24-41-02
ALL ú ú 01 Page 203 ú Jun 20/90
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
757
MAINTENANCE MANUAL
TASK 24-41-02-762-023
3. External Power Receptacle Neutral Pin to Nose Gear Grounding Stud Continuity____________________________________________________________________________ Check______
A. Special Tools and Equipment
(1) Low Resistance Ohmmeter
B. References
(1) AMM 24-22-00/201, Manual Control
C. Access
(1)
Location Zone
(a) 119 Main equipment center (RH side)
(2)
Access Panel
(a) P30 External power panel
D. Prepare for continuity check.
S 862-022
(1)
Remove electrical power from the airplane and all externally powered devices (AMM 24-22-00/201).
S 212-024
(2)
Make sure the airplane static ground cable is not connected.
S 012-021
(3)
Open the P30 panel for the external power receptacle.
E. Perform continuity check.
S 762-020
(1) Measure the resistance between the external power receptacle neutral pin and nose gear ground stud.
(a) If the resistance exceeds 0.1 ohms, do this task:
1) External Power Receptacle - Inspection/Check (AMM 24-41-02/201)
S 302-018
(2)
If the problem continues, examine and repair the wiring between the external power receptacle neutral pins and the associated ground stud.
S 862-025
(3)
Return the airplane to serviceable condition. Connect the airplane static ground cable if required.
TASK 24-41-02-002-007
4. Remove the External Power Receptacle____________________________________
A. References
(1)
AMM 24-22-00/201, Electrical Power - Control
(2)
AMM 27-61-00/201, Spoiler/Speedbrake Control System
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24-41-02
ALL ú ú 01 Page 204 ú May 28/99
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
757
MAINTENANCE MANUAL
B. Access
(1)
Location Zones
119 Main Equipment Center
(2)
Access Panels
119BL Main Equipment Center Access
C. Remove the External Power Receptacle (Fig. 202)
S 042-008
WARNING: KEEP PERSONS AND EQUIPMENT AWAY FROM ALL CONTROL SURFACES WHEN
_______ HYDRAULIC POWER IS SUPPLIED. AILERONS, ELEVATORS, RUDDER, FLAPS, SLATS SPOILERS AND STABILIZER ARE FULLY POWERED SURFACES. INJURY TO PERSONS OR DAMAGE TO EQUIPMENT CAN OCCUR WHEN HYDRAULIC POWER IS SUPPLIED.
(1)
Do the deactivation procedure for the spoilers (AMM 27-61-00/201) or move all persons and equipment away from the spoilers.
S 862-009
(2)
Remove electrical power (AMM 24-22-00/201).
S 422-016
WARNING: REMOVE ELECTRICAL POWER FROM THE AIRPLANE BEFORE YOU GET ACCESS
_______ TO THE RECEPTACLE. VOLTAGE LEVELS AT THE RECEPTACLE CAN CAUSE INJURY TO PERSONS.
(3) Do these steps to remove the receptacle:
(a)
Open the floor panels on the forward right side of the E2 equipment rack in the main equipment center.
(b)
Remove the four nuts that hold the terminal cover.
(c)
Remove the terminal cover.
(d)
Identify the wires on the receptacle for the installation.
(e)
Remove the wires from the receptacle.
(f)
Remove the nuts that hold the receptacle to the pan.
(g)
Remove the receptacle and connector shield from the outer side of the airplane.
TASK 24-41-02-402-011
5. Install the External Power Receptacle (Fig. 202)
_____________________________________
A. Consumable Materials
(1)
B00192, Solvent - TT-N-95
(2)
A00247, Compound - Sealing - BMS 5-95, Class B
(3)
A00776, Compound - Potting, Dow Corning No. 738
B. References
(1)
AMM 24-22-00/201, Electrical Power - Control
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本文链接地址：757 AMM 飞机维护手册 电源 ELECTRICAL POWER 2(76)
