11.
WASHER
9. BOLT
1. HEATSHIELD SUPPORT
10.
NUT 12. BOLT
11.
WASHER
BRACKET
13.
BOLT
14.
NUT
10. NUT7. OIL QUANTITY 11. WASHERTRANSMITTER 12. BOLT 4. HEATSHIELD
8. BRACKET
8. ELECTRICAL HARNESS SUPPORT BRACKET
FWD FWD
A-A B-B
1 ENGINES WITH PW SB 79-74
Oil Quantity Transmitter Installation
Figure 401 (Sheet 2)
EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. ú
79-31-01
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BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
////////////////////////A / PW4000 SERIES /747-400 / ENGINES/MAINTENANCE MANUAL ////////////////////////
S 014-026-N00
(2) Open the left fan cowl panel (AMM 71-11-04/201).
S 044-037-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.
(3)
Do this procedure: Thrust Reverser Deactivation for Ground
Maintenance (AMM 78-31-00/201).
S 414-027-N00
(4)
Open the left core cowl panel (AMM 71-11-06/201).
S 014-038-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.
(5)
Open the left thrust reverser (AMM 78-31-00/201).
E.
Remove the Oil Quantity Transmitter
S 034-004-N00
(1)
Disconnect the electrical connector DT675 (5) from the oil quantity
transmitter (7).
(a)
Install the protection caps.
S 034-005-N00
(2)
Disconnect the cooling air tube (2) from the union (3) on the heat
shield (4).
S 034-006-N00
(3)
Remove the bolts (12 and 13), nuts (10 and 14), and washers (11)
which attach the heat shield (4).
(4)
Remove the heat shield (4).
S 034-007-N00
(5)
Remove the bolts (12), nuts (10), and washers (11) which attach the
support bracket (1) for the heat shield and support bracket (8) for
the electrical connector.
(6)
Remove the support brackets (1 and 8).
S 034-028-N00
S 034-029-N00
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BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
S 034-008-N00
(7)
ENGINES PRE-PW-SB 79-74; Remove the bolts (9), nuts (10), and washers (11) which attach the oil quantity transmitter (7) to the oil tank.
S 034-043-N00
(8)
ENGINES POST-PW-SB 79-74; Remove the bolts (16) and nuts (17) which attach the oil quantity transmitter (7) and bracket (15) to the oil tank.
S 024-009-N00
WARNING: BEFORE YOU OPEN THE OIL TANK CAP, PERMIT A MINIMUM OF FIVE
_______ MINUTES AFTER THE ENGINE SHUTDOWN TO LET THE PRESSURE IN THE OIL TANK BLEED OFF. A FAST FLOW OF HOT OIL CAN OCCUR AND CAUSE INJURY TO YOU.
DO NOT KEEP THE OIL ON YOUR SKIN FOR A LONG TIME. IF YOU DO NOT CLEAN THE OIL OFF, THE OIL CAN CAUSE INJURY.
(9) Lift up and pull out the oil quantity transmitter (7) from the oil tank.
NOTE: Let the remaining oil drain from the oil quantity transmitter
____
into a container.
S 034-010-N00
(10) Remove the packing (6) from the probe of the oil quantity transmitter (7).
(a) Discard the packing (6).
S 034-011-N00
(11) Install the protection caps on the cooling air tube (2), oil tank boss, and electrical connection on the oil quantity transmitter (7).
TASK 79-31-01-404-012-N00
3. Install the Oil Quantity Transmitter (Fig. 401)
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