Technical Manual

8-6
Miscellaneous
Hardware
Other items needed for testing the submersible radio include:
• Large water container.
• Deionized (DI) water
• A supply of replacement seals, o-rings, and gaskets (refer to the
ASTRO XTS 3000 R exploded view parts list).
Disassembly and
Reassembly
If disassembly and reassembly of the radio is required, refer to the
“Disassembly/Reassembly Procedures” in this manual.
Disassembly Disassemble the radio according to the “Disassembly” section of this
manual.
Reassembly Reassemble the radio according to the “Reassembly” section of this
manual. Tighten all hardware that was loosened or removed. DO NOT
REASSEMBLE THE RADIO WITHOUT FIRST PERFORMING THE
FOLLOWING PRELIMINARY INSPECTION PROCEDURE:
1. Remove the main seal o-ring from the casting.
2. Inspect the seal area around the casting for foreign material that
might prevent the main seal o-ring from sealing properly.
3. Install a new main seal o-ring; discard the old o-ring.
4. Reassemble the housing.
The main seal o-ring should not be visible when looking at
the back side of the radio. If the seal is visible, it is
improperly installed.
Vacuum Test Refer to the exploded view diagrams and parts lists in this manual.
General The vacuum test uses a vacuum pump and gauge. The pump creates a
vacuum condition inside the radio, and the gauge monitors the radio
for a stable vacuum reading; that is, checking for a properly sealed,
watertight unit. Before starting the vacuum test:
• Remove the battery.
• Remove the universal connector cover to expose the universal
connector.
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C a u t i o n