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6. CLEANING OF POWER PLANT Some precautions should be taken before using cleaning products :
- Protect the engine (and the aircraft if the engine is installed) to prevent infiltration of washing products or rinsing water into pressure inlets, valves and various lines, and especially the cabin air conditioning duct which should be disconnected and blanked-off. Use covers and adhesive tape.
- Make sure that the engine is cold.
An engine and accessory wash-down should be accomplished to remove oil, grease, salt corrosion or other residues that might conceal component defects during inspection. Also periodic cleaning can be very effective in preventive maintenance.
Precautions should be taken when working with cleaning agents such as the wearing of rubber gloves, an apron or coveralls and a face shield or goggles. Use the least toxic of available cleaning agents that will satisfactorily accomplish the work.
External cleaning of the various engine components :
CAUTION : IT IS IMPERATIVELY NECESSARY TO PROTECT THE VACUUM PUMP, INSTALLED ON THE ENGINE REAR TABLE, FROM CLEANER PROJECTIONS WHILE WASHING THE ENGINE.
White spirit (TB 11-002) is to be used, to the exclusion of other solvents which are often more volatile and dangerous such as white gasoline, kerosene, etc... It may be applied with a brush or cloth. It is better to apply the white spirit (TB 11-002) in 2 steps. The second application is made 5 or 10 minutes after the first one and is considered as rinsing.
Drying is generally obtained by natural evaporation but it may be necessary to use a compressed air device to eliminate excess solvent.
WARNING : DO NOT USE GASOLINE OR OTHER HIGHLY FLAMMABLE SUBSTANCES FOR WASH-DOWN.
Perform all cleaning operations in well ventilated working areas, and ensure that adequate fire-fighting and safety equipment is available. Do not smoke or expose a flame within 100 feet of the cleaning area. Compressed air, used for cleaning agent application or drying, should be adjusted to the lowest practical pressure. The use of a stiff bristle fiber brush rather than a steel brush is recommended if cleaning agents do not remove excess grease and grime during spraying.
WA
Validity : S / N 1 - 9999 12-20-03Page 202
(BA) JUN 02
7. INTERIOR CARE
NOTE : Generally and whatever the spot may be, act as follows :
1) Operate immediately.
2) Reduce spot from edges to centre to avoid ring.
3) Remove the maximum of the spot with a knife and pat with a white and clean rag.
4) Identify the spot and use the proper products and methods.
5) If solvent is necessary, never pour directly on the surface to be cleaned but on a clean rag.
6) Apply solvent, rub up with a clean and dry rag and brush the wrong way.
7) Allow to dry and avoid contacts with humid part. When it is dry, vacuum-clean and brush.
A. Upholsterings and ground carpet
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TB20 MAINTENANCE MANUAL 12 SERVICING TB20飞机维护手册 12 保养(55)
