E.
Access
(1)
Location Zone 412 Engine 1 - HPC Fwd Case to LPT Case at 2 o'clock 422 Engine 2 - HPC Fwd Case to LPT Case at 2 o'clock 432 Engine 3 - HPC Fwd Case to LPT Case at 2 o'clock 442 Engine 4 - HPC Fwd Case to LPT Case at 2 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 Rignt Thrust Reverser Half - Engine 4
F.
Prepare for the Adjustment of the TCC System
S 015-039-N00
(1) Open the right fan cowl panel (AMM 71-11-04/201).
S 045-040-N00
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 015-041-N00
(3)
Open the right core cowl panel (AMM 71-11-06/201).
S 015-042-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 right thrust reverser (AMM 78-31-00/201).
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BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
G. Procedure
S 825-043-N00
(1) Adjust the TCC system (partial rig):
(a) Install the PWA 85465 rig pin in the housing of the TCC air-valve actuator with the steps that follow:
CAUTION: IF YOU USE A LONGER POSITIONING BOLT OTHER THAN THE
_______ SPECIFIED BOLT LENGTH, DO NOT TURN THE POSITIONING BOLT UNTIL IT TOUCHES THE BOTTOM. IF THE LONGER POSITIONING BOLT TOUCHES THE BOTTOM, IT CAN CAUSE DAMAGE TO THE TCC AIR-VALVE ACTUATOR.
1) Install the positioning bolt in the bolt hole in the aft end of the TCC air-valve actuator.
NOTE: The positioning bolt is a quality standard hexhead
____ bolt with 8-32 by 1.5 inch (38.1 mm) thread length. With a 1.5 inch (38.1 mm) length bolt and when the rig pin touches the bottom, approximately 0.125 inch
(3.175 mm) of the length will show.
2) Slowly turn the positioning bolt clockwise. a) Align the hole in the piston shaft with the rig pin hole in the TCC air-valve actuator housing. 3) Turn the positioning bolt and put the PWA 85465 rig pin into the aligned holes.
NOTE: Make sure that the rig pin is fully engaged in the
____
piston shaft.
(b) Install the PWA 86069 rig pin through the lever arm and into the rig pin hole in the HPT valve as follows: 1) Hold the lever arm of the HPT valve against the idler arm.
NOTE: Permit no distance between the lever arm and idler
____ arm while you adjust the system.
2) Align the hole in the lever arm with the rig pin hole in the HPT valve. 3) Put the rig pin through the lever arm and into the rig pin hole in the HPT valve.
4) If you cannot put the rig pin through the lever arm and into the rig pin hole in the HPT valve, adjust the TCC control system with the complete rig procedure.
NOTE: You must use rig pins of a different length when you
____ do the complete rig procedure.
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////////////////////////A / PW4000 SERIES /747-400 / ENGINES/MAINTENANCE MANUAL ////////////////////////
(c)
Install a PWA 86069 rig pin through the lever arm and into the rig pin hole in the LPT valve.
(d)
If you can install the rig pin into the LPT valve rigging hole, the rigging of the system is satisfactory. 1) If the system is satisfactory, remove the rigging pins with
the steps at the end of this procedure.
(e)
If you cannot install the rigging pin into the rigging pin hole, do the steps that follow: 1) Remove the bolt and nut that attach the rod end of the
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