EPL
PES
AIRPLANE SEAT
Figure 2013
Page 2013
B/E AEROSPACE
COMPONENT MAINTENANCE MANUAL MILLENNIUM. 88813 SERIES
(2) Ground Studs, Types Utilized
(a) Direct Ground Stud - A ground stud installation where necessary terminal(s) is/are installed simultaneously with the ground stud. The ground stud must be removed to remove the terminal(s). Refer to Figures 2014 and 2015.
CORROSIVE PROTECTIVE WASHER
CLEANED SURFACE
METAL STRUCTURE
CORROSIVE PROTECTIVE WASHER
FASTENER
Figure 2014 - Direct Ground Stud with Single Terminal
CLEANED SURFACE
CORROSIVE PROTECTIVE WASHER
METAL STRUCTURE
CORROSIVE PROTECTIVE WASHER
FASTENER
Figure 2015 - Direct Ground Stud with Multiple Terminals
Page 2014
B/E AEROSPACE
COMPONENT MAINTENANCE MANUAL
MILLENNIUM. 88813 SERIES
(b)
Preinstalled Ground Stud - A ground stud installation that allows terminals (installed by separate process) to be installed and/or removed without removing the ground stud.
(c)
Standard Ground Stud - A ground stud comprised of standard fasteners, washers and nuts. Refer to Figures 2016 and 2017.
TERMINAL
METAL STRUCTURE
PRESSURE WASHER
Figure 2016 - Standard Ground Stud with Single Terminal
TERMINAL
METAL STRUCTURE
PRESSURE WASHER
SELF-LOCKING NUT PRESSURE WASHER
PRE-INSTALLED GROUND STUD
CORROSIVE PROTECTIVE WASHER
SELF-LOCKING NUT PRESSURE WASHER
PRE-INSTALLED GROUND STUD
CORROSIVE PROTECTIVE WASHER
Figure 2017 - Standard Ground Terminal with Multiple Terminals
Page 2015
B/E AEROSPACE
COMPONENT MAINTENANCE MANUAL
MILLENNIUM. 88813 SERIES
(3) Grounding Procedures
(a)
Each seat must be provided with a #10 ground stud to ground equipment and structure not otherwise attached to main static ground.
(b)
If a ground stud needs to be installed or reinstalled, refer to Boeing document BAC5117 for specifications on surface preparation, materials, and testing.
(c)
When more than one terminal is installed on one ground stud, put the largest terminal next to the corrosion protective washer and stack the other terminals in order of decreasing size. Fan the terminals around the stud whenever possible. Refer to Figure 2018.
(d)
A maximum of six terminals may be installed on a single ground stud, whether primary or secondary bonding stud.
(e)
For restricted spaces, a ground strap terminal may be bent 90 degrees one time only. Ensure that enough clearance exists between the terminal shank and the ground stud to allow installation and removal without further bending. Repeated bending of a terminal may cause it to break.
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