0201_A_Port_PTO_clutch.docx

USNS JOSHUA HUMPHREYS

(T-AO 18)

ITEM NO. 221 CATEGORY "A" MSC/MCT

PORT PTO CLUTCH ; OVERHAUL AND INSPECT.

1. ABSTRACT

0. Perform an inspection and repair of the Port power-take off clutch.

1. REFERENCE/ENCLOSURE

1. References

0. NAVSEA Tech Man T9241-AL-MMC-010, Main Reduction Gear (available onboard).

0. NAVSEA Tech Man T9233-AF-MMC-010, Main Diesel Engine (available onboard).

1. Enclosure: None

1. ITEM LOCATION/DESCRIPTION

2. Location/Quantity

Period of Performance: 15 FEBRUARY 2020 – 19 FEBRUARY 2020

Place of Performance: Naval Station Norfolk

Location: Main Engines, Lower engine room.

3.1.1 Quantity: one (1), Power Take Off clutch 28VC1000-Air Flex Clutch.

1. GOVERNMENT FURNISHED EQUIPMENT/MATERIAL/SERVICE

3. Material:

Power Take Off Clutch 28VC1000 Air Flex Clutch T-AO 187, 188, 193 Paragraph 3.1.4 (Qty 1)

1.

1. NOTES

5. Contractor is responsible for providing the Manufacturer Authorized Technical representative.

1. STATEMENT OF WORK REQUIRED

6. All work shall be accomplished in accordance with references 2.1.1, 2.1.2, and under the direct supervision of a manufacturer's representatives listed in paragraph 7.7. Cost of rep shall be borne by the contractor.

0. All inspections, readings, and testing to be witnessed by MSCREP, Chief Engineer, Manufacturer tech rep, and ABS Surveyor.

6. Perform an initial and final alignments check of the Port main engine clutch/coupling and the power takes off clutch coupling ensure that all drive components are within manufacturer specification.

1. Alignment verification shall be accomplished with ships alignment tool.

1. Submit a written report with the above results to the MSCREP.

6. Remove, convey to shop, and disassemble the equipment identified in paragraph 3.1.1 in accordance with the technical representative and reference 2.1.1 and 2.1.2.

2. Clean and inspect all components using manufacturer's approved solvents and inspect all disassembled components in accordance with manufacturer's specifications.

7.3.1.1 Clean and blast Clutch housing drum and paint in accordance with Technical representative instructions.

2. Take and record all clearances (including as found and final) required by manufacturer, prepare and submit a chart noting above measurements as compared with design clearances.

2. Provide an inspection report stating conditions found and recommended repairs.

2. Clean all disturbed components, hone/dress all nicks, burr, and minor imperfections.

2. Reassemble and reinstall all components, replace with new all "O-ring, seals, springs, torque bars, washers and bearings. Parts are indicated in par 4.1.

4. Replace the rotor seals with new seals provided in paragraph 4.1.

2. Realign the clutch/couplings in accordance with manufacturer’s specifications using reference 2.1.1 and 2.1.2 as guidance.

6. Final alignment readings shall be taken in presence of MSC Rep and shall be accomplished using laser alignment equipment.

6. Upon completion of all work manufacturer’s rep shall submit a completion report stating conditions “as found” and “as released.” Report shall include all measurements taken and a listing of all parts/components replaced.

6. Inspection/Testing

5. Perform operational testing during dock trial (4 hrs minimum) proving all repairs.

5. Preparation of Drawings: None

6. Manufacturer's Rep

6. The services of an authorized manufacturer’s representative for the duration of all work shall be provided by the Contractor.

1. GENERAL REQUIREMENTS

7. None additional.