Lycoming TIO-540-A1A, Operator'S Manual

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LYCOMING OPERATOR’S MANUAL SECTION 3
TIO-540 SERIES – ANGLE VALVE CYLINDER HEADS OPERATING INSTRUCTIONS
(1) Best Economy Cruise – Lean to peak turbine inlet temperature (TIT) or 1650°F, whichever
occurs first.
(2) Maximum Power Cruise – The engine must always be operated on the rich side of peak TIT.
Before leaning to obtain maximum power mixture it is necessary to establish a reference point.
This is accomplished as follows:
(a) Establish a peak TIT for best economy operation at the highest economy cruise power without
exceeding 1650°F.
(b) Deduct 125°F from this temperature and thus establish the temperature reference point for use
when operating at maximum power mixture.
(c) Return mixture control to full rich and adjust the RPM and manifold pressure for desired
performance cruise operation.
(d) Lean out mixture until TIT is the value established in Step (b). This sets the mixture at best
power.
2. LEANING TO FLOWMETER.
Lean to applicable fuel-flow tables or lean to indicator marked for correct fuel-flow for each power
setting.
3. LEANING WITH MANUAL MIXTURE CONTROL (Without flowmeter or TIT gage).
a. Slowly move mixture control from “Full Rich” position toward lean position.
b. Continue leaning until slight loss of power is noted (loss of power may or may not be accompanied by
roughness).
c. Enrich until engine runs smoothly and power is regained.
8. ENGINE FLIGHT CHART.
FUEL – *Aviation Grade Fue l
All Models 100/100LL octane minimum
* - Refer to the latest revision of Service Instruction No. 1070.
OIL – (All Models) –
*Recommended Grade Oil
MIL-L-22851
Average Ambient MIL-L-6082B Ashless Dispersant
Temperature SAE Grades SAE Grades
All temperatures --- 15W-50 or 20W-50
Above 80°F 60 60
Above 60°F 50 40 or 50
30°F to 90°F 40 40
0°F to 70°F 30 30, 40 or 20W-40
Below 10°F 20 30 or 20W-30
* - Refer to latest revision of Service Instruction No. 1014.
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