ICON A5 MM : Propulsion : Engine : Engine General Maintenance : Engine Removal
Engine Removal
100151-00
This task should be used to safely remove the engine from the aircraft.
Applicable Aircraft Serial Numbers
All
Type of Maintenance
Heavy
Level of Certification
LSA-RM
Task Specific Training Required
No
Specific Tools Required
3/8” Anchor Shackle (x2)
Parts Required
None
Aircraft System and Number
13—Propulsion
Safety Equipment
As Needed
Consumables
None
Task Instructions
1. Disconnect all electrical connections to ship’s battery ground terminal.
2. Remove entire cowling. (Remove Engine Cowlings)
Note: 
If desired, take photos to ensure proper routing of systems on engine re-installation.
3. Disconnect signal and ground wires at starter solenoid.
4. Disconnect AAPTS sensor connector (near induction air filter).
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. (Engine Oil Check and Replenish)
8. Drain engine oil. (Engine Oil Check and Replenish)
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. (Engine Coolant Replacement)
14. Remove the band clamps and disconnect the two coolant hoses from right and left side of radiator, 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 3/8” Anchor Shackle (x2) 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 3/8” Anchor Shackle (x2).
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.
30. Set the engine into a Rotax 912 iS shipping pallet or other suitable surface and remove the hoist tool.
31. Bag and label all loose parts and cover and protect the engine.
Verification Method
Verify security of engine (Rotax 912 iS) on shipping pallet. check that disconnected electrical cables are properly isolated and check that disconnected fluid connections are secured and not leaking.