The MCH-100-A heat gun has been
for flight line or flight deck use. All other
electric motor type heat guns are not authorized
for flight line or flight deck use due to
motor type heating tools are safe for use by
personnel at the organizational maintenance
Figure 1. Typical Strain Relief
level to repair aircraft wiring in a hangar or
hangar deck / flight line environment,
provided the aircraft meets the gas-free
environment criteria (NAVAIR 01-1A-35, or
AF T.O. 1-1-3), and there are no EMI restrictions.
Do not perform wire repair while using
As all NAVAIR connector and accessory
explosive solvent/paint products on the
documents are transitioned to non-government
standards, the Society of Automotive Engineers
(SAE), will become the preparing activity and
When using a heat tool, do not use electrical
the Navy will adopt the documents, the
power from the aircraft being repaired. Use
drawing number prefix will change from MS
electrical power from a ground power unit.
to AS. The main part number designation
remains the same, with the "M" prefix, such as
Use of nitrogen with the HT-900B/HT-920B
M81511/17-08. At times the entire item may be
heat gun in an enclosed area can be hazardous.
superseded by another. There are many cases
Discharge of nitrogen into a poorly ventilated
where documents have been cancelled without
area can result in asphyxiation.
replacements, each case was reviewed and
some information has been retained in this
volume "for reference use only".
Avoid using metal tooling to remove and install
2. This Work Package (WP) covers connector
backshells. These tools can damage the
accessories used with MIL-C-81511 Series 1, 2, 3 and 4
backshell and connector. Non-metallic tools
connectors, their function, associated tools, assembly,
are designed to wear before damaging
and procurement information.
connector or backshell.
3. C O N N E C T O R A C C E S S O R I E S . C o n n e c t o r
Do not let saddle clamps directly contact cable
accessories are components added to a connector to
or harness. The amount of tape used must be at
enhance its operational characteristics.
least one layer plus the amount needed to
build up cable for a secure fit of clamp to
4. CABLE CLAMP. A cable clamp is a cable support
bundle when screws are tightened and there is
or clamping device which requires the use of an
intermediate component for attachment to the back of
For best results when applying silicone rubber
tape, keep hands free of dirt and oil. When
5. STRAIN RELIEF. A strain relief (backshell) is a
assembly is completed leading edge of tape
cable support or clamping device which attaches
should protrude 1/8 inch through clamp.
directly to the connector (Figure 1).
White dot on adapter tool must be in line with
6. ENVIRONMENTAL EMI/RFI BACKSHELL. This
master key of connector before tool and
type of backshell is used when moisture entry and
connector are mated. Spinning adapter tool
EMI/RFI protection is needed.
onto connector until it slips into place causes
unnecessary wear on tools, keys, and keyways.