TUBE
FITTING
12.
9. EEC INLET TOTAL TEMPERATURE/PRESSURE (PT2/TT2) PROBE T867
11. REDUCER
10. PACKING
STUD (6 PLACES)
FWD INLET COWL
B
EEC Inlet Total Temperature/Pressure (PT2/TT2) Probe Installation Figure 401
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4) 6G16 SCU ALT PWR ENG 2 5) 6G24 ENG SCU 2 6) 6H21 PROBE HEAT ENG 2 7) 6G17 SCU ALT PWR ENG 3 8) 6G25 ENG SCU 3 9) 6H23 PROBE HEAT ENG 3 10) 6G18 SCU ALT PWR ENG 4 11) 6G26 ENG SCU 4 12) 6H25 PROBE HEAT ENG 4
(2) S 864-003-N00Install the DO-NOT-OPERATE tag on the applicable FUEL CONTROL switch.
(3) S 014-004-N00Remove the access panel (2) for the PT2/TT2 probe. (a) Remove the screws (1) which attach the access panel (2) to the inlet cowl. (b) Remove the access panel (2) from the inlet cowl.
(4) S 034-005-N00Disconnect the electrical connectors DT867B (5) and DT867A (6) from the PT2/TT2 probe (9). (a) Install the caps on the open ends of the electrical connectors.
(5) S 034-006-N00Remove the bolt (4), nut (13), and washers (3) which attach the bonding jumper (14) to the PT2/TT2 probe (9).
(6) S 034-007-N00Disconnect the PT2 sense tube (12) from the PT2/TT2 probe (9). (a) Install the cap on the open end of the PT2 sense tube (12).
(7) S 034-008-N00Remove the nuts (7) and washers (8) which attach the PT2/TT2 probe (9) to the inlet cowl.
(8) S 024-009-N00Remove the PT2/TT2 probe (9) from the inlet cowl.
(9) S 034-010-N00If you will replace the PT2/TT2 probe (9), do the steps that follow: (a) Remove the reducer (11) from the PT2 sense fitting on the PT2/TT2 probe (9).
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////////////////////////A / PW4000 SERIES /747-400 / ENGINES/MAINTENANCE MANUAL ////////////////////////
(b) Discard the packing (10).
S 034-011-N00
(10) Install the cap on the PT2 sense fitting on the PT2/TT2 probe (9).
TASK 73-21-03-404-012-N00
3. Install the EEC Inlet Total Pressure/Temperature (PT2/TT2) Probe (Fig. 401)
________________________________________________________________
A. Standard Tools and Equipment
(1)
Bonding Meter (AMM 20-22-01/601)
(2)
Mats - Protection, Rubber Manufacturers Association Grade SC43, Neoprene Sponge, 1 inch (25 mm) thick, approximately 3 X 4 feet (90 X 120 cm) with warning streamers attached (three are ncessary)
B.
Consumable Materials
(1)
A00247 Sealant - BMS 5-95 Class B-1/2
(2)
A00247 Sealant - Chromate, BMS 5-95, Class B-1/2 (optional to the BMS 5-79)
(3)
B00148 Solvent - Methyl Ethyl Ketone (MEK), TT-M-261
(4)
B00448 Solvent - 1,1,1-Trichloroethane Inhibited, MIL-T-81533 (optional to the MEK)
C.
Parts
~.............................................................................. | AMM | | AIPC | ................. ............................ | FIG | ITEM | NOMENCLATURE | SUBJECT | FIG | ITEM | ................................................................................ | 401 | 9 | PT2/TT2 Probe | 71-11-01 | 01 | 25 | | | 10 | Packing | | | 245 | 2.....….........…...................................…..........…......…........1
D. References
(1)
20-11-15/401, Bonding Jumpers and Ground Leads
(2)
20-22-01/601, Electrical Bonding
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