P.O. Box 1300
Lodi, NJ 07644-9982
(2)
PWA 87649 Angle Gage - Pratt & Whitney, Commercial Products Division, 400 Main Street, East Hartford, CT 06108
B.
Consumable Materials
(1)
D00390 Oil - Engine
(2)
G02334 Lockwire - AS3214-02
(3)
G02332 Ferrule - P05-292 (Optional)
(4)
G02335 Cable - Safety - P05-291 (Optional)
C.
References
(1)
AMM 71-00-00/501, Power Plant
(2)
AMM 71-11-04/201, Fan Cowl Panels
(3)
AMM 71-11-06/201, Core Cowl Panels
(4)
AMM 78-31-00/201, Thrust Reverser System
(5)
IPC 73-21-03 Fig. 10
D.
Access
(1)
Location Zone 412 Engine 1 - Diffuser/Combustor Case 2:30 o'clock 422 Engine 2 - Diffuser/Combustor Case 2:30 o'clock 432 Engine 3 - Diffuser/Combustor Case 2:30 o'clock 442 Engine 4 - Diffuser/Combustor Case 2:30 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.
Procedure
S 424-035-N00
(1)
Install the TT3 probe:
(a)
Remove the protection cap from the boss on the diffuser/combustor case.
(b)
Install a new gasket to the TT3 probe.
(c)
Lubricate the threads of the TT3 probe with engine oil.
(d)
Install the TT3 probe in the diffuser/combustor case boss.
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BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
(e)
If installed, remove the lockwire or safety cable between the body nut and the coupling nut.
(f)
Tighten the body nut to 95-100 pound-inches (10.7-11.3 newton-meters).
(g)
Safety the body nut to the diffuser/combustor case with lockwire or safety cable and safety cable ferrule.
(h)
Attach the PWA 87649 Angle Gage to the two bolt hole boss on the diffuser/combuster case. 1) Move the gage guide into position.
(i)
Turn the TT3 probe until the two larger terminal studs align with the top of the engine.
(j)
Touch the side of the TT3 probe with the guide to align the TT3 probe for installation of the wire harness. 1) Tighten the hand knob to hold the guide assembly into
position.
(k)
Tighten the coupling nut to 95-100 pound-inches (10.7-11.3 newton-meters).
(l)
Safety the coupling nut to the body nut with lockwire or safety cable and safety cable ferrule.
(m)
Remove the PWA 87649 Angle Gage from the diffuser/combuster case.
CAUTION: DO NOT APPLY TOO MUCH TORQUE (MORE THAN MAXIMUM TORQUE) TO
_______ THE NUTS ON THE TT3 PROBE STUDS. TOO MUCH TORQUE CAN LOOSEN OR DAMAGE THE TT3 PROBE STUDS.
(n) Connect the terminals of the wire harness to the studs on the TT3 probe with the washers and the nuts. 1) Tighten the nuts on the alumel terminals (larger studs) to
18-22 pound-inches (2.0-2.5 newton-meters). 2) Tighten the nuts on the chromel terminals (smaller studs) to 15-18 pound-inches (1.7-2.0 newton-meters).
F. Return the Aircraft to Its Usual Condition.
S 864-017-N00
(1)
For the applicable engine, remove the DO-NOT-CLOSE tags and close these circuit breakers as follows:
(a)
P6 Main Power Distribution Panel
1) 6G15 SCU ALT PWR ENG 1
2) 6G23 ENG SCU 1
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BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
////////////////////////A / PW4000 SERIES /747-400 / ENGINES/MAINTENANCE MANUAL ////////////////////////
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