TM 1-1270-476-30
2-38
2-7. ELECTRICAL BONDING SURFACE PREPARATION
INITIAL SETUP
Tools
Aircraft armament repairman tool set
Acid-type safety goggles
Rubber apron
Rubber gloves
Materials (appendix C)
Chemical film (Item 9)
Cheesecloth pad (Item 42)
Emery paper, 400 grit (Item 44)
Trichloroethane (Item 62)
Personnel Required
68J Aircraft Fire Control Repairer
Equipment Conditions
Maintenance task in progress
1. Sand bonding surface to bare metal for an area
1-1/2 times diameter of grounding terminal.
WARNING
TRICHLOROETHANE
• Flammable, toxic, irritating. Can cause
breathing problems, eye damage.
• At 325°F, gives off phosgene gas, which can
cause death or serious injury.
• Don’t: Use near flames or sparks, let it get
on skin, or breathe vapors.
• Do: Use in well-ventilated area, close
containers when not using. Wear acid-type
safety goggles, rubber gloves, and rubber
apron.
• If it contacts skin or eyes, wash affected
areas with running water. Get medical help
at once.
• If you experience any breathing problems,
get to fresh air at once.
2. Clean sanded surface with a cheese-cloth pad
and trichloroethane.
3. Let surface air dry for 5 minutes.
