ICON A5, Maintenance Manual

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16-20 PROPULSION / ENGINE
ICON A5 / MAINTENANCE MANUAL CHANGE C2
CHAP
TER
16
5. Use an 11/16 wrench to disconnect the -6 fuel supply and return lines at fuel rails and cap
exposed ports.
6. Remove band claps at both ends of the induction air duct, remove duct and install a dust cap over
throttle valve and air filter openings.
7. Burp engine oil. (See “Engine Oil Check and Replenish” on page 16-77.)
8. Drain engine oil. (See “Engine Oil Check and Replenish” on page 16-77.)
9. Remove the six AN5C20A bolts and MS21043-5 nuts that attach the prop shaft extension to
engine prop shaft flange, then remove propeller, extension and fan as an assembly from aircraft.
10. Remove the two hoses at the lower side of the oil thermostat, using a 13/16 wrench to hold the
union fitting in the thermostat and a 7.8 wrench to turn the B-nuts. Remove the upper hose (going
to the oil tank) first, followed by the lower hose (going to the oil pump). Cap all openings.
11. Disconnect throttle cable from engine throttle valve.
12. Using a 7/8 wrench on the B-nut, remove the oil hose at the “IN” port of the oil tank and a cap the
openings.
13. Drain coolant. (See “Engine Coolant Replacement” on page 16-57.)
14. Remove the band clamps and disconnect the two coolant hoses from right and left side of radi-
ator, and two coolant hoses at forward lower center of firewall bulkhead.
15. Remove the hose clamps and insulating tape wrap at the three firewall cable pass-throughs.
16. Disconnect the grounding wire on the forward face of the alternator cover.
17. Remove the aft bulkhead baggage panel.
18. Disconnect the three ECU connectors on ECU.
19. Unplug the fuel pump connectors in between the main bulkheads located near lower center of
aft bulkhead.
20. Disconnect the regulator connectors, one on each side of fuse box.
21. Disconnect the three cannon plugs on top of fuse box.
22. Disconnect the engine harness from studs on both sides of fuse box and label them.
23. Install the ITL-902 Engine Hoist End Effector on the on the engine per the tool’s instructions.
CAUTION
:
Do not use the fuel line assembly to lift the engine.
24. Support the weight of the engine using a properly rated engine hoist connected to the ITL-902.
25. Remove the forward engine mount to airframe bolts and label them.
26. Remove the aft engine mount to airframe bolts, nuts, and washers and label them.
27. Pull the engine electrical harnesses through the firewall pass-throughs until they are clear of the
firewall.
28. Lift the engine up and clear of the airframe ensuring that nothing remains connected or snags.
29. Remove the four sets of 94150-40 rubber engine mount isolators and label them.