Figure 4-30 Gmu 11 Overbraid Installation - Garmin GI 275 Installation Manual

4.6.1.3.3 Overbraid Termination Methods
Overbraid must be terminated with an appropriate lug by one of the two following approved methods.
Whichever method is used, overbraid pigtail length must not exceed 6 inches. Refer to Figure 4-31.
Method A
1. Carefully separate overbraid wire strands by hand to create an opening in the overbraid for passage
of the GMU 11 connector and cables.
CAUTION
Do not cut an opening in the overbraid strands. Loose overbraid wire ends can chafe the
cable and cause the GMU 11 to malfunction.
2. Trim the overbraid pigtail to a maximum length of 2 inches.
3. Terminate the braid pigtail in an appropriate terminal lug.
Method B
1. Comb out a maximum of 2 inches of overbraid pigtail.
2. Twist the pigtail and terminate it in an appropriate terminal lug.
4.6.1.3.4 Overbraid Terminal Bonding
Electrical bond preparation for all aluminum-to-aluminum interfaces must be done in accordance with
SAE ARP1870A Section 5.1 and re-finished in accordance with Section 5.5. The overbraid terminal lug
must be electrically bonded to a #10 stud installed in accordance with AC 43.13-1B Section 11-189, as
well as the following restrictions:
1. If possible, use an existing tooling hole to install the stud.
2. If no suitable tooling hole exists, use an existing fastener (#10 or larger).
3. If there is no suitable fastener, install a new #10 stud as follows:
a. When adding a new stud hole to the rib, the center of the hole must be located a minimum of
1 inch away from any existing, non-stiffened rib holes.
b. The new stud hole must be located such that the terminal lug face, neck, or attaching hardware
will not intrude into the flange bend radius of any rib edge or stiffened rib hole. Refer to
SAE AS25036 for terminal lug dimensions.
4. Verify overbraid terminal bonding by checking resistance between the overbraid and the rib with
the GMU 11 connector disconnected. Resistance should be less than 2.5 mΩ.
190-02246-10
Rev. 11

Figure 4-30 GMU 11 Overbraid Installation

GI 275 Part 23 AML STC Installation Manual
Page 4-46