Page 1 of 1

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

PostPosted: 11 Apr 2021, 22:00
by Getnet
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?

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

PostPosted: 16 Apr 2021, 16:47
by cordesco
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.

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

PostPosted: 18 Apr 2021, 09:18
by Getnet
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.