Mack R 1971

Model R made in 1971 by Mack got 9 recalls. There were some recalls concerningcommunications, engine and engine cooling and fuel system, gasoline.

R year 1971

Recalls

Model 1971

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
COMMUNICATIONS - HORN ASSEMBLY
73V153000	MACK TRUCKS, INCORPORATED	from 02/01/1971 to 06/01/1973	V (Vehicle)	1285	10/22/1973	MFR	MACK TRUCKS, INC	07/18/1973	10/12/1979
Defect Summary
Consequence Summary
Corrective Summary
Notes	Mack trucks campaign no n/a.manuf'd feb.1971 thru june 1973.trucks.possibility that the electric horn mounting bracket could crack and fail.ifthis condition exists the horn could interfere with steering shaft universaljoint and cause steering lockup in a left hand turn situation.(correct byinspecting and replacing horn assembly with improved type bracket).
ENGINE AND ENGINE COOLING - ENGINE
74V002000	MACK TRUCKS, INCORPORATED		V (Vehicle)	844	03/19/1974	MFR	MACK TRUCKS, INC	12/02/1974	10/12/1979
Defect Summary
Consequence Summary
Corrective Summary
Notes	Mack campaign no sco#46.models equipped with turbo unloader.mar 1969 thrunov 1973.trucks.possibility that the oil supply line to the turbo unloaderis routed too close to the turbo charger.if this condition exists, heat couldcause hose deterioration and oil leakage which could create a fire hazard.(correct by inspecting and relocating oil lines to provide adequate clearancebetween oil supply line and turbo changer).
FUEL SYSTEM, GASOLINE - CARBURETOR SYSTEM
71V179000	MACK TRUCKS, INCORPORATED	from 12/01/1968 to 05/01/1971	V (Vehicle)	15002	10/06/1971	MFR	MACK TRUCKS, INC	10/13/1971	10/12/1979
Defect Summary
Consequence Summary
Corrective Summary
Notes	Built btwn dec.1968 and may 1971.truck tractors.possibil ity that airintake hood, which consists of metal cap attachedto perforated plastic innersection, may not securely clamp t o plastic section.if condition exists, capcan turn and cutplastic.if plastic is deeply cut, metal cap can separatecom pletely.such failure, particularly at high speeds, could cre atepotential risk to safety of other highway users.(correctby inspecting andreplacing with improved air intake hood whe re necessary.)
FUEL SYSTEM, GASOLINE - FUEL INJECTION SYSTEM
72V127000	MACK TRUCKS, INCORPORATED	from 08/01/1970 to 09/01/1971	V (Vehicle)	1410	07/24/1972	MFR	MACK TRUCKS, INC	05/22/1972	10/12/1979
Defect Summary
Consequence Summary
Corrective Summary
Notes	Mack 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
74V032000	MACK TRUCKS, INCORPORATED		V (Vehicle)	9019	08/13/1974	MFR	MACK TRUCKS, INC	02/25/1974	10/12/1979
Defect Summary
Consequence Summary
Corrective Summary
Notes	Mack 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).
SERVICE BRAKES, AIR
73V102000	MACK TRUCKS, INCORPORATED	from 01/01/1971 to 03/01/1973	V (Vehicle)	2481	08/24/1973	MFR	MACK TRUCKS, INC	05/04/1973	10/12/1979
Defect Summary
Consequence Summary
Corrective Summary
Notes	Equipped with anchorlok spring brake chambers.manf'd jan.1971 thru march1973.trucks.possibility that the clamp ringbolts on the anchorlok springbrake chamber were incorrectly positioned at time of installation.in thisposition the end of the bolt may contact rear axle housing during brakeactuation.due to bracket deflection, the clamp ring or bolt may failpermitting the spring brake section to separate from the service chamber.(correct by inspecting and repositioning clamp and bolts).
STEERING - LINKAGES
72V041000	MACK TRUCKS, INCORPORATED	from 08/01/1970 to 12/01/1971	V (Vehicle)	538	06/07/1972	MFR	MACK TRUCKS, INC	02/14/1972	10/12/1979
Defect Summary
Consequence Summary
Corrective Summary
Notes	Mack 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
78V171000	MACK TRUCKS, INCORPORATED		V (Vehicle)	2100	08/10/1979	MFR	MACK TRUCKS, INC	08/08/1978	10/12/1979
Defect Summary	Deficiencies, 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 Summary	Dealer will inspect and, if necessary, replace the left steering knuckle with an improved type of knuckle.
Notes	Vehicle description: truck tractors.system: steering; steering knuckle.consequences of defect: loss of steering control could cause a vehicleaccident.
SUSPENSION - MULTIPLE AXLE
75V118000	MACK TRUCKS, INCORPORATED		V (Vehicle)	414	11/11/1975	ODI	MACK TRUCKS, INC	06/23/1975	10/12/1979
Defect Summary
Consequence Summary
Corrective Summary
Notes	Mack 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).