S 644-039-N00
(24)
Use engine oil to lubricate the threads of the screws (23) that hold the cover (24) on the terminal box.
S 214-040-N00
(25)
Examine the ground terminal on the inner surface of the cover (24) to make sure the ground lead from the EEC thermocouple cable (20) is correctly attached.
NOTE: If the ground lead on the W6 cable at the EGT Thermocouple
____ Terminal Box is damaged or missing, you must repair the cable per Unison SB 420081-73-46 or replace it.
S 414-041-N00
(26)
Install the cover (24) on the terminal box with the screws (23).
S 434-042-N00
(27)
Tighten the screws (23) to 16-22 pound-inches (1.8-2.5 newton-meters).
(28)
Install the lockwire on the screws (23).
S 434-043-N00
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S 644-044-N00
(29)
Use engine oil to lubricate the threads of the bolts (9) that attach the plate (12) and the thermocouple cable clamp to the bracket (13) at the 6 o'clock position.
S 424-045-N00
(30)
At the 6 o'clock position, attach the thermocouple cable clamp to the bracket (15) with the bolt (9).
S 424-035-N00
(31)
Put the left thermocouple cable (2) in the correct position between the bracket (13) and the plate (12).
S 434-036-N00
(32)
With the left thermocouple cable (2) in the correct position, attach the plate (12) to the bracket (13) with the bolts (9).
S 434-005-N00
(33)
Tighten all of the the bolts (9) to 36-40 pound-inches
(4.1-4.5 newton-meters).
S 644-037-N00
(34)
Use engine oil to lubricate the threads of the bolts (6) that attach the clamps to the flange T brackets on the turbine exhaust case.
S 424-038-N00
(35)
Attach the thermocouple cable clamps to the flange T brackets on the turbine exhaust case with the bolts (6) and the nuts (7).
S 434-039-N00
(36)
Tighten the nuts (7) to 36-40 pound-inches (4.1-4.5 newton-meters).
E.
Install the Right Thermocouple Cable (Fig. 401).
S 034-040-N00
(1) Remove the four nuts (3 and 4) and washers (5 and 8) from the thermocouple probe studs at the 1 and 4 o'clock positions on the turbine exhaust case.
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S 424-041-N00
(2) Attach the harness leads of the right thermocouple cable to each set of thermocouple studs with the washers (5 and 8) and nuts (3 and 4).
NOTE: Align the harness leads to make them parallel to each other
____
before you tighten the nuts (3 and 4).
S 434-007-N00
CAUTION: DO NOT TIGHTEN THE NUTS MORE THAN THE MAXIMUM TORQUE THAT IS
_______ SPECIFIED. TOO MUCH TORQUE ON THE NUTS CAN LOOSEN OR CAUSE DAMAGE TO THE THERMOCOUPLE STUDS.
(3) Tighten the nuts (3 and 4) to the correct torque as follows:
(a)
Tighten the nuts on the alumel (larger diameter) thermocouple probe studs to 18-22 pound-inches (2.0-2.5 newton-meters).
(b)
Tighten the nuts on the chromel (smaller diameter) thermocouple probe studs to 15-18 pound-inches (1.7-2.0 newton-meters).
S 644-043-N00
(4)
Use engine oil to lubricate the threads of the bolts (6 and 9), which attach the thermocouple cable clamps to the bracket at the 4 o'clock position.
S 424-044-N00
(5)
At the 4 o'clock position, attach the thermocouple cable clamps to the bracket with the bolts (6 and 9) and nuts (7).
S 434-045-N00
(6)
Tighten the nuts (7) to 36-40 pound-inches (4.1-4.5 newton-meters).
