SECTION 4
LYCOMING OPERATOR’S MANUAL
PERIODIC INSPECTIONS
TIO-540 SERIES – ANGLE VALVE CYLINDER HEADS
Check for accumulation of dirt or other interference with the linkage between the bypass valve and
the actuator which may impair operation of turbocharger. Clean or correct cause for interference.
The vent line from the actuator should be checked for oil leakage. Any constant oil leakage is cause
for replacement of piston seal.
Check alternate air valve to be sure it swings free and seals tightly.
6. 100-HOUR INSPECTION.
In addition to the items listed for daily pre-flight and 50-hour inspection, the
following maintenance checks should be made after every 100 hours of operation.
a. Electrical System –
(1) Check all wiring connected to the engine or accessories. Any shielded cables that are damaged
should be replaced. Replace clamps or loose wires and check terminals for security and
cleanliness.
(2) Remove spark plugs; test, clean and regap. Replace if necessary.
b. Lubrication System –
Drain and renew lubricating oil.
c. Magnetos
Check breaker points for pitting and minimum
gap. Check for excessive oil in the breaker
compartment; if found, wipe dry with a clean lintless cloth. The felt located at the breaker points
should be lubricated in accordance with the magne
to manufacturers instruct
ions. Check magneto to
engine timing. Timing procedure is described in Section 5, 1, b of this manual.
NOTE
Engines equipped with pressurized ignition system should be checked using the Bendix
Model 11-10090 airflow tester as described in latest revision of Service Instruction No. 1308.
d. Engine Accessories
Engine mounted accessories such as pumps, temperature and pressure sensing
units should be checked for secure mounting, tight connections.
e. Cylinders –
Check cylinders visually for cracked or broken fins.
f.
Engine Mounts –
Check engine mounting bolts and bushings for security and excessive wear. Replace
any bushings that are excessively worn.
g. Fuel Injector Nozzles and Lines –
Check fuel injector nozzles for looseness. Tighten to 60 in.-lbs.
torque. Check fuel line for dye stains at connections (indicating linkage) and security of lines. Repair
or replacement must be accomplished before aircraft resumes operation.
h. Turbocharger –
Inspect all air ducting and connections in turbocharger system for leaks. Make
inspection both with engine shut down and with engine running. Check at manifold connections to
turbine inlet and at engine exhaust manifold gasket, for possible air leakage.
4-4
Содержание TIO-540-A1A
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