FWD
ENGINES WITH SB 79-2036 A
Low Oil Pressure Warning Switch Location Figure 501 (Sheet 2)
E18783
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79-33-00
ALL ú ú N02 Page 503 ú Jun 10/94
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
////////////////////////A / PW4000 SERIES /747-400 / ENGINES/MAINTENANCE MANUAL ////////////////////////
S 825-033-N00
(3)
Set the engine with the steps that follow:
(a)
Set the applicable code that follows. 1) For engine No. 1, "C/26/005/11". 2) For engine No. 2, "C/26/006/00". 3) For engine No. 3, "C/26/010/10". 4) For engine No. 4, "C/26/007/00".
(b)
Make sure the applicable number is "1" for the applicable engine with the steps that follow: 1) For engine No. 1, the first number from the right on the
first line (bit 17). 2) For engine No. 2, the ninth number from the right on the first line (bit 25). 3) For engine No. 3, the fifth number from the right on the first line (bit 21). 4) For engine No. 4, the fourth number from the left on the second line (bit 13).
S 865-032-N00
(4)
Make sure the warning switch operates correctly.
(a)
Start the applicable engine (AMM 71-00-00/201).
(b)
When the oil pressure is 80 psi, make sure the applicable digit is "0" for the applicable engine as follows: 1) For engine No. 1, bit 17. 2) For engine No. 2, bit 25. 3) For engine No. 3, bit 21. 4) For engine No. 4, bit 13.
(c)
Stop the engine (AMM 71-00-00/201).
(d)
During engine shutdown monitor the oil pressure.
(e)
When the oil pressure is 65 psi, make sure the applicable digit is "1" for the applicable engine: 1) For engine No. 1, bit 17 2) For engine No. 2, bit 25 3) For engine No. 3, bit 21 4) For engine No. 4, bit 13.
TASK 79-33-00-735-003-N00
3. System Test - Low Oil Pressure Warning System
_____________________________________________
A. Standard Tools and Equipment
(1)
Air Source - Compressed Dry Filtered, 0-100 psi
(0-700 kPa)
(2)
Valve - Shutoff
(3)
Valve - Vent
(4)
Gauge - Pressure, 0-100 psi (0-690 kPa) range,
1% accuracy
B.
References
(1)
AMM 24-22-00/201, Manual Control
(2)
AMM 45-10-00/201, Central Maintenance Computer System
(3)
AMM 71-00-00/201, Power Plant
(4)
AMM 71-11-04/201, Fan Cowl Panels
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79-33-00
ALL ú ú N01 Page 504 ú Jun 18/99
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
(5)
AMM 71-11-06/201, Core Cowl Panels
(6)
AMM 78-31-00/201, Thrust Reverser System
(7)
WDM 79-33-11
(8)
SSM 79-33-01
C.
Access
(1)
Location Zone 221 Control Cabin, LH 222 Control Cabin, RH 412 Engine 1 - Forward HPC Case 10 o'clock 422 Engine 2 - Forward HPC Case 10 o'clock 432 Engine 3 - Forward HPC Case 10 o'clock 442 Engine 4 - Forward HPC Case 10 o'clock
(2)
Access Panel 415 Left Thrust Reverser Half - Engine 1 425 Left Thrust Reverser Half - Engine 2 435 Left Thrust Reverser Half - Engine 3 445 Left Thrust Reverser Half - Engine 4
Low Oil Pressure Indicating System Test Schematic
Figure 502
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