85-40-50 Exposure of timing chain and camshaft chain wheel
For detailed information use the maintenance manuals of aircraft and engine.
Remove the following components from the top of the engine to expose the chain drive:
• Intake air hoses (refer to Aircraft Maintenance Manual).
• Fuel lines (refer to Aircraft Maintenance Manual).
• Wiring harness – refer to Chapter 71-50-170
• Plugs connected to engine components, which have to be removed. Therefore certain
cables have to be loosened by removing cable retainers with a nipper.
• Injector cover – refer to Chapter 85-00-11
• Injectors – refer to Chapter 73-00-11
Mark the cylinder number onto the injector and the fuel line accordingly in order to place it back
in the same order during re-assembly. To protect the injectors from dust and contamination put
the injectors in plastic bags.
• Cylinder head cover. Therefore all screws (indicated with “S” for short screws and “L”
for the long screws in the figure below) have to be removed.
Fig. 85 - 102 Cylinder head cover
• Lubrication line – refer to Chapter 79-00-101.
• Oil returning line – refer to Chapter 79-00-111.
• Housing for sensor E4-A-22-000-000. Therefore remove three screws. The screws
cannot be re-used.
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