TM 55-4920-390-13&P
SECTION V
PERIODIC INSPECTION, MAINTENANCE
AND LUBRICATION
5-1. PERIODIC INSPECTION.
a) Periodically inspect for loose connectors, cable clamps, strain relief bushings, etc.
b) Inspect for loose screws, knobs and other mechanical parts.
c) Inspect for damaged or cut cables.
d) Repair or replace above as required.
5-2. FLASH TUBE. The flash tube in the hand-held lamp is the only item requiring periodic replacement. Abusive
handling may result in breakage, obviously requiring replacement. Termination of useful life generally results from
darkening of the inside of the flash tube due to evaporation of the electrodes. Expected life is several years, but if light
level falls to an unacceptably low level and it is attributed to the darkening of the tube, it should be replaced. -If
replacement is required for any reason, proceed as follows (See Fig. 1-3).
WARNING
The flash tube is filled to a high pressure with xenon gas and is subject to explosion. The flash
tube produces harmful ultra-violet radiation. Avoid looking directly at the source when flashing
and WEAR PROTECTIVE GLASSES whenever working with the flash tube.
Avoid finger prints on reflector and flash tube glass.
Do not disconnect any wiring.
a) Remove the hand-held lamp from the case.
b) Remove the four acorn nuts from the plastic cover over the flash tube. Remove the plastic cover. DO NOT
REMOVE THE NUTS HOLDING THE REFLECTOR.
c) Remove the four screws from the rear of the lamp. Remove the rear cover, and let it, and the controls mounted
to it, hang from the wires connected to it. DO NOT DISCONNECT ANY WIRING!
WARNING
WEAR EYE PROTECTION
5-1
