R (2) If the quantity shown is less than 3.5 l (0.9245 USgal):
R (a) Do a check of the engine pump for a possible cavitation condition
R (Ref. AMM TASK 29-00-00-280-006).
R NOTE : A cavitation condition of the engine pump is possible when
____ R the engine pump operates with the engine pump fire valve R closed (if you set the ENG 1 (2) FIRE pushbutton on the R Eng/APU fire panel), or with the reservoir below the low R level (ECAM indication).
R (b) Make sure that the drain valve of the hydraulic reservoir has no
R leaks.
R 1_ If the drain valve has a leak:
R - replace the drain valve.
R 2_ If the drain valve has no leaks;
R - do a check of the hydraulic lines and the components for
R leaks (Ref. AMM TASK 29-00-00-790-001) and repair them.
R 3_ 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 a_ If the internal leakage rate is too high:
R - repair the defective component.
R b_ If the fault continues, or you can not find a defective
R component:
R - remove a fuel sample from each water drain-valve (Ref.
R AMM 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 c_ 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.
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Feb 01/02 CES B. If the Fault Confirmation gives:
-the message HYD Y RSVR LO LVL on the upper ECAM DU,
-the contents indication (shows low fluid level) on the lower ECAM DU in
amber:
Do a visual check of the quantity shown on the mechanical indicator of
the Yellow reservoir.
R (1) If the quantity shown is more than or equal to 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) Do a check for 26 VAC between: QUANTITY INDICATOR - TRANSMITTER connector A/D and connector A/E (Ref. ASM 29-31/01).
1 If there is no 26 VAC:
_
- do a check of the wiring between: QUANTITY INDICATOR - TRANSMITTER connector A/D and CB (1831GQ) and repair the wiring as necessary (Ref. ASM 29-31/01).
2 If the fault continues:
_
- do a check for a ground signal between: QUANTITY INDICATOR - TRANSMITTER connector A/E and ground (Ref. ASM 29-31/01).
a If there is no ground signal:
_ - repair the wiring between QUANTITY INDICATOR -TRANSMITTER connector A/E and ground (Ref. ASM 29-31/01).
(c) If the fault continues:
- replace the QUANTITY INDICATOR - TRANSMITTER (Ref. AMM TASK 29-13-41-000-003) and (Ref. AMM TASK 29-13-41-400-003).
(d) If the fault continues:
- do the troubleshooting procedure for the loss of the YELLOW RSVR QTY input of the SDAC-1 (1WV1) (Ref. TASK 31-54-00-810-835).
1 If the fault continues:
_
- do the troubleshooting procedure for the loss of the YELLOW RSVR QTY input of the SDAC-2 (1WV2) (Ref. TASK 31-54-00-810-836).
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Feb 01/02 CES
R (2) If the quantity shown is less than 2.6 l (0.6868 USgal):
R (a) Do a check of the engine pump for a possible cavitation condition R (Ref. AMM TASK 29-00-00-280-006).
R NOTE : A cavitation condition of the engine pump is possible when
____ R the engine pump operates with the engine pump fire valve R closed (if you set the ENG 1 (2) FIRE pushbutton on the R Eng/APU fire panel), or with the reservoir below the low R level (ECAM indication).
R (b) Do a check for 28 VDC between:
R LOW LEVEL SWITCH connector B/A and connector B/C (Ref. ASM 29-R 31/02).
R 1_ If there is no 28 VDC:
R - do a check of the wiring between:
R LOW LEVEL SWITCH connector B/C and CB (1832GQ) and repair
R the wiring as necessary (Ref. ASM 29-31/02).
R 2_ If there is 28VDC:
R - replace the LOW LEVEL SWITCH (Ref. AMM TASK 29-13-41-000-R 003) and (Ref. AMM TASK 29-13-41-400-003).
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