AIRCRAFT
DA 42 NG AMM
Hydraulic Power
Detail Steps/Work Items
Key Items/References
Doc # 7.02.15
Rev. 4
29-10-00
Page 231
15 Mar 2018
(6)
Switch to permanent differential pressure mode:
S
Remove the electrical plug from the upper
solenoid valve.
This causes the hydraulic system to
stay in differential pressure mode.
Refer to Figure 4 to see the solenoid
valve.
(7)
Drain fluid from the hydraulic system.
Refer to Section 29-10.
This is important because when testing
the hydraulic system, fluid gets pumped
into the system and can cause an
overflow.
(8)
Install the hand pump:
S
Remove the protection cap from the
MiniMess 1215 plug.
S
Install the hand pump onto the plug.
The MiniMess 1215 plug is situated on
the hydraulic control block.
Refer to Figure 4.
If your hydraulic system is an old
revision without the MiniMess 1215 plug
contact the vendor to get it installed.
Note:
Make sure to use clean hydraulic fluid with the hand pump for testing
the hydraulic system. Don't overfill the hydraulic reservoir by pumping
too much hydraulic fluid with the hand pump into the system.
(9)
Adjust the pressure limitation valve of the hand
pump to 190 bar (2775 PSI).
(10)
Check for external/internal leakage:
S
Increase the pressure with the hand pump in
the hydraulic system to 170 bar (2466 PSI).
S
Keep this pressure for 5 minutes and check
for any pressure decrease.
S
Use checklist for leakage test.
The pressure should stay at
170 (+0, -5) bar (2466 [+0, -72] PSI).
If the pressure drops below 165 bar
(2393 PSI) and there is no external
leakage visible it can be assumed that
there is an internal leakage. Please
contact after sales support at Diamond
Aircraft.
Refer to Paragraph D (Checklist for
external leakage).
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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