DOC AIRBUS | TSM A320FIDG1 Clogged Filter Condition or Failure of the Clogged-Filter Sense Circuit
TASK 24-00-00-810-824-A
IDG1 Clogged Filter Condition or Failure of the Clogged-Filter Sense Circuit
1. Possible Causes
2. Job Set-up Information
A. Referenced Information
3. Fault Confirmation
Subtask 24-00-00-740-070-A ** ON A/C NOT FOR ALL
Subtask 24-00-00-810-097-A ** ON A/C NOT FOR ALL
[Rev.8 from Aug 2018]
2026.04.04 04:26:09 UTC
IDG1 Clogged Filter Condition or Failure of the Clogged-Filter Sense Circuit
1. Possible Causes
2. Job Set-up Information
A. Referenced Information
| REFERENCE | DESIGNATION |
|---|---|
| TSM TASK 24-21-00-810-815-A | The Differential Pressure Indicator (DPI) of the IDG1 Oil Filter is Extended - Alternate Procedure |
| AMM 24-21-00-210-805 | Check of the Oil Level and Oil-Filter Differential-Pressure Indicator (DPI) |
| AMM 24-21-00-210-807 | Inspection of the IDG Oil Charge and Scavenge Filter Elements |
| AMM 24-21-00-920-802 | Drain, Remove and Discard the Scavenge and Charge Filter Elements and Replenish IDG Oil System |
| ASM 242101 | |
| AMM 24-21-51-000-803 | Removal of the Integrated Drive Generator - IDG 1(2) |
| AMM 24-21-51-000-804 | Removal of the IDG Oil Charge and Scavenge Filter-Elements |
| AMM 24-21-51-400-803 | Installation of the Integrated Drive Generator - IDG 1(2) |
| AMM 24-22-34-000-001 | Removal of the GCU-1(2) |
| AMM 24-22-34-400-001 | Installation of the GCU-1(2) |
| AMM 24-41-00-740-002 | Operational Check of the GAPCU via the CFDS |
Subtask 24-00-00-740-070-A ** ON A/C NOT FOR ALL
A. Test
(1) If the CMS message IDG1 (E1-4000XU) CLOG FLTR/GCU1 (1XU1) comes into view with other CMS messages:
Do the trouble shooting procedure related to the other CMS messages.
(a) If there are no other CMS messages, do the BITE test of the EPGS AMM 24-41-00-740-002.
4. Fault Isolation(1) If the CMS message IDG1 (E1-4000XU) CLOG FLTR/GCU1 (1XU1) comes into view with other CMS messages:
Do the trouble shooting procedure related to the other CMS messages.
(a) If there are no other CMS messages, do the BITE test of the EPGS AMM 24-41-00-740-002.
Subtask 24-00-00-810-097-A ** ON A/C NOT FOR ALL
A. If the BITE test of the EPGS gives the maintenance message GCU 1 (1XU1):
Subtask 24-00-00-810-098-A ** ON A/C NOT FOR ALL - Replace GCU-1 [1XU1] AMM 24-22-34-000-001 and AMM 24-22-34-400-001.
NOTE: If the BITE test gives other CMS fault messages, do the trouble shooting procedures for all CMS fault messages. For this, refer to the CMS index list.
B. If the BITE test gives the maintenance message IDG1 (E1-4000XU) CLOG FLTR/GCU1 (1XU1):
On the electrical receptacle of IDG1,
Subtask 24-00-00-710-065-A ** ON A/C NOT FOR ALL - Do a check of Differential-Pressure Indicator (DPI) of the IDG1 oil-filter AMM 24-21-00-210-805.
- Do the alternate procedure (Ref. TSM TASK 24-21-00-810-815).
- Remove the IDG1 oil scavenge and charge filter-elements AMM 24-21-51-000-804.
- Do a visual inspection of the IDG1 oil scavenge and charge filter-elements AMM 24-21-00-210-807.
- Replace IDG-ENG 1 [4000XU1] AMM 24-21-51-000-803 and AMM 24-21-51-400-803.
- Drain IDG1 oil system, discard filter elements and replenish AMM 24-21-00-920-802.
- Do a check of the clogged-filter-switch sense wiring for an intermittent short to ground between pin A/3A of the GCU1 and pin B/5 of the IDG1 ASM 242101.
- Repair it.
On the electrical receptacle of IDG1,
- Do a check of the resistance of the oil outlet temperature-sensor between pin B/7 and pin B/8 of the IDG1 (100 ohms plus or minus 10 ohms at the ambient temperature of the IDG case) ASM 242101.
- Replace IDG-ENG 1 [4000XU1] AMM 24-21-51-000-803 and AMM 24-21-51-400-803.
- Do a check and repair the oil-outlet temperature-sensor wiring ASM 242101:
* Pin B/7 of the IDG1 and pin A/9C of the GCU1
* Pin B/8 of the IDG1 and pin A/9D of the GCU1.
C. After the subsequent flight, make sure that the fault does not continue
NOTE: If you replaced the filter element only and if the fault continues, this means that there is an intermittent failure of the clogged-filter switch.
In this replace the IDG when another fault makes this replacement necessary (ignore the message until the IDG is replaced) and monitor the the condition of the filter with the differential pressure indicator.
In this replace the IDG when another fault makes this replacement necessary (ignore the message until the IDG is replaced) and monitor the the condition of the filter with the differential pressure indicator.