85-20-00 Reciprocating Engine Power Section
85-20-10 Crankshaft Cover
For removal and installation of the crankshaft cover the engine has to be removed from the aircraft.
85-20-11 Removal of the Crankshaft Cover
1. Drain coolant – refer to the applicable Aircraft Maintenance Manual.
2. Drain engine oil – refer to Chapter 79-00-20.
3. Remove the engine from the aircraft – refer to the applicable Aircraft Maintenance
Manual.
4. Remove the gearbox - refer to Chapter 85-10-11.
5. Remove the two-mass-flywheel – refer to Chapter 85-10-61.
6. Remove the oil sump – refer to Chapter 79-00-41.
7. Remove the screws [1] of the crankshaft cover.
8. Remove the crankshaft cover [2].
85-20-12 Installation of the Crankshaft Cover
1. Clean the sealing ring contact surface on the crankcase with a fibre-free cloth.
2. Mount the crankshaft cover [2] with the mounting sleeve [3] and tight the 6 screws
[1] with 9 Nm.
The cover has to be installed without any kind of fluid or lubricant.
3. Look out for correct horizontal alignment of the crankshaft cover with the crankcase
at position 4 in the picture below.
4. Remove the mounting sleeve [3]
5. Clean the sealing surface for oil sump.
6. Apply engine sealing material at the joint [4].
The recommended engine sealing material is available at Austro Engine GmbH.
Refer to the consumeable list for details.
7. Use new oil sump gasket.
8. Install the oil sump – refer to Chapter 79-00-42.
Don’t damage the crankshaft sensor.
9. Install two-mass-flywheel - refer to Chapter 85-10-62.
10. Install the gearbox – refer to Chapter 85-10-12.
11. Install the engine - refer to the applicable Aircraft Maintenance Manual.
12. Refill engine oil – refer to Chapter 79-00-30.
13. Refill coolant – refer to the applicable Aircraft Maintenance Manual.
For coolant information please refer to Chapter 05-20-17 Coolant
14. Clean the working area.
15. Perform an engine ground run according to Chapter 71-00-03.
16. After the ground run inspect engine fluid systems for leakage.
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