R 3_ If the fault continues:
R - make sure that the wiring is not connected to GND between:
R LOW LEVEL SWITCH connector B/B and DIODE (1156VD) connector
R 37 (Ref. ASM 29-13/01) and (Ref. ASM 29-31/02).

R a_ If the wiring is connected to GND:
R - repair the wiring as necessary.

R (3) Make sure that the drain valve of the hydraulic reservoir has no
R leaks.

R (a) If the drain valve has a leak:
R - replace the drain valve.

R (b) If the drain valve has no leaks:
R - do a check of the hydraulic lines and components for leaks
R (Ref. AMM TASK 29-00-00-790-001) and repair them.

R (c) If the fault continues:
R - do a check of the internal leakage of the Yellow hydraulic
R system (Ref. AMM TASK 29-00-00-280-003).

R 1_ If the internal leakage rate is too high:
R - repair the defective component.

R 2_ If the fault continues, or you can not find a defective
R component:

 「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 205
 Feb 01/02 CES

R - remove a fuel sample from each water drain-valve (Ref. AMM
R TASK 12-32-28-281-001),
R - do a check for contamination of the fuel with hydraulic
R fluid after each removal of a fuel sample.

R  a_  If you find hydraulic fluid contamination in one or more
R  fuel samples: 
R  - do a check of the hydraulic lines and components in the 
R  applicable tank area for leaks and repair them. 
R 

R C. If the Fault Confirmation gives:
 -the message HYD Y RSVR LO LVL on the upper ECAM DU,
 -the PTU P/BSW FAULT on panel 40VU,
 -the YELLOW ENG 2 PUMP P/BSW FAULT on panel 40VU:

 - do a visual check of the quantity shown on the mechanical indicator of the Yellow reservoir.
R (1) If the quantity shown is less than 2.6 l (0.6868 USgal):
 (a) Do a check of the engine pump for a possible cavitation condition (Ref. AMM TASK 29-00-00-280-006).
 NOTE : A cavitation condition of the engine pump is possible when
____ the engine pump operates with the engine pump fire valve closed (if you set the ENG 1 (2) FIRE pushbutton on the Eng/APU fire panel), or with the reservoir below the low level (ECAM indication).
 (b) Replace the QUANTITY INDICATOR - TRANSMITTER (Ref. AMM TASK 29-13-41-000-003) and (Ref. AMM TASK 29-13-41-400-003).
 (2) Make sure that the drain valve of the hydraulic reservoir has no leaks.
 (a) If the drain valve has a leak:

 - replace the drain valve.

 (b) If the drain valve has no leaks:

 - do a check of the hydraulic lines and the components for leaks (Ref. AMM TASK 29-00-00-790-001) and repair them.

 (c) If the fault continues:

 - do a check of the internal leakage of the Yellow hydraulic system (Ref. AMM TASK 29-00-00-280-003).
 1 If the internal leakage rate is too high:
_ - repair the defective component.

 「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 206
 Feb 01/02 CES 2 If the fault continues, or you can not find a defective

_
 component:

 - remove a fuel sample from each water drain-valve (Ref. AMM TASK 12-32-28-281-001),

 - do a check for contamination of the fuel with hydraulic fluid after each removal of a fuel sample.

 a If you find hydraulic fluid contamination in one or more
_
 fuel samples:

 - do a check of the hydraulic lines and components in the applicable tank area for leaks and repair them.
R D. Do the operational test of the fluid low level warning (Ref. AMM TASK 29-31-00-710-001) to make sure that the operation is correct (no 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 207
 Feb 01/02 CES

 INTENTIONALLY BLANK

 「一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一1R ∞∞29-13-00∞∞∞∞∞∞∞∞∞∞Page 208
 Feb 01/02 CES

 TASK 29-13-00-810-802
 Overheat Indication of the Yellow Hydraulic System
 1. Possible Causes
_______________

 - XMTR-TEMP, Y RSVR (3381GR)

 - CHECK VALVE- ELEC PUMP DELIVERY, Y (3083GM)
　
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