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A
737-300/400/500MAINTENANCE MANUAL
(b) Measure the resistivity with a multimeter. 1) The maximum permitted resistivity is 300,000 ohms/square.
NOTE: This resistivity range is for general conductivity
____ only. For Radome conductivity refer to AMM 53-52-00/701.
S 117-010-B00
(7) If the resistivity of the conductive coating is more than 300,000 ohms/square, do these steps:
(a)
Rub the conductive coating with 240 grit (minimum grit number) abrasive paper.
(b)
Clean the surface with a clean cheesecloth that is soaked with aliphatic naphtha.
(c)
Dry the surface with a clean cheesecloth.
(d)
Apply more conductive coating with the steps given above.
(e)
Do a resistance check again.
S 117-011-B00
(8) If you will apply a protective or decorative layer on the conductive coating, clean the surface with a cheesecloth that is soaked with aliphatic naphtha. Dry the surface with a clean cheesecloth.
180
170
160
150
140
130
120
110
100
90
80
70
TIME (MINUTES)
Drying Time - BMS 10-21, Type III
Figure 702
TEMPERATURE (`F)
EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. ú
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737-300/400/500MAINTENANCE MANUAL
ABRASION RESISTANT TEFLON FINISH - CLEANING/PAINTING
____________________________________________________
1. General_______
A. This procedure contains one task. The task is to apply abrasion resistant teflon finish.
B. Use a brush when you cannot use a spray gun. Also use a brush when the dry-to-install time is between 1 to 2 hours.
TASK 51-21-81-377-001-B00
2. Apply Abrasion Resistant Teflon Finish______________________________________
A. Equipment
(1)
Spray Equipment
(2)
Stiff bristle brush
(3)
Vacuum Cleaner
(4)
Wooden or plastic scraper
B. Consumable Materials
(1) Laminar teflon coating kit, colors white or
gray
(a)
C00002 X-500 Coating Kit, Color W (White)
SPRAY BRUSH Resin Component 7-W-27 7-W-27FC Hardener 10-C-81 10-C-81
(b)
C00009 C-500 Coating Kit, Color G (Gray)
SPRAY BRUSH Resin Component 7-X-74 7-X-74FC Hardener 10-C-81 10-C-81
(2)
Reducer
(a)
C00007 66-C-28 (white)
(b)
66-C-20 (Gray)
(3)
Solvents
(a)
B00153 Toluene, TT-T-548 (JAN-T-171, Grade A, optional)
(b)
B00151 Methyl Isobutyl Ketone (MIBK), TT-M-268
(4)
B00192 Cleaning Solvent, General Purpose BMS
3-2, optional: Aliphatic Naphtha,
TT-N-95
(5)
B00148 Methyl Ethyl Ketone (MEK), TT-M-261
EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. ú
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A 737-300/400/500MAINTENANCE MANUAL
CURE TEMPERATURE (MINIMUM)
TIME (HOURS)
____ DO NOT USE THIS CHART
NOTE: FOR FC MATERIALS. (BRUSH APPLY TEFLON)
Cure Time for Spray Application Teflon
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