AFTER ENGINE SHUT DOWN THE EDP IS STEEL SHOUING US 3000PSI

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AFTER ENGINE SHUT DOWN THE EDP IS STEEL SHOUING US 3000PSI

Postby Getnet » 11 Apr 2021, 22:00

Hello Dears
One of our B737 aircraft after engine shutdown with the normal procedure the EDP hydraulic pressure is read steal 300psi what is the problem?
Getnet
 
Posts: 2
Joined: 04 Oct 2020, 19:17

Re: AFTER ENGINE SHUT DOWN THE EDP IS STEEL SHOUING US 3000P

Postby cordesco » 16 Apr 2021, 16:47

1) GET ACESS TO THE PLUGS DP1204 AND DP1234, CLEAN THEM IF CONTAMINATED BY HYDRAULIC FLUID .

2) CHECK FOR CONTINUITY BETWEEN THOSE PLUGS ACCORDING TO WDM 29-11-11. REPLACE HARNESS MW0312 IF NECESSARY IAW AMM 71-51-03/401.

NOTE: THE FAULTY IS USUALLY BETWEEN PIN 19 TO B AND PIN 36 TO A.

3) RELACE EDP IF NO WIRING FAULTS ARE FOUND.
cordesco
 
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Joined: 22 Nov 2019, 00:34

Re: AFTER ENGINE SHUT DOWN THE EDP IS STEEL SHOUING US 3000P

Postby Getnet » 18 Apr 2021, 09:18

Thank you Cordesco your suggestion is very helpful the problem is solved after we change the depressurization solenoid valve it part of the EDP.
I follow the step what you are Mentioned above
(1) performed cleaning of DP1204 AND DP1234 plugs.
(2)Checked Continuity and the harness is ok.
(3)Before I go to EDP change I performed Depressurization solenoid vale Replacment and then the problem is solved.

Thank you for your help that what professional mean.
Getnet
 
Posts: 2
Joined: 04 Oct 2020, 19:17


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