- replace the IDG2 OIL COOLER (Ref. AMM TASK 73-11-60-000-002) (Ref. AMM TASK 73-11-60-400-002)
- do the servicing of the IDG2 after oil chemical contamination (Ref. AMM TASK 24-21-00-612-043).
(2) If the inspection shows nothing incorrect:
- do the oil servicing of the IDG2 (Ref. AMM TASK 12-13-24-612-041).
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TASK 24-21-00-810-815
The Differential Pressure Indicator (DPI) of the IDG1 Oil Filter is Extended -
Alternate Procedure
1. Possible Causes
_______________
- IDG (4000XU)
- oil filter(s)
2. Job Set-up Information
______________________
A. Referenced Information
-------------------------------------------------------------------------------
REFERENCE DESIGNATION
-------------------------------------------------------------------------------
AMM 24-21-00-210-044 Inspection of the Filter Element(s) AMM 24-21-00-920-040 Drain IDG Oil System, Discard Filter Element(s) and Replenish AMM 24-21-51-000-040 Removal of the Integrated Drive Generator -IDG 1(2),(4000XU) AMM 24-21-51-400-040 Installation of the Integrated Drive Generator -IDG 1(2),(4000XU) TSM 24-21-00 P.Block 301 INTEGRATED DRIVE GENERATOR SYSTEM (IDG, GCU)
3. Fault Confirmation
__________________
A. Test
Not applicable.
4. Fault Isolation
_______________
A. Do this trouble shooting procedure
NOTE : You can find the DPI extended with CFDS fault messages.
____ First, do the trouble shooting for each CFDS fault messages. For this, refer to the CFDS index list.
(1) If no message is found:
- replace the IDG (4000XU) (Ref. AMM TASK 24-21-51-000-040) and (Ref.
AMM TASK 24-21-51-400-040), - or do the alternate procedure (IDG DPI reset).
B. Alternate Procedure (IDG DPI Reset)
NOTE : The alternate procedure lets you do a reset of the DPI as an
____
alternative to the replacement of the IDG.
There are conditions related to this procedure:
- A maximum of three resets is permitted.
- After a DPI reset, the DPI check interval becomes:
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. For normal operations: weekly or 100 FH (the one that comes
first).
. For Extended Range Twin-Engined Aircraft Operations (ETOPS):
before each flight.
If, after a DPI reset, the DPI does not extend again between two
scheduled oil/filter changes, you can cancel the conditions
related to this procedure:
- The DPI reset status goes back to zero (a maximum of three more resets is permitted).
- The DPI check interval goes back to the interval specified in the MPD. (Ref. TSM 24-21-00 P.Block 301)
(1) If this is the first reset:
(a) Do a check of the IDG1 oil filter(s) and the cover(s) for metal particles (Ref. AMM TASK 24-21-00-210-044):
1 If you find metal particles:
_
- replace the IDG (4000XU) (Ref. AMM TASK 24-21-51-000-040) and (Ref. AMM TASK 24-21-51-400-040).
2 If you do not find metal particles:
_ a Drain the oil, replace the oil filter(s) and fill the IDG1
_ with oil (Ref. AMM TASK 24-21-00-920-040).
b Do a reset of the DPI.
_
c Use a sticker, tag or other method to write on the IDG that
_ you did the first reset of the DPI.
(2) If this is not the first reset:
(a) Do a check of the number of reset:
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