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9 Cards in this Set
- Front
- Back
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What 2 fluids flow through the fuel heater strainer? |
Fuel and oil |
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What action must be carried out before servicing the fuel heater strainer? |
Fire handle and relevant CB must be pulled to close Eng firewall fuel shutoff valve |
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What are 2 faults that could cause fuel flow but no ignition? |
- HEIU failure - Igniters failure - Manifold drain valve open |
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What are 2 functions of the FCU secondary check valve? |
- Prevents reverse flow of secondary pump back to secondary pump inlet if primary pump fails - Provides alternative inlet to primary pump if secondary pump fails |
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What fuel system component is bypassed in the event of scroll pump failure? |
LP filter |
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What are 2 causes of parallel light staying on above 65% rpm? |
- Primary pump failure - Paralleling pressure switch failure - Speed sense control failure - Paralleling valve jammed shut |
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At what rpm % are the fuel pumps in series? |
0-16%, and at 65% and above |
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What are the indications of primary pump failure? |
Paralleling light will stay on |
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What component in the FCU is bypassed during fuel enrichment? |
Metering valve |
