AIRCRAFT
Hydraulic Power
DA 42 NG AMM
Trouble
Possible Cause
Repaired Items/References
Page 102
15 Mar 2018
29-10-00
Doc # 7.02.15
Rev. 4
Hydraulic pump is not working
(landing gear is moving until
the accumulator is empty).
S
Relay is damaged. Check if
relay is switching correctly.
S
Landing gear switch
damaged. Check fuses,
electric power supply and
cables.
S
Hydraulic pump defect.
Replace the relay.
Replace landing gear switch.
Check hydraulic pump and
replace if damaged.
Landing gear is retracting too
slow.
Dump valve is not fully closed
(high re-pump cycles).
Close dump valve. Tighten
hexagon socket with 6 - 10 Nm
(4.4 - 7.4 lbf.ft.). Tighten
counter nut with 8 Nm
(5.9 lbf.ft.).
See Figure 1.
Poor motor/pump performance.
S
Power supply low.
Check power supply.
Top solenoid valve is switched
ON (i.e. differential pressure
mode is OFF).
S
Electrical fault.
S
Mechanical fault.
Check cables, connectors and
power supply of the solenoid
valve.
Replace solenoid valve or main
control block. Refer to Section
29-10.
Summary of Contents for DA 42 NG
Page 933: ...AIRCRAFT DA 42 NG AMM Fuel Doc 7 02 15 Rev 4 28 TITLE Page 1 15 Mar 2018 CHAPTER 28 FUEL ...
Page 1459: ...AIRCRAFT DA 42 NG AMM Lights Doc 7 02 15 Rev 4 33 TITLE Page 1 15 Mar 2018 CHAPTER 33 LIGHTS ...
Page 1711: ...AIRCRAFT DA 42 NG AMM Doors Doc 7 02 15 Rev 4 52 TITLE Page 1 15 Mar 2018 CHAPTER 52 DOORS ...
Page 1853: ...AIRCRAFT DA 42 NG AMM Wings Doc 7 02 15 Rev 4 57 TITLE Page 1 15 Mar 2018 CHAPTER 57 WINGS ...
Page 2071: ...AIRCRAFT DA 42 NG AMM Engine Doc 7 02 15 Rev 4 72 TITLE Page 1 15 Mar 2018 CHAPTER 72 ENGINE ...
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