
Defect Summary	The synflex-type oil pressure signal line may have been routed too close to the exhaust manifold. excessive heat may cause the line to rupture, and oil leakage may occur.
Consequence Summary
Corrective Summary	The dealer will reroute the oil pressure signal line to eliminate potential fire hazard, without charge to owner.
Notes	Vehicle description: trucks equipped with v-8 engines.system: engine; oil pressure signal line.consequences of defect: if oil is sprayed onto the hot exhaust manifold, avehicle fire and personal injury to occupants could result.
SERVICE BRAKES, AIR - ANTILOCK - CONTROL UNIT/MODULE
78V068000	MACK TRUCKS, INCORPORATED	from 10/01/1974 to 03/01/1976	V (Vehicle)	9700	09/01/1978	ODI	MACK TRUCKS, INC	04/04/1978	10/12/1979
Defect Summary	An axle no brake condition could result from an eaton controller internal electrical malfunction. this condition may cause the anti-wheel lock valve solenoid to be continuously energized and prevent the brakes from being applied on one of the axles. as a result, the anti-wheel lock warning lamp is not activated.
Consequence Summary
Corrective Summary	The dealer will inspect and, if necessary, replace the anti-wheel lock controller without charge to owner.
Notes	Vehicle description: trucks equipped with eaton 21 anti-lock controllers.system: service brakes; anti-wheel lock solenoid.consequences of defect: loss of brakes on any one axle will result in extendedvehicle stopping distances, which could lead to a vehicle accident.
SUSPENSION - MULTIPLE AXLE
78V031000	MACK TRUCKS, INCORPORATED	from 03/01/1975 to 02/01/1978	V (Vehicle)	33000	08/16/1978	MFR	MACK TRUCKS, INC	02/09/1978	10/12/1979
Defect Summary	The 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 Summary	The dealer will replace the defective bracket with a redesigned version.
Notes	Vehicle 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.