Mack Dmm Series 1988

• Recall 19554 [USA]: In the event the primary throttle return fails, failure of the secondary throttle return system would not provide protection against loss of throttle control.
  Fuel injection system reconfiguration to comply with engine emission standards cause higher engine vibration levels which lead to early wear and complete failure of the secondary throttle return mechanism.
  a new production secondary throttle return system configuration will be installed.
  system: fuel; fuel pump.Vehicle description: class 8 trucks equipped with e6 and e7 engines with robert bosch p7100 mechanically-governed fuel injection pumps.Note: if your vehicle is presented to an authorized dealer on an agreed upon service date and the remedy is not provided within a reasonable time and free of charge or the remedy does not correct the defect or noncompliance, please contact the national highway traffic safety administration's auto safety hotline at 1-800-424-9393.

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• Recall 23426 [USA]: Steering arm could fail without warning resulting in loss of steering control and possibly a crash.
  Crack may develop on steering arm that could progress and reduce the fatigue life of the steering arm.
  install a redesigned steering arm.
  system: steering arm.Vehicle description: heavy-duty trucks.

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• Recall 25272 [USA]: Under certain conditions, hose could fail resulting inloss of power steering assist and possibly an accident.
  An incorrect high pressure power steering hose may have been installed.
  replace incorrect power steering hoses.
  system: power steering hose.Vehicle description: heavy duty trucks equipped with stratoflex high pressurepower steering hose.

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• Recall 25286 [USA]: This could result in loosening and failure of the boltswith possible loss of control and accident potential.
  Dowels may have been omitted during spring cap installation; this would put shear load on the four (4) spring cap bolts.
  install the missing dowels to prevent movement between the spring cap and axle housing.
  system: spring cap to axle housing connection dowel.Vehicle description: heavy duty trucks.

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• Recall 25942 [USA]: Failure of one or both brackets could cause dislocationof engine and transmission assembly, which could result in truck disablement,possible loss of accelerator control and an accident.
  Certain engine support castings were produced with faulty metallurgy and could fail.
  replace rear engine supports as necessary.
  system: engine rear supports.Vehicle description: heavy duty trucks.

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• Recall 26936 [USA]: This would allow the pitman arm to come off the steeringgear sector shaft and result in immediate loss of steering control and a vehiclecrash could occur.
  Some of the nuts/bolts used to fasten the steering pitman arm may loosen.
  retorque nuts/bolts where necessary.
  system: steering pitman arm.Vehicle description: heavy duty trucks.

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• Recall 27823 [USA]: If clamp plate breaks, yoke would fly off at detachedpoint and could injury anyone struck by flying fragments. also, the detachedinner shaft could interfere with the brake system air supply hoses and tractortires, which could result in loss of truck control and an accident.
  Clamp plates used between the drive shaft and carrier yokes may crack and could break due to improper heat treatment.
  install new clamping plates and capscrews in all locations as needed.
  system: drive shaft yoke clamp plates.Vehicle description: heavy duty trucks.

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• Recall 1990005 [Canada]: Steering
  The high pressure power steering hose may not meet the rated burst strength pressure requirements. Hose failure with subsequent loss of steering power assist and increased steering effort could result, possibly leading to a vehicle crash without prior warning. Correction: power steering hoses will be inspected and replaced if found to be of incorrect psi rating.

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• Recall 1990038 [Canada]: Steering
  The rockwell steering arm on these vehicles may develop cracks which could ultimately lead to steering arm failure and loss of steering control without prior warning. Correction: redesigned steering arm will be installed on affected vehicles.

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• Recall 1989032 [Canada]: Suspension
  Dowels, which locate and prevent movement between the spring cap and the axle housing on the ss65 bogie, may have been omitted during installation of the spring caps. Omission of the dowels would put shear pressure on the four(4) spring cap bolts and could cause loosening or failure of the bolts. This could result in loss of control and a crash without prior warning. Correction: vehicles will be inspected and dowels installed where necessary.

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• Recall 1988117 [Canada]: Steering
  Some of the nuts/bolts used to fasten the steering pitman arm may loosen and could cause loss of steering control and a vehicle crash without prior warning. Correction: the nuts/bolts will be inspected for correct torque and retorqued where necessary.

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To ensure accuracy and for your safety, it is recommended to do a free VIN recall check here or here [USA] - UK - Canada.

Bulletins are notices put out by manufacturers in conjunction with the NHTSA to notify the public of manufacturing issues or changes.