1991 AMERTEK CF4000L Recalls (3)
- Campaign:
- 92V084000 on 06/25/1992
- Component:
- Wheels:lugs/nuts/bolts
- Affected:
- 118
- Defect:
- Design of the rear wheel mounting assembly causes a high sensitivity to lug stud nut torque loss and subsequent stud failure through bending fatigue.
- Consequence:
- The rear wheel mounting stud can bend and/or break,resulting in detachment of the wheel from the axle if all five lug studs shouldfail.
- Correction:
- Amertek will reduce the dimension of the outside rear wheel tires; replace the lug nut spacers with cushion washers on each rear wheel hub; replace the current 4.38 inch studs with 3.25 inch studs; and delete the paint on the bevel surface of the stud holes on the wheel disc.
- Notes:
- System: rear wheel mounting stud.vehicle description: aircraft rescue fire fighting truck.
- Campaign:
- 92V169000 on 11/26/1992
- Component:
- Steering:hydraulic power assist system
- Manufactured:
- 07/31/1991 - 09/30/1992
- Affected:
- 118
- Defect:
- A contaminant from impurities in the hydraulic return hoses or the oil reservoir can lead to malfunctions of the pressure control valves controlling the power steering and water pump engagement.
- Consequence:
- Malfunctions of the pressure control valves in the powersteering assembly can result in loss of power steering without prior warning,and loss of vehicle control.
- Correction:
- An additional hydraulic fluid filter will be added between the hydraulic pump and the hydraulic control valve block to collect impurities.
- Notes:
- System: steering.vehicle description: crash/rescue fire trucks used by the u.s. navy at naval airstations.
- Campaign:
- 92V170000 on 11/29/1992
- Component:
- Wheels:center section
- Manufactured:
- 07/31/1991 - 09/30/1992
- Affected:
- 118
- Defect:
- The front wheel disc cracks around the bolt hole circle.
- Consequence:
- Cracking of the wheel disc results in possible separationof the tire and rim from the wheel disc which could cause an accident.
- Correction:
- Corrective action has not been determined. amertek is working with the united states navy to correct this problem.
- Notes:
- System: wheels.vehicle description: fire trucks used for aircraft rescue at naval air stations.
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