Sharp R-520F Instrucciones de operaciones descargar pdf (Pagina 31)

4-1

SECTION IV

DISASSEMBLY

4-1. GENERAL. .

4-2. AIRCRAFT PARTS AND ACCESSORIES.

4-3. Instructions in this section are based on the

assumption that all parts attached by the aircraft

manufacturer, except optional pumps, have been

removed.

4-4. Accessories supplied by the engine manufacturer

may be serviced according to instructions supplied by

the applicable accessory manufacturer.

4-5. EXTENT OF DISASSEMBLY. Line drawings

reproduced in this section are identical to those used

in the parts catalog, except for order of index numbers

assigned to components. Index numbers herein

indicate the order of disassembly. In many instances

the location of components and attaching parts in the

illustration will be sufficient to enable personnel to

accomplish disassembly operations. In such instances

such disassembly is to be accomplished, even though

there are no printed instructions to that effect,

excepting those parts which need to be removed only

for replacement. Such parts include studs, bushings,

and other tight fit inserts. The identity of these will be

obvious.

4-6. PARTS TO BE DISCARDED. Discard all

shakeproof washers, lockwires, tab washers, rubber

seal rings, oil seals, gaskets, cotter pins, hose

connectors and magneto coupling (rubber) bushings in

such manner that they will not be used again

inadvertently. Care should be taken in removing

gaskets from aluminum parts by scraping. Such

removal should be delayed until the part is to be

cleaned.

4-7. DISASSEMBLY STAND. For greatest ease of

disassembly, this engine should be mounted on an

engine stand with a tilting bed. See the installation

drawings for necessary dimensions for mounting

engine on stand.

4-8. PRELIMINARY CLEANING. Spray, or apply

with a brush, a solvent used for general cleaning of

engine parts. Remove caked dirt on bolt heads and

nuts especially. At the same time the oil sump drain

plugs should be removed to drain any remaining oil.

CAUTION

Do not use a caustic or even mild

alkaline cleaning solution for external

pre-cleaning, as these solutions will also

remove the "alodized" finish of certain

aluminum parts.

4-9. DISMANTLING.

4-10. IGNITION SYSTEM.

a. Disconnect cables from spark plugs.

b. Detach ignition cable retaining clamps from fuel

discharge brackets.

c. Detach clip from cable bracket on top of crankcase.

Disengage band clamps.

d. Detach high tension cable outlet plates from

magnetos and withdraw them to free cable assemblies.

e. Remove two attaching nuts, lockwashers and

holding washers from each magneto. Withdraw

magnetos forward from the crankcase.

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Sharp R-520F Instrucciones de operaciones Pagina 31

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