CHAPTER 8.1
DEPOT OVERHAUL STANDARDS
8.1-1. Applicability of Depot Overhaul Standards
(3) Remove the MK-980A/PPS-5 from its transit
cases as described in chapter2. Inspect all metal and
The tests outlined in this chapter are designed to
painted surfaces for cracks, dents, and other defects
measure the performance capability of repaired equip-
caused by corrosion, abrasion, or mechanical injury.
ment. Equipment that is to be returned to stock should
(4) Clean exterior surfaces of MK-980A/PPS-5 as
meet the standards given in these tests.
described in chapter 4.
8.1-2. Applicable References
(5) Remove the MK-980A/PPS-5 component chassis
a. Repair Standards. Applicable procedures of the
from the case as described in chapter 7. Inspect the
depot performing this test, and its general standards for
chassis for damage, missing parts, and the condition of
repaired electronic equipment given in TB SIG 355-1, TB
the finish.
SIG 355-2, and TB SIG 355-3, form a part of the require-
(6) Remove each testblock from test panel chassis
ments for testing this equipment.
as described in chapter 7. Inspect each test block for
b. Technical Publications. The following technical
defective electronic circuitry parts and broken, loose or
publications are applicable to this equipment.
corroded foil.
(7) Replace the test block into chassis and then into
Equipment and subject
Publication
Organizational Radar Set
TM 11-5840-298-12
case. Perform the operational tests given in chapter 8 to
Manual Radar Set
determine the nature of the problem.
AN/PPS-5
b. Disassembly of End ltem. Disassembly of the MK-
DS, GS, and Depot Main-
TM 11-5840-298-35
980A/PPS-5 components is confined to the removal of the
tenance Manual, Radar Set
chassis from the case and the removal of the test block
AN/PPS-5
from the test panel chassis.
C.
Modification Work Orders. Perform all applicable
c. Temporary Preservation. For temporary preservtion
modification work orders pertaining to this equipment
pending maintenance, the chassis, all test block and test
before making the tests specified. DA Pam 310-1 lists all
panel components shall be enclosed in waterproof,
available MWO's.
greaseproof wrapper.
8.1-3. Test Facilities Required
8.1-3.2. Maintenance Overhaul and Repair
The following equipments, or suitable equivalents, will
a. Disassembly. In general, disassembly of the MK-
be used in determining compliance with this specific
980A/PPS-5 shall be based on the result of the preshop
standard:
Equipment
Applicable Literature
National Stock No.
Qty Reqd
Voltmeter, Electronic AN/USM-98
1
TM 11-6625-438-10
1
Variable Power Transformer TF-171A/
TM 11 -5905-203-15F
USM
Insulation Breakdown Test Set
1
TM 11-6625-273-12
AN/GSM-6
Multimeter ME-26 (*)/U*
TM 11-6625-200-12
1
Multimeter TS-352B/U
TM 11-6625-366-15
1
1
Oscilloscope AN/USM-140D
TM 11-6625 -535-15-1
Power Supply PP-2309A/U
1
TM 11-6130-245-15
`Indicates Multimeters ME-26A/U, ME-26C/U, and ME-26 D/U
analysis, including a thorough visual inspection, the
b. Additional Equipment
performance of operational test, and shall be limited to
(1) Power Supply PP-450/PPS-5, NSN 5840-01-012-
the removal and separation of the chassis and test block.
8792; used with the AN/PPS-5
Normally disassembly should not include the separation
(2) Plug, seven-contact, push-pull DS-type Quick-
of bonded, soldered, welded or riveted parts nor the
disconnect, NSN 5935-00-076-1479. Used to prefabricate
removal of electronic circuitry parts (internal wiring,
cable (fig. 8.1-3.
resistors, capacitors, transistors, etc.) unless to clean,
8.1-3.1
inspect or test a part.
a. Unpacking, Cleaning, and Inspection.
b. Cleaning. Cleaning procedures, methods and materiel
(1) If the MK-980A/PPS-5 is received in the shipping
for the MK-980A/PPS-5 shall be in accordance with
container, unpack the equipment as described in chapter
cleaning requirements of TB SIG 355-1. Moisture/fungus
proofing instructions, materiel and inspection require-
(2) Physically check all tags and forms attached to
ments shall be specified in TB SIG 355-3.
the MK-980-A/PPS-5 to determine the reason for removal
`.----'
c. Repair. Repair procedures for the MK-980A/PPS-5
from service and other discrepancies.
Change 12
8.1-1
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