1971 MACK DM Recalls (6)
- Campaign:
- 71V226000 on 10/11/1979
- Component:
- Wheels:center section
- Manufactured:
- 08/31/1970 - 03/31/1971
- Affected:
- 238
- Notes:
- Mack truck campaign no u1001.sept.22, 1970 thru april 6, 1 971.trucks.possibility that front hub may be defective.f ailure of front axle hub couldresult in loss of vehicle contr ol.(correct by inspecting and replacing hubwhere necessary. ) vehicle chassis with rockwell-standard fh901 or fl901 front axl
- Campaign:
- 73V102000 on 10/11/1979
- Component:
- Service brakes, air
- Manufactured:
- 12/31/1970 - 02/28/1973
- Affected:
- 2,481
- 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).
- Campaign:
- 74V032000 on 10/11/1979
- Component:
- Power train:axle assembly:banjo housing
- Affected:
- 9,019
- 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).
- Campaign:
- 72V127000 on 10/11/1979
- Component:
- Fuel system, gasoline:fuel injection system
- Manufactured:
- 07/31/1970 - 08/31/1971
- Affected:
- 1,410
- 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.)
- Campaign:
- 75V118000 on 10/11/1979
- Component:
- Suspension:multiple axle
- Affected:
- 414
- 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).
- Campaign:
- 72V041000 on 10/11/1979
- Component:
- Steering:linkages
- Manufactured:
- 07/31/1970 - 11/30/1971
- Affected:
- 538
- 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.).
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