- do a check of all connections and components on the
 reservoir for leaks.
 - If you find a leak:
 - tighten the related nut or replace the defective
 component.
 c If the fault continues:_
 - replace the CHECK VALVE-RSVR PRESS, Y (3388GM). 
R 
R  2_  If the air pressure drop is in the limits:
R  a Depressurize the hydraulic reservoirs (Ref. AMM TASK 29-14-_ 
R  00-614-001). 
R  b Pressurize the reservoir pressurization system with the_ 
R  left engine (Ref. AMM TASK 29-14-00-720-002), or 
R  c Connect an external pressure source:_ 
R  - disconnect the reservoir pressurization hose (1674GM) 
R  from the HP bleed-air port of the left engine (Ref. AMM 
R  TASK 29-14-49-000-001) 
R  - connect an approved air or nitrogen inflation adaptor to 
R  the line end fitting of the reservoir pressurization hose 
R  (1674GM) 
R  - pressurize the reservoir pressurization system to 
R  approximately 15.2 bar (220 psi). 
R  d If the pressure in the reservoir does not increase to the_ 
R  necessary value: 
R  - remove the RESTRICTOR- RSVR PRESS, ENG 1 BLEED (1392GM) 
R  (Ref. AMM TASK 29-14-13-000-001). 
R  - make sure that the RESTRICTOR- RSVR PRESS, ENG 1 BLEED 
R  (1392GM) and the filter are not clogged or damaged. 
R  - if necessary, replace the RESTRICTOR- RSVR PRESS, ENG 1 
R  BLEED (1392GM) (Ref. AMM TASK 29-14-13-400-001). 
R  e If the fault continues:_ 
R  - do a check and, if necessary, repair the bleed air line 
R  in the left pylon to the Reservoir Pressurization Unit 
R  (1360GM). 
R  f If the fault continues:_ 
R  - do a check and, if necessary, repair the remaining bleed 
R  air lines and components. 
R  g Stop the pressurization of the reservoir pressurization_ 
R  system from the left engine (Ref. AMM TASK 29-14-00-720-
R  002), or

 「一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一1 EFF : ALL ∞∞29-13-00∞∞∞∞∞∞∞∞∞∞Page 218
 Aug 01/01 CES

R R R R R R  h_  Disconnect the external pressure source:- disconnect the inflation adaptor from the reservoir pressurization hose (1674GM) - connect the reservoir pressurization hose (1674GM) to the HP bleed-air port of the left engine (Ref. AMM TASK 29-14-49-400-001). 
R  i_ If the air pressure in the reservoir increases to the necessary value and the air pressure drop is within the limits:
 - no further actions are necessary.
 B. Do the operational test of the low air pressure warning (Ref. AMM TASK 29-34-00-710-001) to make sure that operation is correct (no maintenance message shown).

 「一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一1 EFF : ALL ∞∞29-13-00∞∞∞∞∞∞∞∞∞∞Page 219
 Aug 01/01 CES

 TASK 29-13-00-810-804

 Loss of the Pressure of the Eng 2 Pump
 1. Possible Causes
_______________

 - PUMP-Y, ENG 2 (3030GD)

 - PRESS SW-Y PUMP, ENG 2 (3074GD)

 - ENG 2 PUMP P/BSW (3703GD)

 - wiring

 2. Job Set-up Information
______________________
 A. Referenced Information
 -------------------------------------------------------------------------------
REFERENCE  DESIGNATION
 -------------------------------------------------------------------------------
AMM 29-00-00-280-006  Check of the Green or Yellow Hydraulic System after Operation in a Possible Cavitation Condition of the Engine Pump
 AMM 29-13-00-710-002 Operational Test of the Yellow Hydraulic System AMM 29-13-17-000-040 Removal of the Engine-Pump Pressure Switch (3074GD) AMM 29-13-17-400-040 Installation of the Engine-Pump Pressure Switch
 (3074GD)

R  AMM 29-13-51-000-004 Removal of the Yellow Engine Pump (3030GD)
R  AMM 29-13-51-400-004 Installation of the Yellow Engine Pump (3030GD) ASM 29-13/01
 3. Fault Confirmation
__________________

 A. Do the operational test of the Yellow hydraulic system (Ref. AMM TASK 29-13-00-710-002).
 4. Fault Isolation
_______________