TM 55-2840-231-23
Captive bolts are part of a component and remain installed (captive) on the component after being
unthreaded from the mounting surface in which they are threaded.
When the word “loosen” is used in reference to a captive bolt, it means that the captive bolt must be
removed from the mounting surface but not from the component to which it is captive.
To remove captive bolts from parts to which they are attached, pull bolt away from part until threads
engage threaded hole in part. Then turn bolt counterclockwise until it is disengaged.
Replace captive bolts as follows:
a.
AVUM: Try to remove bolt by hand. If bolt hangs up, return part to AVIM.
Cap or plug all openings.
b.
AVIM: Chase threads enough to allow removal by hand. Inspect insert in accessory for damage.
There are two types of electrical coupling connectors: those with hex coupling nuts and those with
knurled coupling rings. Observe the following practices:
l Do not lubricate electrical connectors.
l Do not use tools on knurled coupling rings.
l Do not cross thread coupling connectors.
Hex coupling nuts. Install, hand-tighten, and wrench arc tighten hex coupling nuts according to the
assembly instructions in this manual.
Knurled coupling rings. Mate connectors that have knurled coupling rings as follows:
NOTE
When mating or disconnecting a connector that
has a knurled coupling ring, ratcheting will be
felt as the ring is turned. This is normal. It is
part of the self-locking feature of the connector.
If there is no ratcheting, the cable will be re-
moved and the. connector replaced.
a.
Check mating receptacle for bent pins. If they are bent, see applicable inspection paragraph for
repair limits.
b.
Aline axis of electrical cable plug connector with axis of mating receptacle to avoid damage to pins
in receptacle.
H-2
