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 TB 55-1900-202-12-2
b. Depot Maintenance Activities.
(1) Upon receipt of an engine for overhaul, each engine shall be subject to an as-received test/performance run.
Further, the analytical disassembly and inspection shall list the condition of all major components. Deficiencies noted shall
be recorded on DA Form 5544 (Engine Department Log Book), DA Form 2407 and 2407-1 (Maintenance Request and
Maintenance Request Continuation Sheet), and all applicable TAMMS forms and records, and all written reports required
by contract.
(2) Should engine condition warrant-no wear or deterioration evidenced-recommendations shall be made for the
extension of target TBO, and/or requirements for an interim TBO on the entire engine or on specific components.
(3) Recommendations shall be forwarded by message to Commander, TROSCOM, ATTN: AMSTR-MPD, 4300
Goodfellow Blvd., St. Louis, MO 63120-1798.
5. Procedures.
a. The using unit shall direct the overhaul of their assigned engines (craft) at the next Intermin TBO (as shown in
Tables 1 and 2). Selecting of the engines (craft) shall be in accordance with operating hours. Should the engines hours
exceed the Intermin, every effort should be expended to meet the Target (cyclic drydock) period. Until notification of an
approved increase in TBO's for all engines, only designated engines (see 5b(2) above) should be operated to the next
Interim.
b. Overhaul of engines shall be accomplished in a professional manner; and in keeping with good workmanship.
Engines shall be put in a new/near new condition, whenever possible new repair parts will be utilized. Should it become
necessary to use overhauled parts or components, all parts and components will be inspected and approved by the Chief
Engineer/Maintenance Officer or ships surveyor prior to assembly of same on engine/equipment. Further, should the ship
surveyor and Chief Engineer/Maintenance Officer disagree on condition of parts/components, the latter officers will have
final say.
6. Recording of Engine Time. Record entries in accordance with procedures outlined in Chapter Six (6) AR 56-9. DA
Form 5544 (Engine Department Log Book) will be utilized, and maintained by the Chief Engineer/Maintenance Officer to
record engine hours. All historical data, i.e., overtemperature, unusual noise, uneven compression and firing pressures,
head readings clearance, etc., will be recorded on DA Form 55-44 (Remarks Section). Recorded entries on DA Form
5544 will be used to justify an analytical overhaul; the Chief Engineer/Maintenance Officer will make the determination that
an analytical teardown is necessary to ensure continued trouble free operation.
7. Replacement Engines. NSN's for replacement engines for the following, Landing Craft Mechanized (LCM), Landing
Craft Utility (LCU), Boat Picket Design 4003, Lighter Amphibious Self-propelled 15 and 60 Ton, and the Air Cushioned
Vehicle are:
LCM MOD 0
LCM MOD 1
PORT 2815-00-522-1872
STBD 2815-00-522-1871
LCU MOD 1466
PORT
2815-01-007-6124
MIDSHIPS 2815-00-000-0075
STBD
2815-00-000-0075
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