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73-11-04
ALL ú ú N01 Page 602 ú Jun 18/99
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
FUEL DISTRIBUTION VALVE STRAINER - CLEANING/PAINTING
____________________________________________________
1. General_______
A. This procedure has two tasks:
(1)
A cleaning procedure for strainers that have small quantities of contamination.
(2)
A cleaning procedure for strainers that have large quantities of contamination.
TASK 73-11-04-107-001-N00
2. Clean the Fuel Distribution Valve Strainer that has a Small Quantity of_______________________________________________________________________ Contamination_____________
A. Standard Tools and Equipment
(1)
Container - 1 gallon (4 liter) volume (for petroleum solvent)
(2)
Air Source - Compressed Dry Filtered
B.
Consumable Materials
(1)
B00074 Solvent, Petroleum - PMC 9001
C.
References
(1)
AMM 73-11-04/401, Fuel Distribution Valve Strainer
(2)
AMM 73-11-04/601, Fuel Distribution Valve Strainer
(3)
IPC 73-11-04 Fig. 1
D.
Access
(1)
Location Zone 412 Engine 1 - Main Gearbox Fwd Face 4 o'clock 422 Engine 2 - Main Gearbox Fwd Face 4 o'clock 432 Engine 3 - Main Gearbox Fwd Face 4 o'clock 442 Engine 4 - Main Gearbox Fwd Face 4 o'clock
(2)
Access Panel 416 Right Thrust Reverser Half - Engine 1 426 Right Thrust Reverser Half - Engine 2 436 Right Thrust Reverser Half - Engine 3 446 Right Thrust Reverser Half - Engine 4
E.
Prepare to Clean the Fuel Distribution-Valve Strainer
S 027-024-N00
(1)
Do this task: "Fuel Distribution Valve Strainer Removal" (AMM 73-11-04/401).
S 217-003-N00
(2)
Do this task: "Fuel Distribution Valve Strainer Inspection" (AMM 73-11-04/601).
EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. ú
73-11-04
ALL ú ú N01 Page 701 ú Jun 15/98
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
////////////////////////A / PW4000 SERIES /747-400 / ENGINES/MAINTENANCE MANUAL ////////////////////////
F. Procedure
S 167-022-N00
CAUTION:_______DO NOT USE PAPER TO CLEAN OR DRY THE PARTS. LINT OR PIECES FROM THE PAPER CAN CAUSE CONTAMINATION OF THE FUEL SYSTEM.
CAUTION: DO NOT USE A WIRE BRUSH, PROBE OR OTHER DEVICE TO CLEAN THE
_______ STRAINER. THESE DEVICES CAN CAUSE DAMAGE TO THE WIRE MESH SCREEN OF THE STRAINER.
(1)
Clean the fuel distribution valve strainer (small quantity of contamination):
(a)
Put the strainer in a container filled with Petroleum Solvent and move the strainer around quickly.
WARNING: MAKE SURE YOU WEAR PROTECTIVE GOGGLES OR A FACE SHIELD
_______ WHEN YOU USE COMPRESSED AIR. THE AIR PRESSURE MUST BE LESS THAN 30 PSI (200 KPA). COMPRESSED AIR CAN CAUSE INJURY TO PERSONS.
(b)
Clean all remaining particles from the strainer with dry compressed air with a maximum pressure of 30 psi (200 kPa).
(c)
Examine the strainer for contamination with the steps that follow: 1) Put a light in or behind the strainer to make sure the
strainer is clean.
2) If the strainer is not clean, do the cleaning procedure of the strainer again.
3) Replace the strainer if the inspection shows that the contamination stays on more than approximately 10 percent of the strainer.
G. Return the Aircraft to Its Usual Condition
S 427-006-N00
(1) Do this task: "Fuel Distribution Valve Strainer Installation" (AMM 73-11-04/401).
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