(7)
AMM 78-31-00/201, Thrust Reverser System
(8)
AMM 79-21-05/401, Main Oil Filter Element
(9)
AMM 79-21-10/401, Magnetic Chip Detectors
(10)
AMM 79-21-10/601, Magnetic Chip Detectors
(11)
AMM 79-21-16/401, Last Chance Oil Strainers
(12)
AMM 79-21-16/601, Last Chance Oil Strainers
(13)
AMM 79-21-16/701, Last Chance Oil Strainers
D.
Access
(1)
Location Zone
412 Engine 1 - Engine
422 Engine 2 - Engine
432 Engine 3 - Engine
442 Engine 4 - Engine
(2)
Access Panel
415 and 416 Thrust Reverser Halves - Engine 1
425 and 426 Thrust Reverser Halves - Engine 2
435 and 436 Thrust Reverser Halves - Engine 3
445 and 446 Thrust Reverser Halves - Engine 4
E.
Prepare for the Oil System Contamination Inspection
(1)
Open the fan cowl panels (AMM 71-11-04/201).
S 016-097-N00
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No. 8 - Oil System Contamination Inspection
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WARNING: DO THE THRUST REVERSER DEACTIVATION PROCEDURE TO PREVENT THE
_______
OPERATION OF THE THRUST REVERSER. THE ACCIDENTAL OPERATION OF
THE THRUST REVERSER CAN CAUSE INJURIES TO PERSONS OR DAMAGE TO
EQUIPMENT.
(2)
Do this procedure: Thrust Reverser Deactivation for Ground
Maintenance (AMM 78-31-00/201).
S 016-099-N00
(3)
Open the core cowl panels (AMM 71-11-06/201).
S 016-100-N00
WARNING: OBEY THE INSTRUCTIONS IN AMM 78-31-00/201 WHEN YOU OPEN THE
_______
THRUST REVERSERS. IF YOU DO NOT OBEY THE INSTRUCTIONS,
INJURIES TO PERSONS OR DAMAGE TO EQUIPMENT CAN OCCUR.
(4)
Open the thrust reversers (AMM 78-31-00/201).
F.
Examine the Oil for Contamination from Solids (Build Debris, Pieces from a Repair, Bearing, or Gear).
S 286-216-N00
(1) Examine for contamination:
NOTE: You must adjust the frequency of filter checks and
____ replacements. This will keep to a minimum the number of incidents where the delta-P warning light for the main oil filter comes on.
(a) Remove the main oil filter (AMM 79-21-05/401) and the magnetic chip detectors (AMM 79-21-10/401).
CAUTION: IF YOU FIND METAL PARTICLES, YOU MUST FIND THE SOURCE OF
_______ THE PARTICLES AND CORRECT THE CONDITION BEFORE SUBSEQUENT FLIGHTS. MORE DAMAGE CAN POSSIBLY OCCUR IF THE ENGINE IS OPERATED WITH A PROBLEM THAT IS NOT CORRECTED.
(b)
Flush the main oil filter with solvent.
(c)
Put the solvent through filter paper or a clean cloth to examine the particles from the oil filter. 1) Keep the contamination.
(d)
Install a new main oil filter (AMM 79-21-05/401).
(e)
Remove all the last chance oil strainers (AMM 79-21-16/401).
(f)
Examine the last chance oil strainers for contamination (AMM 79-21-16/601). 1) Keep the contamination that you find.
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No. 8 - Oil System Contamination Inspection
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(g)
Clean the last chance oil strainers if you find contamination (AMM 79-21-16/701).
(h)
Install the last chance oil strainers.
(i)
Put the solvent through filter paper or a clean cloth to collect the contamination.
(j)
Examine the magnetic chip detectors (AMM 79-21-10/601).
