Hirth 2704E aircraft engine manual

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1Description of the Engine, Mounting Instructions and Technical Data.....................................................5

1.1 Overview...........................................................................................................................................5

1.2 Description of the fuel injection system.............................................................................................5

1.3 Description of the Ignition System....................................................................................................6

1.4 Description of the cooling system......................................................................................................7

1.5 The engine?s fuel injection components............................................................................................7

2Installation instructions............................................................................................................................11

2.1 Mounting and securing the engine...................................................................................................11

2.2 Fuel Injection Electrical installation:...............................................................................................11

2.3 Hydraulic Installation:.....................................................................................................................12

2.4 Fuel injection installation................................................................................................................12

2.5 Additional Steps For A More Effective Engine Operation:.............................................................13

2.6 The engine?s air supply....................................................................................................................13

2.7 Cylinder head temperature...............................................................................................................14

2.8 Exhaust gas temperature..................................................................................................................14

2.9 Fuel Pressure...................................................................................................................................16

2.10 Model Identification plate...........................................................................................................16

3Specifications ? 2704E engine................................................................................................................17

3.1 Installation Drawing - 2704E...........................................................................................................17

4Operation of the Engine...........................................................................................................................18

4.1 General............................................................................................................................................18

4.2 Running in - Recommendation........................................................................................................18

4.3 Initial Inspection..............................................................................................................................18

4.4 Starting the engine for the first time................................................................................................19

4.5 Normal engine starting procedure....................................................................................................19

4.6 Operating condition of the engine....................................................................................................20

4.7 Powering down the engine...............................................................................................................20

5Maintenance............................................................................................................................................21

5.1 General............................................................................................................................................21

5.2 Tools, special tools and torques.......................................................................................................21

5.3 Maintenance rate - Daily inspections...............................................................................................21

5.4 Periodic Inspections.........................................................................................................................22

5.5 Replacement of Parts.......................................................................................................................22

5.6 Adjustments.....................................................................................................................................23

5.7 Inspecting the air filters...................................................................................................................23

5.8 Inspecting the fuel lines...................................................................................................................24

5.9 Inspecting pulsation lines.................................................................................................................24

5.10 Spark plugs and sparkplug leads..................................................................................................24

5.11 Inspecting the condition of the sparkplug leads...........................................................................24

5.12 Installing and removing sparkplugs.............................................................................................24

5.13 Condition of the sparkplug..........................................................................................................24

5.14 Fan...............................................................................................................................................24

5.15 Remove and assembling the air cowl...........................................................................................24

5.16 Remove and assembling the fan housing.....................................................................................25

5.17 Changing the fan belt...................................................................................................................25

5.18 Cylinder head...............................................................................................................................25

5.19 Cylinder head removal and installation.......................................................................................25

5.20 Checking the condition of the cylinder head................................................................................25

6Trouble Shooting.....................................................................................................................................26

6.1 Engine Does Not Start or is Difficult to Start..................................................................................26

6.2 Engine will not Idle.........................................................................................................................26

6.3 Engine Runs Rough, Uneven, and with Insufficient Power.............................................................26

6.4 Engine Does Not Develop Full Power.............................................................................................27

6.5 Excessive Cylinder Head Temperature............................................................................................27

7Exhaust System........................................................................................................................................28

7.1 Exhaust parts and measurements.....................................................................................................29

8Wiring Diagrams.....................................................................................................................................30

8.1 Single PVL Ignition system - 2704E...............................................................................................31

8.2 Dual PVL ignition system ? 2704E.................................................................................................32