ENSURING RADIO SUBMERSIBILITY
|. INTRODUCTION
SABER Rradio models meet twice the stringent
requirements of U. S. MIL-STD-810C, Method 512.1,
Procedure |, MIL-STD-810D, Method 512.2, Procedure I,
and MIL-STD-810E, Method 512.3, Procedure 1, which
require the radio to maintain watertight integrity when
immersed in six feet of water for two hours. Radios
shipped from the Motorola factory have passed the
water immersion test and should not be disassembled. If
disassembly is necessary, refer to qualified service
personnel and service shops capable of restoring the
watertight integrity of the radio.
If the radio is accidentally dropped in water, shake
the radio to remove the excess water from the speaker
grille area before operating; otherwise, the sound may
be distorted until the water has evaporated from this
area.
It. GENERAL INFORMATION
To ensure that the radio is truly awatertight unit,
special testing, test procedures, and specialized test
equipment are required. The special testing involves a
vacuum check of the radio and pressure testing
(troubleshooting) for water leaks if the vacuum check
fails. The specialized test equipment is needed to
perform the vacuum check and pressure testing, if
required.
NOTE
When ordering replacement batteries for aradio,
NTN7058A (Ni-Cd, FM approved, Ultra-High-
Capacity) should be ordered.
lil. SPECIALIZED TEST EQUIPMENT
A. Vacuum Pump Kit, NLN9839
The vacuum pump kit includes avacuum pump with
gauge, and avacuum hose. An adapter with gasket
(NTN4264), which must be ordered separately, connects
the vacuum hose to the radio's baseplate. The vacuum
pump kit and adapter are also used on Motorola Expo™
and SABER radios.
B. Pressure Pump Kit, NTN4265
The pressure pump kit includes apressure pump
with gauge, and apressure hose; the pressure pump kit
is also used on Motorola Expo and SABER radios. As
with the vacuum pump kit above, the NTN4264 adapter
connects the pressure hose to the radio's baseplate.
C. Miscellaneous Hardware
Other items needed for testing the submersible radio
include:
®Large water container.
©Fresh water
©Asupply of replacement seals, o-rings, and gaskets
(refer to the exploded view parts lists in the applica-
ble service manual for Motorola part numbers).
IV. DISASSEMBLY AND REASSEMBLY
lf disassembly and reassembly of the radio is
required, refer to the "DISASSEMBLY/REASSEMBLY
PROCEDURES" in the applicable service manual.
A. Disassembly
a
CAUTION 48
It is strongly recommended: that
the radio be deferred. to
personnel and service shops. This
paramount importance as irreparable damage;t0;
the radio can result from service by unauthorized:
persons. lf disassembly °IS necessary:
unauthorized attempts to repair the Tadio, may:
void any existing warranties or extended:
performance agreements with Motorola. 'It is also:
recommended that submersibility' bé checked
-
annually by qualified service personnel :
wwe x
Disassemble the radio according to the
"DISASSEMBLY" section of this manual; refer also to
the "SERVICING MAJOR SUBASSEMBLIES" section.
B. Reassembly
"REASSEMBLY' section of this manual; refer also to the
"SERVICING MAJOR SUBASSEMBLIES" section.
Tighten all hardware which was loosened or removed
per the Torque Specifications table. DO NOT
REASSEMBLE THE RADIO WITHOUT FIRST
PERFORMING THE FOLLOWING PRELIMINARY
INSPECTION PROCEDURE:
1. Remove the main seal o-ring from the control top
panel.
2. Inspect the seal area around the control top panel
for foreign material that might prevent the main seal
o-ring from sealing properly.
3. Install anew main seal o-ring; discard the old o-ring.
4. Check to ensure that both frame stud seals are in
place and are not damaged in any way. Replace
both frame stud seals if any damage or foreign
material is visible.
-
Reassemble---the-radio--according
-
-to
-
the
-
-
The main seal o-nng should not be visible when
looking at the top side of the radio If the seal ts
visible, It ts improperly installed
7
ENSURING RADIO SUBMERSIBILITY
|. INTRODUCTION
SABER Rradio models meet twice the stringent
requirements of U. S. MIL-STD-810C, Method 512.1,
Procedure |, MIL-STD-810D, Method 512.2, Procedure I,
and MIL-STD-810E, Method 512.3, Procedure 1, which
require the radio to maintain watertight integrity when
immersed in six feet of water for two hours. Radios
shipped from the Motorola factory have passed the
water immersion test and should not be disassembled. If
disassembly is necessary, refer to qualified service
personnel and service shops capable of restoring the
watertight integrity of the radio.
If the radio is accidentally dropped in water, shake
the radio to remove the excess water from the speaker
grille area before operating; otherwise, the sound may
be distorted until the water has evaporated from this
area.
It. GENERAL INFORMATION
To ensure that the radio is truly awatertight unit,
special testing, test procedures, and specialized test
equipment are required. The special testing involves a
vacuum check of the radio and pressure testing
(troubleshooting) for water leaks if the vacuum check
fails. The specialized test equipment is needed to
perform the vacuum check and pressure testing, if
required.
NOTE
When ordering replacement batteries for aradio,
NTN7058A (Ni-Cd, FM approved, Ultra-High-
Capacity) should be ordered.
lil. SPECIALIZED TEST EQUIPMENT
A. Vacuum Pump Kit, NLN9839
The vacuum pump kit includes avacuum pump with
gauge, and avacuum hose. An adapter with gasket
(NTN4264), which must be ordered separately, connects
the vacuum hose to the radio's baseplate. The vacuum
pump kit and adapter are also used on Motorola Expo™
and SABER radios.
B. Pressure Pump Kit, NTN4265
The pressure pump kit includes apressure pump
with gauge, and apressure hose; the pressure pump kit
is also used on Motorola Expo and SABER radios. As
with the vacuum pump kit above, the NTN4264 adapter
connects the pressure hose to the radio's baseplate.
C. Miscellaneous Hardware
Other items needed for testing the submersible radio
include:
®Large water container.
©Fresh water
©Asupply of replacement seals, o-rings, and gaskets
(refer to the exploded view parts lists in the applica-
ble service manual for Motorola part numbers).
IV. DISASSEMBLY AND REASSEMBLY
lf disassembly and reassembly of the radio is
required, refer to the "DISASSEMBLY/REASSEMBLY
PROCEDURES" in the applicable service manual.
A. Disassembly
a
CAUTION 48
It is strongly recommended: that
the radio be deferred. to
personnel and service shops. This
paramount importance as irreparable damage;t0;
the radio can result from service by unauthorized:
persons. lf disassembly °IS necessary:
unauthorized attempts to repair the Tadio, may:
void any existing warranties or extended:
performance agreements with Motorola. 'It is also:
recommended that submersibility' bé checked
-
annually by qualified service personnel :
wwe x
Disassemble the radio according to the
"DISASSEMBLY" section of this manual; refer also to
the "SERVICING MAJOR SUBASSEMBLIES" section.
B. Reassembly
"REASSEMBLY' section of this manual; refer also to the
"SERVICING MAJOR SUBASSEMBLIES" section.
Tighten all hardware which was loosened or removed
per the Torque Specifications table. DO NOT
REASSEMBLE THE RADIO WITHOUT FIRST
PERFORMING THE FOLLOWING PRELIMINARY
INSPECTION PROCEDURE:
1. Remove the main seal o-ring from the control top
panel.
2. Inspect the seal area around the control top panel
for foreign material that might prevent the main seal
o-ring from sealing properly.
3. Install anew main seal o-ring; discard the old o-ring.
4. Check to ensure that both frame stud seals are in
place and are not damaged in any way. Replace
both frame stud seals if any damage or foreign
material is visible.
-
Reassemble---the-radio--according
-
-to
-
the
-
-
The main seal o-nng should not be visible when
looking at the top side of the radio If the seal ts
visible, It ts improperly installed
7
