Pressure Pump Kit, Ntn4265; Miscellaneous; Hardware; Disassembly And Reassembly - Motorola ASTRO XTS 3000 Service Manual

Pressure Pump Kit,
NTN4265

Miscellaneous

Hardware

Disassembly and

Reassembly

Disassembly

Reassembly

Vacuum Test

General

8-6
ordered separately, connects the vacuum hose to the radio's casting.
The vacuum pump kit is also used on Motorola ASTRO SABER R radios.
The adapter with gasket is new to the ASTRO XTS 3000 R.
The pressure pump kit includes a pressure pump with gauge, and a
pressure hose; the pressure pump kit is also used on Motorola ASTRO
SABER R radios. As with the vacuum pump kit above, the NTN9279A
adapter connects the pressure hose to the radio's casting.
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).
If disassembly and reassembly of the radio is required, refer to the
"Disassembly/Reassembly Procedures" in this manual.
Disassemble the radio according to the "Disassembly" section of this
manual.
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, well lubricated, main seal o-ring. Replacement main
seal o-rings are pre-lubricated with Nye Fluorocarbon Gel 865.
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.
C a u t i o n
Refer to the exploded view diagrams and parts lists in this manual.
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.