(c)  
Put the wet towel on the end of the discharger rod.

 (d)  
Put the megohmmeter connectors on the base and on the wet towel at the end of the rod.

 (e)  
Measure the resistance. 1) Resistance should be between 6 and 100 Megohms for the trailing edge or tip type dischargers. 2) If the resistance measured is high, make sure the meter

 connector and the discharger rod touch the wet towel. 3) Add more water if it is necessary and measure again. 4) Use the lowest measured value.
 S 864-031
 (4)  Put the surface back to a satisfactory condition:
 (a) Repair the Flame Spray (SRM 51-70-14), if it is necessary.
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A
737-300/400/500MAINTENANCE MANUAL
 S 864-047
 (5)  Complete the bare surface of the airplane to look the same as the adjacent area.
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A
737-300/400/500MAINTENANCE MANUAL
 STATIC DISCHARGER - INSPECTION/CHECK
____________________________________
 1.  General
_______
 A.  This procedure has two tasks. The tasks are an inspection and a resistance measurement of the static dischargers. You must do a check of the static dischargers regularly. If you do not examine them, you could get static interference and bad radio operation.
 TASK 23-61-00-216-011
 2.  Static Discharger Inspection
____________________________
 A.  Access
 (1)  Location Zone
 300 Left Wing
 400 Right Wing
 700 Empennage

 B.  Procedure
 S 216-002
 (1)  Do a visual check to see that all the dischargers attach correctly to their base:
 (a)  Make sure there is no lightning damage.
 NOTE: This damage will be seen as burned or rough areas on the
____ black conductive surfaces.
 (b)  You could also find damage as pits on the discharger base.
 S 216-003
 (2)  
Do a check for erosion of the discharger tips.

 S 216-004

 (3)  
Do a check for erosion of the discharger surface:

 (a)  
Leading edge erosion of the dischargers must not extend more than a third the width of the discharger.

 (b)  
A discharger that shows damage must be replaced.

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A 737-300/400/500MAINTENANCE MANUAL
DISCHARGER
BASE

SETSCREW
DISCHARGER ROD
FWD SEE A
TIP DISCHARGER
(EXAMPLE)

SEE
FUEL TANK VENT (BOTTOM SIDE OF LEFT AND RIGHT WINGS)
SEE C
FUEL TANK VENT (BOTTOM SIDE OF LEFT AND RIGHT WINGS)
SETSCREW DISCHARGER ROD
DISCHARGER FWD
BASE 3 TRAILING EDGE DISCHARGERS AND 1 TIP DISCHARGER ON VERTICAL STABILIZER
VERTICAL STABILIZER
A

B
2 TRAILING EDGE DISCHARGERS AND 1 TIP DISCHARGER PER HORIZONTAL STABILIZER
HORIZONTAL STABILIZERS B
3 TRAILING EDGE DISCHARGERS AND 1 TIP DISCHARGER PER WING
WINGS
C

TRAILING EDGE DISCHARGER (EXAMPLE)
Decoupled Static Discharger Inspection Figure 601
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