D. Close Access
 (1) Close the fan cowl doors (Ref. TASK 71-13-00-410-040):
 FOR 1000EM1
 437AL, 438AR
 FOR 1000EM2
 447AL, 448AR

 (2) Remove the access platform(s).

 (3) Remove the warning notice(s). Subtask 78-31-51-614-057
 E. Pressurize the aircraft hydraulic systems.
 (1) For engine 1 pressurize the Green hydraulic reservoir (Ref. TASK 29-14-00-614-002).

 (2) For engine 2 pressurize the Yellow hydraulic reservoir (Ref. TASK 29-14-00-614-002).

 Subtask 78-31-51-710-057
 F. Bleed the air from the thrust reverser hydraulic system (Ref. TASK 78-30-00-710-040).
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____________________________________________________
 TASK 78-31-51-210-040
 Detailed Visual Inspection of the Hydraulic Control Unit
 1. Reason for the Job
__________________
 Self Explanatory
 2. Job Set-up Information
______________________
 A. Fixtures, Tools, Test and Support Equipment
 -------------------------------------------------------------------------------REFERENCE QTY DESIGNATION
 -------------------------------------------------------------------------------
No specific warning notice
 No specific access platform 1 m (3 ft. 3 in.)

 B. Referenced Information
 -------------------------------------------------------------------------------REFERENCE DESIGNATION -------------------------------------------------------------------------------
71-13-00-010-040 Opening of the Fan Cowl Doors 71-13-00-410-040 Closing of the Fan Cowl Doors 78-30-00-081-041 Make the Thrust Reverser Serviceable after
 Maintenance 78-30-00-481-041 Make the Thrust Reverser Unserviceable for
 Maintenance 78-31-51-000-042 Removal of the Hydraulic Control Unit 78-31-51-400-042 Installation of the Hydraulic Control Unit 78-36-00-010-040 Opening of the Thrust Reverser Doors 78-36-00-410-040 Closing of the Thrust Reverser Doors 78-31-51-991-302 Fig. 601
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 3. Job Set-up
__________
 Subtask 78-31-51-941-053
 A. Safety Precautions
 (1) On the center pedestal, on the ENG panel 115VU:

 (a) Put a warning notice to tell persons not to start the engine.

 (2) Make sure that the engine 1(2) shutdown occurred not less than 5 minutes before you do this procedure.

 (3) On the overhead maintenance panel 50VU:

 (a) Make sure that the ON legend of the ENG/FADEC GND PWR/1(2) pushbutton switch is off.

 (b) Put a warning notice to tell persons not to energize the FADEC 1(2).

 Subtask 78-31-51-010-056
 B. Get Access
 (1) Open the fan cowl doors: (Ref. TASK 71-13-00-010-040)
 FOR 1000EM1
 437AL, 438AR
 FOR 1000EM2
 447AL, 448AR

 (2) Put the access platform in position.

 Subtask 78-31-51-040-052
 C. Make the thrust reverser unserviceable (Ref. TASK 78-30-00-481-041).
 Subtask 78-31-51-010-057
 D. Open the thrust reverser doors: (Ref. TASK 78-36-00-010-040)
 FOR 1000EM1
 451AL, 452AR
 FOR 1000EM2
 461AL, 462AR

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_________
 (Ref. Fig. 601/TASK 78-31-51-991-302)
 Subtask 78-31-51-210-051
 A. Do a visual inspection of the hydraulic control unit as follows:
 -------------------------------------------------------------------------------INSPECT/CHECK MAXIMUM REMARKS SERVICEABLE LIMITS -------------------------------------------------------------------------------
1. Examine the hydraulic control unit for:
 A. Damage  No damage permitted If you find some damage, replace the hydraulic control unit (Ref. TASK 78-31-51-000-042) and (Ref. TASK 78-31-51-400-042).
 B. Crack  No crack permitted If you find a crack, replace the hydraulic control unit (Ref. TASK 78-31-51-000-042) and (Ref. TASK 78-31-51-400-042).
 C. Leakage  No leakage permitted If there is leakage, check the coupling nuts and nipples for the correct torque (Ref. TASK 78-31-51-400-042). If the leakage persists, replace the preformed packing (Ref. TASK 78-31-51-000-042) and (Ref. TASK 78-31-51-400-042). If the leakage persists, replace the nipples (Ref. TASK 78-31-51-000-042) and (Ref. TASK 78-31-51-400-042).
　
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