S 222-069
(3)
Measure the resistance between the discharger tip and the base for all the dischargers. Make a sponge, cotton cloth, or paper towel wet with tap water, and push against the tip of the discharger. Put the megohmmeter leads on the base and on the wet cloth. Examine resistance readings as follows:
NOTE: It is important to have good contact between the wet cloth
____ and the flat area of the discharger tip end. It is not sufficient to clip the megohmmeter lead directly to the tip.
S 222-070
(4) Make sure that the measured resistance is between 6-100 megohms.
TASK 23-61-01-002-019
6. Static Discharger Base Removal (Fig. 202)______________________________
A. General
(1)
Three types of discharger bases are installed on the wings and stabilizers. Installation on the left and right wings and the horizontal stabilizers are almost the same. Bases installed on the rudder are on the left and right sides for aerodynamic balance.
(2)
Tip-type static-discharger bases are aluminum with a rounded surface riveted to the sheet metal. Curvature of the surface gives the part number.
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FUEL TANK
VENT
SEE A
SEE B
SEE E
SEE A
SEE B SEE F SEEG SEEA
SEE B
SEE F
SEE G
FWD FWD
TIP TYPE STATIC DISCHARGER BASE TRAILING EDGE TYPE STATIC DISCHARGER BASE (ALUMINUM) (ALUMINUM)
A B
FWD
TRAILING EDGE TYPE STATIC DISCHARGER BASE STATIC DISCHARGER BASE ADAPTER ASSEMBLY (TITANIUM) (ALUMINUM OR TITANIUM)
C D
Static Discharger Base Installations
Figure 202 (Sheet 1)
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MAINTENANCE MANUAL
AILERON STATIC DISCHARGER BASE INSTALLATION
(TITANIUM)
SEE
SEE
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MAINTENANCE MANUAL
(3)
Trailing-edge type static-discharger bases are aluminum or titanium. Aluminum bases are riveted to sheet metal, or are installed on Thorstrand aluminized fiberglass with an aluminum adapter.
(4)
Titanium bases are used on graphite composite surfaces.
B. References
(1) SRM 51-20-01
C. Equipment
(1)
Sealing compound cutting tool - hardwood or plexiglass -commercially available
(2)
Spatula - commercially available
D. Access
(1) Location Zones
500/600 Left Wing/Right Wing
300 Empennage and Body Section 48
E. Prepare to Remove the Discharger Base
S 862-020
(1) Find the discharger base to be removed.
S 012-057
CAUTION:_______BE CAREFUL WHEN YOU REMOVE AND INSTALL THE DISCHARGER. THE THREADS AND RECESSED HEAD OF THE SETSCREW CAN BE DAMAGED.
(2) Loosen the discharger setscrew and remove the discharger from the base.
F. Remove the Static Discharger Base from Aluminum Skin or Kevlar Surface (Horiz. Stab. Tip):
S 012-037
CAUTION: BE CAREFUL NOT TO DAMAGE THE AIRPLANE SURFACE.
_______
(1)
Use the sealing compound cutting tool to remove the weather/aerodynamic fillet seal around the edge of the base.
S 032-023 中国航空网 www.aero.cn 航空翻译 www.aviation.cn 本文链接地址：757 AMM 飞机维护手册 COMMUNICATIONS 通讯(120)
