Returning Engine To Service; Indefinite Storage Inspection Procedures - Continental Motors TSIO-520-BE Maintenance And Operator's Manual

2. Install dehydrator plugs MS27215-2, in each of the top spark plug holes, making sure that the contents
of each plug is blue in color when installed. Protect and support the spark plug leads with AN-4060
protectors.
3. The TCM fuel injection system does not require any special preservation.
4. Place a bag of desiccant in the exhaust pipes and seal the openings with moisture resistant tape.
5. Seal the induction system with moisture resistant tape.
6. Seal the engine breather.
7. Attach a red streamer at each location where bags of desiccant are placed. Attach red streamers outside
of the sealed areas.
8. Installed preserved engines should be conspicuously tagged: "DO NOT TURN PROPELLER-ENGINE
PRESERVED". Preservation Date
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11-5 RETURNING ENGINE TO SERVICE
1. Remove the cylinder dehydrator plugs, tape, desiccant bags and streamers.
2. Drain the preservative oil and re-service with recommended lubricating oil.
3. Remove bottom plugs; rotate propeller to clear preservative oil from the cylinders.
WARNING ... When returning the aircraft to service do not use the corrosion preventive oil
reference on Section 11-3 paragraph 1.a for more than 25 hours.
4. Re-install the spark plugs and rotate the propeller by hand several revolutions to check for possible liquid
lock. Start the engine.
5. Give the aircraft a thorough visual inspection and test flight per airframe manufacturer's instructions.
11-6 INDEFINITE STORAGE INSPECTION PROCEDURES
Aircraft prepared for indefinite storage should have the cylinder dehydrator plugs visually inspected every
30 days. The plugs should be changed as soon as their color changes. If the dehydrator plugs have
changed color in one-half or more of the cylinders, all desiccant material on the engine should be replaced.
The cylinder bores of all engines prepared for indefinite storage should be re-sprayed with corrosion
preventive oil every six (6) months, or less. Replace all desiccant and dehydrator plugs. Before spraying, the
engine should be inspected for corrosion as follows: Inspect all cylinders through the spark plug hole. If
cylinder exhibits rust stains, spray cylinder corrosion preventive oil and turn prop over six times, then re-
spray all cylinders.
The above procedures are a general recommendation for our customers. Since local conditions differ and
Teledyne Continental Motors has no control over the application, more stringent procedures may be
required. Rust and corrosion prevention are the owner's responsibility.
11-4