- do a check of the wiring between: LOW LEVEL SWITCH connector B/C and CB (1832GQ) and repair the wiring as necessary (Ref. ASM 29-31/02).
2 If there is 28VDC:
_
- replace the LOW LEVEL SWITCH (Ref. AMM TASK 29-11-41-000-003) and (Ref. AMM TASK 29-11-41-400-003).
3 If the fault continues:
_
- make sure that the wiring is not connected to GND between: LOW LEVEL SWITCH connector B/B and DIODE (1158VD) connector 11 (Ref. ASM 29-11/01) and (Ref. ASM 29-31/02).
a If the wiring is connected to GND:
_
- repair the wiring as necessary.
(3) 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 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 Green hydraulic system (Ref. AMM TASK 29-00-00-280-001).
1 If the internal leakage rate is too high:
_ - repair the defective component.
2 If the fault continues, or you can not find a 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 ∞∞29-11-00∞∞∞∞∞∞∞∞∞∞Page 215
Aug 01/04R CES
- 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.
C. If the Fault Confirmation gives:
- the message HYD G RSVR LO LVL on the upper ECAM DU,
- the PTU P/BSW FAULT on panel 40VU,
- the GREEN ENG 1 PUMP P/BSW FAULT on panel 40VU,
- do a visual check of the quantity shown on the mechanical indicator of the Green reservoir.
(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 29-11-41-000-002) and (Ref. AMM TASK 29-11-41-400-002).
(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 Green hydraulic system (Ref. AMM TASK 29-00-00-280-001).
1 If the internal leakage rate is too high:
_ - repair the defective component.
2 If the fault continues, or you can not find a 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 ∞∞29-11-00∞∞∞∞∞∞∞∞∞∞Page 216
Aug 01/04R CES
- 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.
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 ∞∞29-11-00∞∞∞∞∞∞∞∞∞∞Page 217
Aug 01/04R
CES
TASK 29-11-00-810-804
Loss of the Pressure of the ENG 1 Pump
1. Possible Causes
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