34. VALVE SERVO FUEL
RETURN TUBE
6. IDG AIR/OIL HEAT 33. VALVE SERVO FUEL EXCHANGER VALVE V350SUPPLY TUBE SEE F
32. VALVE DRAIN TUBE 28. CABLE SHIELD
32. VALVE DRAIN TUBE
54. WASHER 3
29. BOLT 55. PLATE
C1
3
31. NUT 38. TUBE COUPLING NUT
COUPLING NUT
37. TUBE 36. ADAPTER
36. ADAPTER 35. PACKING
35. PACKING 53. PLUG
52. PACKING
23. IDG AIR/OIL HEAT EXCHANGER
34. VALVE SERVO FUEL RETURN TUBE
27. PACKING
33. VALVE SERVO FUEL SUPPLY TUBE 26. ADAPTER
SEE F 25. TUBE COUPLING NUT
32. VALVE DRAIN TUBE
28. CABLE SHIELD
32. VALVE
DRAIN TUBE
54. WASHER
3
55. PLATE 31. NUT 29. BOLT
3
1 ENGINES PRIOR TO INCORPORATION OF C 2
SB PW4ENG 24-4
2 ENGINES INCORPORATING SB PW4ENG 24-4 3 ENGINES INCORPORATING SB PW4ENG 79-49
IDG Air/Oil Heat Exchanger Installation
Figure 401 (Sheet 2)
EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. ú
24-11-14
ALL ú ú 01P Page 403 ú Feb 10/92
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
747-400
MAINTENANCE MANUAL
6. IDG AIR/OIL HEAT EXCHANGER VALVE V350
23. IDG AIR/OIL HEAT EXCHANGER
28.CABLE SHIELD
OIL-OUT PORT ELECTRICAL CONNECTOR
39.
BOLT (18 PLACES)
40.
WASHER (18 PLACES)
OIL-IN
PORT
40. WASHER (18 PLACES)
41. NUT (18 PLACES)
D
42. NUT 42. NUT WIRE HARNESS
14. SERVO FUEL RETURN TUBE
14. SERVO FUEL RETURN TUBE
43. RETAINING
CLAMP
WIRE HARNESS
43.
RETAINING CLAMP
44.
BOLT
44. BOLT
E
L-A3484
IDG Air/Oil Heat Exchanger Installation
Figure 401 (Sheet 3)
EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. ú
24-11-14
ALL ú ú 01P Page 404 ú Oct 10/89
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
747-400
MAINTENANCE MANUAL
33. VALVE SERVO FUEL 48. NUT SUPPLY TUBE 45. BOLT
47. RETAINING
CLAMP
48. NUT 46. BRACKET
47. RETAINING 47. RETAINING
CLAMP CLAMP
48. NUT
51. RETAINING 47. RETAINING CLAMP CLAMP
49. SCREW
34. VALVE SERVO FUEL 50. BOLT
F1
RETURN TUBE 33. VALVE SERVO FUEL
48. NUT SUPPLY TUBE
32. VALVE DRAIN TUBE
45. BOLT
47. RETAINING
CLAMP
46. BRACKET
47. RETAINING CLAMP
34. VALVE SERVO FUEL
RETURN TUBE
48. NUT
47. RETAINING
49. SCREW CLAMP
F2
IDG Air/Oil Heat Exchanger Installation
Figure 401 (Sheet 4)
EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. ú
24-11-14
ALL ú ú 02P Page 405 ú Feb 10/92
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
747-400 MAINTENANCE MANUAL
E. Procedure
S 864-002
(1)
Make sure that the electrical power is off (AMM 24-22-00/201).
S 864-003
(2)
Do this task: "Release the Pressure from the IDG Oil System" (AMM 24-11-00/201).
S 014-004
(3)
Open the right thrust reverser half (AMM 78-31-00/201).
S 014-005
(4)
Remove the fan exit lining, segment No. 2 (AMM 72-34-03/401).
S 034-006
(5)
Disconnect the electrical connector DV350 (15) from the IDG air/oil heat exchanger valve (valve) (6).
S 034-007
(6)
Remove the bolts (17) and the harness bracket (16) that hold the valve's electrical receptacle to the bracket on the actuator support for the stator vane.
S 034-071
(7)
Remove the receptacle from the bracket and install a dust cover (cover).
