(d)
Remove the bolt and nut that attach the link rod end to the bracket that is attached to the flange of the TVCA valve.
(e)
Remove the bolts that attach the TVCA valve and the bracket to the HPC case boss.
(f)
Remove the TVCA valve and the bracket from the engine. 1) Discard the gasket.
S 024-032-N00
(2)
If it is necessary to replace the TVCA valve, do the steps that follow:
(a)
Remove the adapter from the port in the TVCA valve. 1) Discard the gasket.
S 024-033-N00
(3) Install protection covers on the right TVCA duct, the air signal tube, the HPC case boss and the openings in the TVCA valve.
TASK 75-24-16-404-027-N00
3. Install the Turbine Vane Cooling Air Valve
__________________________________________
A. Equipment
(1) M303, M305, or M307 Bergen Mechanical Crimper
Bergen Cable Technologies Inc
170 Gregg St
P.O.
Box 1300
Lodi, NJ 07644-9982
B.
Consumable Materials
(1)
D00390 Oil - Engine
(2)
G00964 Compound - Antigalling, Fel-Pro C-200
(3)
G00767 Wax - Paraffin, PMC 9552
EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. ENGINES WITH PHASE 3 CHANGES ú
75-24-16
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BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
(4)
G02334 Lockwire - AS3214-02
(5)
G02332 Ferrule - P05-292 (Optional)
(6)
G02335 Cable - Safety - P05-291 (Optional)
C.
References
(1)
AMM 71-00-00/501, Power Plant
(2)
AMM 71-11-04/201, Fan Cowl Panel
(3)
AMM 71-11-06/201, Core Cowl Panel
(4)
AMM 78-31-00/201, Thrust Reverser System
D.
Access
(1)
Location Zones
412 Engine 1 - HPC Rear Case
422 Engine 2 - HPC Rear Case
432 Engine 3 - HPC Rear Case
442 Engine 4 - HPC Rear Case
(2)
Access Panels
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 Install the TVCA valve
S 424-015-N00
(1) If it is necessary to install a new TVCA valve, do the steps that follow:
(a)
Remove the protection cover from the port for the adapter of the air signal tube connection.
(b)
Install a new gasket to the adapter.
(c)
Lubricate the adapter threads with engine oil.
(d)
Install the adapter in the port of the air signal tube connection in the TVCA valve. 1) Tighten the adapter to 110-120 pound-inches (12.4-13.6
newton-meters).
F. Procedure
S 424-034-N00
(1) Install the TVCA valve.
(a)
Remove the protection covers from the right TVCA duct, the air signal tube, the HPC case boss and the openings in the TVCA valve.
(b)
Install a new gasket to the HPC case boss. 1) Attach the gasket to the HPC case boss with paraffin wax.
(c)
Install a new gasket to the flange of the right TVCA duct.
1) Attach the gasket to the flange of the right TVCA duct with paraffin wax.
(d)
Lubricate the threads of the bolts that attach the TVCA valve with engine oil.
EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. ENGINES WITH PHASE 3 CHANGES ú
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BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
////////////////////////A / PW4000 SERIES /747-400 / ENGINES/MAINTENANCE MANUAL ////////////////////////
(e)
Install the TVCA valve and the bracket to the HPC case boss with the bolts. 1) Tighten the bolts to 85-95 pound-inches (9.6-10.7
