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CFM56-3, CFM56-5A, CFM56-5B, CFM56-7. Aircraft maintenance: arrangement and safety

The universal low profile transportation/shipping stand is designed for supporting and conveying aircraft engines of different types both within maintenance areas and transportation by road, sea and air. The engine cradle is mountable/dismountable from the transporter stand and normally secured during transport at four positions on the transporter stand by means of locking pins. The engine on the cradle can be protected from damage by means of an optional bumper bar assembly at each end of the stand.

The transporter stand is supplied with castor wheels as standard. The Transporter Stand – FB70077-200/FB70077-2ASH with ‘Ackerman’ type steering system is available as an alternative to the castor wheels. The transportation/shipping stand can accommodate Frank Brown & Son design support cradles for the following engines: CFM56-3, CFM56-5A, CFM56-5B, CFM56-7, IAE V2500.

While making Ackerman type steering arrangement attention should be paid to all steering swivel points, and these should be inspected and greased every six months. In order to ensure effective aircraft maintenance check all wheel retention nuts and spring washers, Det. 104 & 105 (qty 5 each per wheel) and torque tighten to 150 Newton Metres (110 ft/lbs) Check all cylinders for oil leaks and both hydraulic pumps as necessary.

It is important to note that whenever refilling the oil in the hydraulic raising and lowering system it is important to observe the following procedure. To avoid overfilling the hydraulic system and causing pressure build-up in the pump reservoirs the stand must always be set at its lowest position with the base of the stand directly on the ground. Never refill the system when the stand is in the mid or high position.

Hydraulic system oil filling procedure should be mode following these instructions:

  1. With base positioned on the floor remove the pump securing screws and position the pumps so that the pump bodies are vertical.
  2. Remove the filler cap/dip stick assemblies, check the oil level and fill reservoirs to dipstick level if required.
  3. Replace the filler caps and return the pumps to their original position.
  4. Operate the pumps to raise the base to the mid position and then lower to the ground.
  5. e) Repeat steps 1 to 3 and then ensure the pumps are properly secured in their original position.

Safety and prevention requirements of aircraft maintenance

Most accidents are the result of disregarding standard safety rules in operation or improper servicing, aircraft maintenance of equipment. This equipment is designed to safely transport aircraft engines when used correctly. It is not fool proof, and it is the operator’s responsibility to operate the equipment correctly and in a safe manner.

The operator is responsible for reporting any deficiencies, unusual noises, or incorrect operating conditions to supervisory personnel. It is also the responsibility of the user of this equipment to discontinue use until they are assured that the problem has been corrected.

Correct use and a good preventative maintenance program, including periodic lubricating, adjustment, and immediate correction of defects revealed through regular inspections, will not only contribute to safe operation, but will also extend the useful service life of this equipment.

It is important to note that failure to observe regular inspections, routine aircraft maintenance, aircraft tools or improper operation of the equipment will automatically void any warranty.

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