TM 1-1270-476-30
2-2
Section II. GENERAL MAINTENANCE PROCEDURES
Subject
Para
Page
Standard Maintenance Practices . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2-4
2-2
Cabling and Wiring Harness Assembly Repair . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2-5
2-4
Sealing Compounds and Adhesives Removal, Application, Curing, and Outgassing .
2-6
2-12
Electrical Bonding Surface Preparation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2-7
2-38
Electrostatic Discharge Sensitive (ESDS) Device Handling Requirements . . . . . . . . .
2-8
2-40
2-4. STANDARD MAINTENANCE PRACTICES
This paragraph contains general information on certain practices that apply, as required, during
maintenance.
a. TAGGING AND UNTAGGING WIRES DURING SOLDERING PROCEDURES
When a maintenance procedure requires soldering, the technician performing the task will tag the
wires as they are removed. The tags will state the exact place where the wires belong. After the wires
are installed the tags will be removed and the solder connections will be inspected.
b. SHORTING CAPACITORS
Before working on a unit where charged capacitors may exist, short each lead of capacitor to
ground. Refer to TB 385-4 for proper shorting instructions.
c. CLEANING OF OPTICS EXPOSED DURING MAINTENANCE
If removal of a component exposes optic surfaces, check for dirt and smudges. If optics are
exposed for more than 5 minutes, they must be protected. If cleaning is required, perform optics cleaning
(TM 1-1270-476-20).
d. ELAPSED TIME INDICATORS
If the elapsed time indicator on the environmental control system, electronic control amplifier
assembly, night sensor assembly, visual multiplexer assembly, day sensor subassembly, TV sensor
assembly, control panel assembly HOD, indirect view display assembly, alphanumeric display assembly,
TADS electronic unit assembly, TADS power supply assembly, laser tracker/receiver assembly,
boresight assembly, and laser electronics unit has reached its run time limits, replacement is not
required as it does not effect LRU operational criteria. If physical damage is evident, removal is
necessary. Refer to Chapter 4 for elapsed time indicators removed at field level.
