Attachment_J-1.pdf

N5523619R0016

Attachment J-1

LCAC 78 Emergent Repairs SOW

1. Conduct and record Drive Train Alignments on LCAC shafts 1, 2, 3 & 4 IAW WI

243-11-001. Submit report of findings to supervisor.

2. (V) (G) Conduct a joint visual inspection of #4 Lift Fan Volute Assembly for pitting, corrosion, deformation, cracking, or other damage.

2a. Submit one legible copy, in hard copy or approved transferrable media, of a report listing results of the Joint Visual Inspection of item 2 to the SUPERVISOR.

3. Remove existing damaged and replace with new support structure of #4 Lift Fan lower volute assembly to include up to 200” of channel (FN 65 and 66 of 579546 rev

P), and up to 65” of I beam (FN 62 of 579546 rev P) as required.

4. Remove and replace CCD-361 Rev 01 (Modification to Lift Fan Bearing Mount

Support Structure, Accomplish) on FWD and AFT side of Lift Fan #4 Lower Volute assembly.

5. Accomplish the requirements of 009-12 including Table 4, Column C, Lines One through 7.

5a. Accomplish nondestructive testing in accordance with Line 10

6. The following Work Items will be accomplished along with the repairs listed in the

Statement of work above;

a. 243-11-001 Shafting; remove, turnover and install

b. 248-11-001 LCAC Craft Change Document-361 Rev 01, Modification to Lift

Fan Bearing Mount Support Structure; accomplish

c. 248-11-004 Lift Fan Bearing; replace

d. 248-11-005 Starboard Lift Fan Blade Impeller Assembly Repair; accomplish

e. 248-11-006 Lift Fan Shaft Journal and Thread repair; accomplish

f. 248-12-005 Port Lift Fan Blade Impeller Assembly Repair; accomplish

References:

1. Standard Items FY20

2. S9240-AA-TMM-078 Rev 02, Operation and Maintenance Manual for Landing

Craft, Air Cushion (LCAC) Transmission System (LCAC 78)

3. S9248-AA-TMM-078 Rev 02, Operation and Maintenance Manual for (SLEP)

Landing Craft, Air Cushion (LCAC) Lift System Fans and Ducting (LCAC 78)

4. 248-5749540 Rev AH, LCAC Volute Final Assembly

5. 611-8677590 Rev -, Bow Thruster Assembly Lift Sling

6. 248-5749539 Rev L, LCAC Lift System Installation

7. 248-5749550 Rev L, LCAC Impeller Assy

8. 248-5749552 Rev Q, LCAC Blade Assy - Impeller Lift Fan 63" Dia

9. 248-5749551 Rev D, LCAC Back Plate - Impeller Lift Fan 63" Dia.

10. 248-8430497 Rev -, CCD 581 Rev 00 LCAC Lift Fan Blade Foam Fill Procedure

11. 7614-947941 Rev A, Process Specification for Structural Shimming Compound.

12. 248-5749555 Rev H, LCAC Shaft Assembly

13. LCAC Craft Change Document-391 Rev 01, Lift Fan Shaft Journal and Thread

Repair

14. S9248-AA-TMM-078 Rev 03, Operation and Maintenance Manual for Landing

Craft, Air Cushion (LCAC) Lift System Fans and Ducting (LCAC 78)

15. 248-5749562 Rev P, LCAC Bearing Mount Details

16. 248-5750322 Rev J, LCAC Bearing, Ball Lift System

17. 248−6732495 Rev K, C/A 361D LCAC Mods to Lift Fan Brg Mt Support

Structure

18. CCD 361D Rev 01, Modification to Lift Fan Bearing Mount Support Structure;

accomplish

19. 151−6908242 Rev A, C/A 361 LCAC Lift Fan FOD Screen Mods Incid to

Bearing Support Structure Stiffening

20. 835−6732738 Rev −, Lift Fan Bearing Foundation Engineering Data Package for

LCAC AER−229

21. 20407 Rev −, LCAC Hand Hold Assembly

22. 151−5749279 Rev K, LCAC Screen, Webbing Lift Fan

23. 234−5750025 Rev PC, LCAC Water Wash Installation Engine Systems

24. 568−5749803 Rev AB, LCAC Hydraulic−Installation Bow Thruster

25. 248−5749546 Rev P, LCAC Volute Sub−Assemblies

26. 240-5750400 Rev G, LCAC Transmission System

27. 241-5750320 Rev F, LCAC Power Transmission Installation

SSP: 1 of 3 ITEM NO: 243-11-001

EXPORT CONTROLLED DATA: This document contains technical information whose export is governed by U.S.

International Traffic in Arms Regulation (ITAR). This information must not be transferred to a foreign person/entity without proper authorization of the U.S. Government. Violations may result in administrative, civil, or criminal penalties.

SHIP: ASSAULT CRAFT UNIT 5 (ACU ITEM NO: 243-11-001

45411)

COAR: PCN:

CMP:

LC78

NONE

PLANNER: DENISTON, MARK

1. SCOPE:

1.1 Title: Shafting; remove, turnover and install

1.2 Location of Work:

1.2.1 Main Deck, Starboard

1.2.2 Main Deck, Port

1.3 Identification:

1.3.1 Quantity (4 EA), Power Transmission Shafting Assembly

1.3.1.1 Quantity (2 EA), Sections S1 through S3, Starboard, Figure 8-1 of 2.2

1.3.1.2 Quantity (2 EA), Sections S2 through S4, Port, Figure 8-1 of 2.2

2. REFERENCES:

2.1 Standard Items

2.2 S9240-AA-TMM-078 Rev 03, Operation and Maintenance Manual for Landing Craft, Air Cushion (LCAC) Transmission System (LCAC 78)

2.3 240-5750400 Rev G, LCAC Transmission System

2.4 241-5750320 Rev F, LCAC Power Transmission Installation

3. REQUIREMENTS:

3.1 Accomplish alignment checks for Total Indicated Runout (TIR) and coupling deflections for the shafting listed in 1.3 and located in 1.2, in accordance with Paragraphs 6-6.5.8, 7-4.5.3 and 7-5 of 2.2.

Report: RESULTS OF TIR SITUATIONAL + 3 days

3.1.1 Submit one legible copy, in hard copy or approved

transferrable media, of a report listing results of the requirements of 3.1 to the SUPERVISOR.

3.2 Remove the shafting listed in 1.3 and located in 1.2 from the power transmission system, using 2.4 through 2.5 as guidance.

SSP: 2 of 3 ITEM NO: 243-11-001

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3.2.1 Match-mark laminated shim spacers and fasteners and retain for reuse.

3.2.2 Remove high spots, burrs, abrasions, nicks, corrosion, gasket material, and foreign matter from exposed flanges and mating surfaces.

(V)(G) "SHAFT INSPECTION"

3.3 Accomplish a visual external inspection of the shafting removed in

3.2 for deterioration, pitting, cracks, and areas of damage or distortion. Turn over each removed shaft to the SUPERVISOR for disposition.

Report: INSPECTION RESULTS SITUATIONAL + 3

3.3.1 Submit one legible copy, in hard copy or approved

of 3.3 to the SUPERVISOR.

3.4 Install the equipment listed in 1.3.1 and located in 1.2 and provided as Government Furnished Material (GFM) in 5.1, in accordance with 2.4, using 2.2, 2.3, 2.5 as guidance.

3.4.1 Install laminated shim spacers and fasteners match-marked and retained in 3.2.1, in accordance with 2.4.

3.4.2 Align shafting in accordance with Paragraphs 6-6.5.8, 7-4.5 and 7-5 of 2.2, and 2.3.

(V)(G) "SHAFT ALIGNMENT VERIFICATION"

3.5 Accomplish shaft alignment verification in accordance with Paragraphs 6-6.5.8, 7-4.5 and 7-5 of 2.2.

Report: ALIGNMENT VERIFICATION REPORT SITUATIONAL + 3

3.5.1 Submit one legible copy, in hard copy or approved

of 3.5 to the SUPERVISOR.

3.6 Accomplish the requirements of 009-32 of 2.1 for new and disturbed

4. NOTES:

4.1 Work in this item interfaces with Work Items 248-11-005, Starboard Lift Fan Blade Impeller Assembly Repair; accomplish and 248-12-005, Port Lift Fan Blade Impeller Assembly Repair; accomplish.

SSP: 3 of 3 ITEM NO: 243-11-001

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5. GOVERNMENT FURNISHED MATERIAL(GFM):

5.1 LLTM:

1.

2.

5.2 PUSH MATERIAL:

1. None.

5.3 KITTED MATERIAL:

TOTAL

QUANTITY

PROVIDED

NAME Of PART

PIECE

NO.

REF

NATIONAL

STOCK

REQ

PARA NO.

Shaft, Assembly 5750625- 01-191-

2 EA S1 & S2 1 2.4 3770 3.4

Shaft, Assembly 5750625- 01-189-

2 EA S3 & S4 2 2.4 8956 3.4

SSP: 1 of 3 ITEM NO: 248-11-001 EXPORT CONTROLLED DATA: This document contains technical information whose export is governed by U.S.

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ITEM NO: 248-11-001

COAR: PCN: LC78

PLANNER:

DENISTON

1.1 Title: LCAC Craft Change Document−361 Rev 01, Modification to Lift Fan Bearing Mount Support Structure; accomplish

1.2 Location of Work:

1.2.1 Machinery Deck, Frames 10, Port

1.3 Identification:

1.3.1 Quantity (One EA), Box Assembly, Lower, #4 Port (Item No.

36 (5749546-001), Figure 8-5 of 2.2)

2. REFERENCES:

2.1 Standard Items

2.2 S9248−AA−TMM−078 Rev 03, Operation and Maintenance Manual for Landing Craft, Air Cushion (LCAC) Lift System Fans and Ducting (LCAC-78)

2.3 248−6732495 Rev K, C/A 361D LCAC Mods to Lift Fan Brg Mt Support Structure

2.4 151−6908242 Rev A, C/A 361 LCAC Lift Fan FOD Screen Mods Incid to Bearing Support Structure Stiffening

2.5 835−6732738 Rev −, Lift Fan Bearing Foundation Engineering Data Package for LCAC AER−229

2.6 20407 Rev −, LCAC Hand Hold Assembly

2.7 151−5749279 Rev K, LCAC Screen, Webbing Lift Fan

2.8 234−5750025 Rev PC, LCAC Water Wash Installation Engine Systems

2.9 568−5749803 Rev AB, LCAC Hydraulic−Installation Bow Thruster

SHIP: ASSAULT CRAFT UNIT 5 (45411)

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2.10 248−5749546 Rev P, LCAC Volute Sub−Assemblies

2.11 248−5749562 Rev M, LCAC Bearing Mount Details

2.12 LCAC CRAFTALT−0361D Rev 01, Modifications to Lift Fan Bearing Mount Support Structure

3.1 Accomplish alignment checks for Total Indicated Runout (TIR) for the equipment listed in 1.3 and located in 1.2, in accordance with Paragraph 6−

5.7.3.1 of 2.2.

3.1.1 Submit one legible copy, in hard copy or approved transferrable media, of a report listing results of the requirements of 3.1 to the SUPERVISOR.

3.2 Accomplish removals, modifications and installations incidental to LCAC Craft Change Document−361 Rev 01, Modification to Lift Fan Bearing Support Structure, at the location listed in 1.2 in accordance with 2.3 through 2.6, using 2.2 and 2.7 through 2.12 for guidance.

3.2.1 Chip and grind surfaces flush and smooth in way of removals.

3.2.2 Template exact size, configuration, and location from existing Landing Craft conditions.

3.3 Accomplish the requirements of 009−12 of 2.1, including Table 4, Column C, Lines one through 7.

3.3.1 Accomplish nondestructive testing in accordance with Line 10.

3.4 piping.

Accomplish the requirements of 009−71 of 2.1, for new and disturbed

3.4.1 Test pressure shall be 95 PSIG, using clean fresh water, when the hydrostatic test option is selected for the waste water wash system.

3.4.2 Remove fluid upon completion of hydrostatic tests. Allowable residual fluid: None.

3.4.3 Submit one legible copy, in hard copy or approved transferrable media, of a report listing results of the requirements of 3.4 to the SUPERVISOR.

3.5 Accomplish alignment checks for Total Indicated Runout (TIR) for the equipment listed in 1.3 and located in 1.2 upon completion of repairs in 3.2, in accordance with Paragraph 6−5.7.3.1 of 2.2.

3.5.1 Submit one legible copy, in hard copy or approved transferrable

SHIP: ASSAULT CRAFT UNIT 5 (45411)

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International Traffic in Arms Regulation (ITAR). This information must not be transferred to a foreign person/entity without proper authorization of the U.S. Government. Violations may result in administrative, media, of a report listing results of the requirements of 3.5 to the SUPERVISOR.

(V)(G) "OPERATIONAL TEST"

3.6 Accomplish an operational test of each piping system disturbed by this Work Item, under normal system operating pressure.

3.6.1 Allowable leakage at new and disturbed joints: None.

3.6.2 Submit one legible copy, in hard copy or approved transferrable media, of a report listing results of the requirements of 3.6 to the SUPERVISOR.

3.7 Accomplish the requirements of 009−32 of 2.1 for new and disturbed

4. NOTES:

4.1 None.

5.

5.1

GOVERNMENT FURNISHED MATERIAL (GFM):

LLTM:

SSP: 1 of 4 ITEM NO: 248-11-004

EXPORT CONTROLLED DATA: This document contains technical information whose export is governed by U.S.

International Traffic in Arms Regulation (ITAR). This information must not be transferred to a foreign person/entity without proper authorization of the U.S. Government. Violations may result in administrative, SHIP: ASSAULT CRAFT UNIT 5 (ACU 45411) ITEM NO: 248-11-004

PCN: LC78

CMP: NONE

PLANNER: DENISTON, M

1.1 Title: Lift Fan Bearing; replace

1.2 Location of Work:

1.2.1 Machinery Deck, Frames 6-10, Starboard

1.2.2 Machinery Deck, Frames 6-10, Port

1.3 Identification:

1.3.1 Quantity (8 EA), Bearing, Ball, Part No. MRC124KS (Alternate:

Timken US Corp. Part No. V9124K8), Figure 8-6, Table 8-7, Index No.

17 of 2.2

1.3.2 Quantity (8 EA), Lift Fan Bearing Mount Assembly, Figure 8-5, Table 8-6, Index No. 55 of 2.2

2. REFERENCES:

2.1 Standard Items

2.2 S9248-AA-TMM-078 Rev 02, Operation and Maintenance Manual for Landing Craft, Air Cushion (LCAC) Lift System Fans and Ducting (LCAC 78)

2.3 248-5749540 Rev AH, LCAC Volute Final Assembly

2.4 248-5749562 Rev P, LCAC Bearing Mount Details

2.5 248-5750322 Rev J, LCAC Bearing, Ball Lift System

2.6 7614-947941 Rev A, Process Specification for Structural Shimming Compounds

3. REQUIREMENTS:

3.1 Remove existing equipment listed in 1.3 and located in 1.2 in accordance with 2.2 through 2.5. Retain serviceable parts for reuse.

3.1.1 Matchmark shim spacers and fasteners and retain for reuse.

3.1.1.1 Accomplish the requirements of 009-84 of 2.1.

3.1.2 Clean all parts exposed by disassembly and removals using solvent conforming to MIL-PRF-680 or equal, in accordance with Paragraph 6-5.8.2.1 of 2.2.

3.1.3 Accomplish a visual inspection of each part exposed by

disassembly and removals for cracks, pitting, nicks, scratches, corrosion, galling, spalling, damaged threads and other defects in accordance with Paragraph 6-5.8.2.2 of 2.2.

Report: Parts Inspection Date: + 3

3.1.3.1 Submit one legible copy, in hard copy or approved

transferrable media, of a report listing results of the requirements of 3.1.3 to the SUPERVISOR.

SSP: 2 of 4 ITEM NO: 248-11-004

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3.1.4 Accomplish a visual inspection of each bearing liner listed in

1.3.2 and located in 1.2 for wear, scratches, nicks and other defects.

Report: Bearing Liner Inspection Date: + 3

3.1.4.1 Submit one legible copy, in hard copy or approved

transferrable media, of a report listing inspection results of

3.1.4 to the SUPERVISOR.

3.2 Install new the equipment listed in 1.3.1 and located in 1.2, using serviceable parts retained in 3.1 and 3.1.1, in accordance with 2.2 through 2.5.

3.2.1 Remove existing, fit, and install new the following parts:

TOTAL

QUANTITY

REQUIRED

NAME

OF PART

INDEX

NO.

REF.

NO.

FIGURE

NO.

PART

32 EA

4.2)

Bolt, Machine 56 2.2 8-5 NAS501-8-20A (See

32 EA Washer 57 2.2 8-5 AN960C816

32 EA Nut, Self-locking 58 2.2 8-5 MS21044C8

8 EA Shim 59 2.2 8-5 5749545-205

8 EA Check Seal, Plain 4 2.2 8-6 RS0140-340

8 AY Rub Ring Assy 5 2.2 8-6 5750173-007

64 EA Bolt, Machine 6 2.2 8-6 NAS501-6-46A

64 EA Washer, Flat 7 2.2 8-6 AN960C616

64 EA Nut, Self-locking 8 2.2 8-6 MS21044C6

8 EA O-Ring 11 2.2 8-6 2-171N674-70

8 EA Fitting, Grease 13 2.2 8-6 MS15720-1

24 EA Pin, Straight 15 2.2 8-6 MS16555-41

8 EA Bearing 17 2.2 8-6 MRC124KS

8 EA O-Ring 21 2.2 8-6 2-171N674-70

8 EA Gasket 24 2.2 8-6 5749545-287

16 AY Rub Ring Assy 26 2.2 8-6 5750173-019

64 EA Bolt, Machine 27 2.2 8-6 NAS501-3H6A

64 EA Washer, Flat 28 2.2 8-6 AN960C10L

6 EA Check Seal, Plain 29 2.2 8-6 RS0130-340

A/R Dynamold N/A 2.4 N/A Metalset A4 or equal

3.2.2 Remove existing, fit, and install new the following parts provided as Government Furnished Material (GFM) and listed in 5.1:

SSP: 3 of 4 ITEM NO: 248-11-004

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QUANTITY NAME INDEX REF. FIGURE PART

REQUIRED OF PART NO. NO. NO. NO.

8 EA Isomag Seal 9 2.2 8-6 5375MSR6750

8 EA Liner, Bearing 15A 2.2 8-6 5749562-005

8 EA Seal 23 2.2 8-6 4441MFLR5750

3.2.3 Accomplish the requirements of 009-84 of 2.1.

3.2.4 Apply grease conforming to MIL-PRF-81322 to each new bearing and pillow block in accordance with General Note 39 of 2.3.

3.2.5 Apply Dynamold Metalset A4, or equal in accordance with Paragraph 6-5.3.3 of 2.2, using 2.6 as guidance.

3.2.5.1 Apply Pro-Seal 870, or equal in accordance with

Paragraph 6-5 of 2.2.

3.3 Plug weld existing bolting holes for the equipment listed in 1.3.2 used for anchoring the pillow block to the U-channel foundation to facilitate installation. Layout and drill new anchoring holes during installation after all final alignments are accomplished, in accordance with Paragraph 6-5.8.2.3.3 of 2.2.

(V)(G) "SPOT-FACE"

3.3.1 Spot-face the underside of the U-channel to ensure full contact of the washer and nut in accordance with Paragraph 6-

5.8.2.3.3 of 2.2.

3.3.2 Accomplish the requirements of 009-12 of 2.1, including Table 4, Column C, Lines One through 7.

(V)(G) "OPERATIONAL TEST"

3.4 Accomplish an operational test of the lift system fan and ducting assembly disturbed by this Work Item in accordance with 2.2.

Report: Test Results Date: + 3

3.4.1 Submit one legible copy, in hard copy or approved

of 3.4 to the SUPERVISOR.

4. NOTES:

4.1 Work in this item interfaces with Work Items 248-11-001, Starboard Lift Fan Blade Impeller Assembly Repair; accomplish and 248-12-001, Port Lift Fan Blade Impeller Assembly Repair; accomplish.

4.2 Longer bolts for Index No. 56 of 3.2.1, may be required to achieve proper torque. Acceptable bolts include: EWB0420D-10–30, NAS501-8-22A, NAS501-6–16A, NAS501-6–12A, NAS501-6–11A and NAS501-6–10A.

SSP: 4 of 4 ITEM NO: 248-11-004

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International Traffic in Arms Regulation (ITAR). This information must not be transferred to a foreign person/entity without proper authorization of the U.S. Government. Violations may result in administrative, 3.

TOTAL

PIECE NO.

REF NO.

NATIONAL

STOCK NO.

Seal, Isomag 01-535-

8 EA 5375MSR6750 9 2.2 1019 3.2.2

5749562- 01-377- 8 EA Liner, Bearing 005 2.2 3729 3.2.2 Seal, 01-535-

8 EA 4441MFLR5750 23 2.2 1009 3.2.2

SSP: 1 of 4 ITEM NO: 248-11-005

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1.1 Title: Starboard Lift Fan Blade Impeller Assembly Repair; accomplish

1.2 Location of Work:

1.2.1 Main Deck, Frames 6-10, Starboard

1.3 Identification:

1.3.1 Quantity (2 EA), Shafts S1 and S3, Starboard (Figure 8-1 of 2.2)

1.3.2 Quantity (One EA), Bow Thruster Assembly, Starboard (Figure 8- 2 of 2.3)

1.3.3 Quantity (One EA), Manifold Assembly, Starboard (Index No.

One, Figure 8-5 of 2.4)

1.3.4 Quantity (2 EA), Volute Final Assembly, Starboard (Index No.

14, Figure 8-4 of 2.4)

1.3.4.1 Quantity (4 EA), Bellmouth Air Inlet Subassembly

(Figure 3-4 of 2.4)

1.3.4.2 Quantity (2 EA), Lift Fan Blade Impeller Assembly

(Index No. 54, Figure 8-5 of 2.4)

2. REFERENCES:

2.1 Standard Items

2.2 S9240-AA-TMM-078 Rev 02, Operation and Maintenance Manual for Landing Craft, Air Cushion (LCAC) Transmission System (LCAC 78)

2.3 S9568-AL-TMM-078 Rev 01, Operation and Maintenance Manual for Landing Craft, Air Cushion (LCAC) Bow Thruster Assembly (LCAC 78)

2.4 S9248-AA-TMM-078 Rev 02, Operation and Maintenance Manual for (SLEP) Landing Craft, Air Cushion (LCAC) Lift System Fans and Ducting (LCAC 78)

2.5 248-5749540 Rev AH, LCAC Volute Final Assembly

2.6 611-8677590 Rev -, Bow Thruster Assembly Lift Sling

2.7 248-5749539 Rev L, LCAC Lift System Installation

2.8 248-5749550 Rev L, LCAC Impeller Assy

2.9 248-5749552 Rev Q, LCAC Blade Assy - Impeller Lift Fan 63" Dia

2.10 248-5749551 Rev D, LCAC Back Plate - Impeller Lift Fan 63" Dia.

2.11 248-8430497 Rev -, CCD 581 Rev 00 LCAC Lift Fan Blade Foam Fill Procedure

2.12 7614-947941 Rev A, Process Specification for Structural Shimming Compound.

EXPORT CONTROLLED DATA: This document

SSP: 2 of 4 ITEM NO: 248-11-005

EXPORT CONTROLLED DATA: This document contains technical information whose export is governed by U.S.

International Traffic in Arms Regulation (ITAR). This information must not be transferred to a foreign person/entity without proper authorization of the U.S. Government. Violations may result in administrative, coupling deflections for the shafting listed in 1.3.1 and located in 1.2, in accordance with Paragraphs 6-6.5.8 and 7-4.5.3 of 2.2.

3.2 Remove the equipment listed in 1.3.2 and located in 1.2 in accordance with Paragraphs 6-5.3 and 6-5.4 of 2.4, using 2.3, Figure 6-11 of 2.4, 2.5 and 2.6 as guidance.

3.3 Weld fill and grind flush (257) bell mouth bolt holes and match drill bell mouth upon installation.

3.3.1 Accomplish the requirements of 009-12 of 2.1, including Table 4, Column C, Lines one thru 7.

3.4 Remove the equipment listed in 1.3.1 and 1.3.3 and located in 1.2 in accordance with Paragraph 6-5.6.1 of 2.4, using 2.6 and 2.7 as guidance.

3.4.1 Match-mark shafting laminated shim spacers and fasteners and retain for reuse.

3.4.2 Accomplish a visual inspection of each Lift Fan Blade Impeller Assembly for cracks, wear, burrs and other defects, using 2.4, and

2.7 through 2.10 as guidance.

3.4.2.1 Submit one legible copy, in hard copy or approved

requirements of 3.3.2 to the SUPERVISOR.

3.5 Remove existing and install new lift fan blades from each Impeller Assembly listed in 1.3.3 in accordance with Figure 8-7 of 2.4, using 2.5 through 2.11 as guidance.

3.5.1 Install Government Furnished Material (GFM) provided in 5.1.1 and 5.1.2.

3.5.2 Remove existing, fit, and install new the following parts:

TOTAL

REQUIRED OF PART NO. NO. NO. NO.

364 EA Bolt, Machine 2 2.4 8-7 NAS1004-7A

728 EA Washer 3 2.4 8-7 AN960C416

364 EA Nut, Self Lock 4 2.4 8-7 MS21044C4

364 EA Bolt, Machine 6 2.4 8-7 NAS1004-7A

728 EA Washer 7 2.4 8-7 AN960C416

364 EA Nut, Self Lock 8 2.4 8-7 MS21044C4

364 EA Bolt, Machine 9 2.4 8-7 NAS1004-15A

364 EA Washer 10 2.4 8-7 AN960C416

364 EA Nut, Self Lock 11 2.4 8-7 MS21044C4

3.5.3 Turn over each impeller assembly to the SUPERVISOR for

balancing.

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3.6 Install the equipment listed in 1.3.1 and 1.3.3 and located in 1.2 and provided as Government Furnished Material (GFM) in 5.1.3 after balancing required in 3.4.3, in accordance with Paragraph 6-5.6.3 of using 2.7 and 2.8 as guidance.

3.6.1 Fit and install new the following parts in accordance with Figure 8-5 of 2.4:

TOTAL

16 EA Bolt, Machine 56 2.4 8-5 NAS501-8-20A

16 EA Washer 57 2.4 8-5 AN960C816

16 EA Nut, Self Lock 58 2.4 8-5 MS21044C8

4 EA Shim 59 2.4 8-5 5749545-205

A/R Dynamold N/A 2.4 N/A MS-26 or equal

3.6.2 Apply Dynamold, MS-26 or equal in accordance with Paragraph 6-

5.6.3 of 2.4, using 2.12 as guidance.

3.5.2.1 Apply Pro-Seal 870, or equal in accordance with

Paragraph 6-5 of 2.4.

3.7 Install the equipment listed in 1.3.2 and removed in 3.2 in accordance with Paragraphs 6-5.3 and 6-5.4 of 2.4, using 2.3, Figure 6-11 of 2.4, 2.5 and 2.6 as guidance.

3.7.1 Align, locate and match drill bell mouth subassemblies

listed in 1.3.4 located in 1.2 using 2.5 as guidance.

3.7.2 Fit, and install new the following parts in accordance with Figure 8-5 of 2.4:

TOTAL

QUANTITY NAME INDEX REF. FIGURE PART

REQUIRED OF PART NO. NO. NO. NO.

190 EA Bolt, Machine 2 2.4 8-5 NAS501-6-10A

190 EA Washer 3 2.4 8-5 AN960C616

190 EA Nut, Self-lkg 4 2.4 8-5 MS21044C6

4 EA Bolt, Machine 6 2.4 8-5 NAS501-6-13A

4 EA Washer 7 2.4 8-5 AN960C616

4 EA Nut, Self-lkg 8 2.4 8-5 MS21044C6

4 EA Bolt, Machine 10 2.4 8-5 NAS501-6-13A

4 EA Washer 11 2.4 8-5 AN960C616

4 EA Nut, Self-lkg 12 2.4 8-5 MS21044C6

3.7.3 Apply Pro-Seal 870, or equal in accordance with Paragraph 6-5 of 2.4.

SSP: 4 of 4 ITEM NO: 248-11-005

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International Traffic in Arms Regulation (ITAR). This information must not be transferred to a foreign person/entity without proper authorization of the U.S. Government. Violations may result in administrative, (V)(G) "ALIGNMMENT AND BALANCING"

3.8 Align and balance each Lift Fan Blade Impeller Assembly listed in

1.3.3 and 1.3.4 and located in 1.2 in accordance with Chapter 6 of 2.4.

Accomplish shaft alignment verification in accordance with Paragraphs 6- 6.5.8, 7-4.5.3 and Table 6-7 of 2.2.

Report: ALIGN AND BALANCE RESULTS SITUATIONAL + 3

3.8.1 Submit one legible copy, in hard copy or approved

requirements of 3.7 and 3.7.1 to the SUPERVISOR.

3.9 Accomplish the requirements of 009-32 of 2.1 for new and disturbed surfaces.

4. NOTES:

4.1 Analyzer and associated components required to accomplish dynamic balancing in 3.7 are available from the SUPERVISOR.

4.2 Work in this item interfaces with Work Items 243-11-001, Shafting;

preserve, 248-11-004, Lift Fan Bearing; replace and 248-11-006, Lift Fan Shaft Journal and Thread Repair; accomplish.

4.3 Installation hardware listed in 3.5.1 is provided in Work Item 248- 11-004, Lift Fan Bearing; replace.

4.4 Alignment checks for (TIR) required in 3.1 and removal and installation of the equipment listed in 1.3.1 are accomplished on Work Item 243-11-001, Shafting; remove, turnover and install.

4.5 Longer bolts, for Index No. 56 of 3.5.1, may be required to achieve

NATIONAL

Blade, Impeller, 5749552- 01-512- 14 SE Foam Filled 1UCF 2.9 7290 3.4.1 Blade, Impeller, 5749552- 01-512- 14 SE Foam Filled 2UCF 2.9 6291 3.4.1 Impeller 5749550- 01-239- 2 EA Assembly 001 2.9 3944 3.5

SSP: 1 of 2 ITEM NO: 248-11-006

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International Traffic in Arms Regulation (ITAR). This information must not be transferred to a foreign person/entity without proper authorization of the U.S. Government. Violations may result in administrative, SHIP: ASSAULT CRAFT UNIT 5 (ACU ITEM NO: 248-11-006

1.1 Title: Lift Fan Shaft Journal and Thread Repair; accomplish

1.2 Location of Work:

1.2.1 Main Deck, Frames 6-10, Port

1.2.2 Main Deck, Frames 6-10, Starboard

1.3 Identification:

1.3.1 Quantity (8 EA), Shaft, Lift Fan (5749555-015, Find No. 7 of 2.2)

2. REFERENCES:

2.1 Standard Items

2.2 248-5749555 Rev H, LCAC Shaft Assembly

2.3 LCAC Craft Change Document-391 Rev 01, Lift Fan Shaft Journal and Thread Repair

2.4 S9248-AA-TMM-078 Rev 03, Operation and Maintenance Manual for Landing Craft, Air Cushion (LCAC) Lift System Fans and Ducting (LCAC 78)

3. REQUIREMENTS:

3.1 Accomplish the requirements of 2.3 for the equipment listed in 1.3 and located in 1.2, in accordance with 2.2, using 2.4 as guidance.

3.1.1 Include sizes, clearances, fits, and finishes for wearing parts, bearing surfaces, thrust and journal bearings, seal and packing areas, and physical conditions of parts not specified for renewal.

3.1.2 Accomplish a visual inspection of the mounting hardware (Index Nos. 39, 40 and 41, Figure 8-7 of 2.4) for integrity, missing, deteriorated, pitted, damaged or no longer serviceable for continued use.

3.1.2.1 Submit one legible copy, in hard copy or approved

transferrable media, of a report listing the results of 3.1.2 to the SUPERVISOR.

3.2 Weld build up damaged areas of each shaft listed 1.3 in accordance with 1.a.(2) of 2.3.

3.2.1 Accomplish the requirements of 009-12 of 2.1, including Table One, Column F, Lines One through 10.

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3.2.1.1 Accomplish nondestructive testing in accordance with

Line 13.

3.2.2 Accomplish the requirements of 009-09 of 2.1, for process control procedure of welding process.

3.3 Accomplish the requirements of 009-105 of 2.1, for application of High Velocity Oxygen Flame (HVOF) thermal spray coating of tungsten carbide to the equipment listed in 1.3.

3.3.1 Accomplish the requirements of 009-09 of 2.1, for process control procedure of NAVSEA approved process.

4. NOTES:

4.1 Known source for HVOF thermal spray:

Bender CCP

2150 East 37th St

Vernon, CA 90058-1417

Phone: (323) 232-2371

Fax: (323) 232-1790

E-Mail: info@benderccp.com

Website: www.benderccp.com

POC: Mike Potter

Phone: (707) 590-0067

4.2 Work in this item interfaces with Work Items 248-11-004, Lift Fan Bearing; replace, 248-11-005, Starboard Lift Fan Blade Impeller Assembly Repair; accomplish and 248-12-005, Port Lift Fan Blade Impeller Assembly Repair; accomplish.

5. GOVERNMENT FURNISHED MATERIAL (GFM):

mailto:info@benderccp.com http://www.benderccp.com/

SSP: 1 of 4 ITEM NO: 248-12-005

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1.1 Title: Port Lift Fan Blade Impeller Assembly Repair; accomplish

1.2 Location of Work:

1.2.1 Main Deck, Frames 6-10, Port

1.3 Identification:

1.3.1 Quantity (2 EA), Shafts S2 and S4, Port (Figure 8-1 of 2.2)

1.3.2 Quantity (One EA), Bow Thruster Assembly, Port (Figure 8- 2 of 2.3)

1.3.3 Quantity (One EA), Manifold Assembly, Port (Index No. One, Figure 8-5 of 2.4)

1.3.4 Quantity (2 EA), Volute Final Assembly, Port (Index No. 14, Figure 8-4 of 2.4)

1.3.4.1 Quantity (4 EA), Bellmouth Air Inlet Subassembly Port (Figure 3-4 of 2.4)

1.3.4.2 Quantity (2 EA), Lift Fan Blade Impeller Assembly Port (Index No. 54, Figure 8-5 of 2.4)

2. REFERENCES:

2.1 Standard Items

2.2 S9240-AA-TMM-078 Rev 02, Operation and Maintenance Manual for Landing Craft, Air Cushion (LCAC) Transmission System (LCAC 78)

2.3 S9568-AL-TMM-078 Rev 01, Operation and Maintenance Manual for Landing Craft, Air Cushion (LCAC) Bow Thruster Assembly (LCAC 78)

2.4 S9248-AA-TMM-078 Rev 02, Operation and Maintenance Manual for (SLEP) Landing Craft, Air Cushion (LCAC) Lift System Fans and Ducting (LCAC 78)

2.5 248-5749540 Rev AH, LCAC Volute Final Assembly

2.6 611-8677590 Rev -, Bow Thruster Assembly Lift Sling

2.7 248-5749539 Rev L, LCAC Lift System Installation

2.8 248-5749550 Rev L, LCAC Impeller Assy

2.9 248-5749552 Rev Q, LCAC Blade Assy - Impeller Lift Fan 63" Dia

2.10 248-5749551 Rev D, LCAC Back Plate - Impeller Lift Fan 63" Dia.

2.11 248-8430497 Rev -, CCD 581 Rev 00 LCAC Lift Fan Blade Foam Fill Procedure

2.12 7614-947941 Rev A, Process Specification for Structural Shimming Compound.

EXPORT CONTROLLED DATA: This document

SSP: 2 of 5 ITEM NO: 248-12-005

EXPORT CONTROLLED DATA: This document contains technical information whose export is governed by U.S.

International Traffic in Arms Regulation (ITAR). This information must not be transferred to a foreign person/entity without proper authorization of the U.S. Government. Violations may result in administrative, coupling deflections for the shafting listed in 1.3.1 and located in 1.2, in accordance with Paragraphs 6-6.5.8 and 7-4.5.3 of 2.2.

3.2 Remove the equipment listed in 1.3.2 and located in 1.2 in accordance with Paragraphs 6-5.3 and 6-5.4 of 2.4, using 2.3, Figure 6-11 of 2.4, 2.5 and 2.6 as guidance.

3.3 Weld fill and grind flush (257) bell mouth bolt holes and match drill bell mouth upon installation.

3.3.1 Accomplish the requirements of 009-12 of 2.1, including Table 4, Column C, Lines one thru 7.

3.4 Remove the equipment listed in 1.3.1 and 1.3.3 and located in 1.2 in accordance with Paragraph 6-5.6.1 of 2.4, using 2.6 and 2.7 as guidance.

3.4.1 Match-mark shafting laminated shim spacers and fasteners and retain for reuse.

3.4.2 Accomplish a visual inspection of each Lift Fan Blade Impeller Assembly for cracks, wear, burrs and other defects, using 2.4, and

2.7 through 2.10 as guidance.

3.4.2.1 Submit one legible copy, in hard copy or approved

requirements of 3.3.2 to the SUPERVISOR.

3.5 Remove existing and install new lift fan blades from each Impeller Assembly listed in 1.3.3 in accordance with Figure 8-7 of 2.4, using 2.5 through 2.11 as guidance.

3.5.1 Install Government Furnished Material (GFM) provided in 5.1.1 and 5.1.2.

3.5.2 Remove existing, fit, and install new the following parts:

TOTAL

364 EA Bolt, Machine 2 2.4 8-7 NAS1004-7A

728 EA Washer 3 2.4 8-7 AN960C416

364 EA Nut, Self Lock 4 2.4 8-7 MS21044C4

364 EA Bolt, Machine 6 2.4 8-7 NAS1004-7A

728 EA Washer 7 2.4 8-7 AN960C416

364 EA Nut, Self Lock 8 2.4 8-7 MS21044C4

364 EA Bolt, Machine 9 2.4 8-7 NAS1004-15A

364 EA Washer 10 2.4 8-7 AN960C416

364 EA Nut, Self Lock 11 2.4 8-7 MS21044C4

3.5.3 Turn over each impeller assembly to the SUPERVISOR for

balancing.

SSP: 3 of 5 ITEM NO: 248-12-005

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3.6 Install the equipment listed in 1.3.1 and 1.3.3 and located in 1.2 and provided as Government Furnished Material (GFM) in 5.1.3 after balancing required in 3.4.3, in accordance with Paragraph 6-5.6.3 of using 2.7 and 2.8 as guidance.

3.6.1 Fit and install new the following parts in accordance with Figure 8-5 of 2.4:

TOTAL

16 EA Bolt, Machine 56 2.4 8-5 NAS501-8-20A

16 EA Washer 57 2.4 8-5 AN960C816

16 EA Nut, Self Lock 58 2.4 8-5 MS21044C8

4 EA Shim 59 2.4 8-5 5749545-205

A/R Dynamold N/A 2.4 N/A MS-26 or equal

3.6.2 Apply Dynamold, MS-26 or equal in accordance with Paragraph 6-

5.6.3 of 2.4, using 2.12 as guidance.

3.5.2.1 Apply Pro-Seal 870, or equal in accordance with

Paragraph 6-5 of 2.4.

3.7 Install the equipment listed in 1.3.2 and removed in 3.2 in accordance with Paragraphs 6-5.3 and 6-5.4 of 2.4, using 2.3, Figure 6-11 of 2.4, 2.5 and 2.6 as guidance.

3.7.1 Align, locate and match drill bellmouth subassemblies listed in 1.3.4 located in 1.2 using 2.5 as guidance.

3.7.2 Fit, and install new the following parts in accordance with Figure 8-5 of 2.4:

TOTAL

QUANTITY NAME INDEX REF. FIGURE PART

REQUIRED OF PART NO. NO. NO. NO.

190 EA Bolt, Machine 2 2.4 8-5 NAS501-6-10A

190 EA Washer 3 2.4 8-5 AN960C616

190 EA Nut, Self-lkg 4 2.4 8-5 MS21044C6

4 EA Bolt, Machine 6 2.4 8-5 NAS501-6-13A

4 EA Washer 7 2.4 8-5 AN960C616

4 EA Nut, Self-lkg 8 2.4 8-5 MS21044C6

4 EA Bolt, Machine 10 2.4 8-5 NAS501-6-13A

4 EA Washer 11 2.4 8-5 AN960C616

4 EA Nut, Self-lkg 12 2.4 8-5 MS21044C6

3.7.3 Apply Pro-Seal 870, or equal in accordance with Paragraph 6-5 of 2.4.

SSP: 4 of 5 ITEM NO: 248-12-005

EXPORT CONTROLLED DATA: This document contains technical information whose export is governed by U.S.

International Traffic in Arms Regulation (ITAR). This information must not be transferred to a foreign person/entity without proper authorization of the U.S. Government. Violations may result in administrative, (V)(G) "ALIGNMMENT AND BALANCING"

3.8 Align and balance each Lift Fan Blade Impeller Assembly listed in

1.3.3 and 1.3.4 and located in 1.2 in accordance with Chapter 6 of 2.4.

Accomplish shaft alignment verification in accordance with Paragraphs 6- 6.5.8, 7-4.5.3 and Table 6-7 of 2.2.

Report: ALIGN AND BALANCE RESULTS SITUATIONAL + 3

3.8.1 Submit one legible copy, in hard copy or approved

requirements of 3.7 and 3.7.1 to the SUPERVISOR.

3.9 Accomplish the requirements of 009-32 of 2.1 for new and disturbed surfaces.

4. NOTES:

4.1 Analyzer and associated components required to accomplish dynamic balancing in 3.7 are available from the SUPERVISOR.

4.2 Work in this item interfaces with Work Items 243-11-001, Shafting;

preserve, 248-11-004, Lift Fan Bearing; replace and 248-11-006, Lift Fan Shaft Journal and Thread Repair; accomplish.

4.3 Installation hardware listed in 3.5.1 is provided in Work Item 248- 11-004, Lift Fan Bearing; replace.

4.4 Alignment checks for (TIR) required in 3.1 and removal and installation of the equipment listed in 1.3.1 are accomplished on Work Item 243-11-001, Shafting; remove, turnover and install.

4.5 Longer bolts, for Index No. 56 of 3.5.1, may be required to achieve

NATIONAL

Blade, Impeller, 5749552- 01-512- 14 SE Foam Filled 1UCF 2.9 7290 3.4.1 Blade, Impeller, 5749552- 01-512- 14 SE Foam Filled 2UCF 2.9 6291 3.4.1 Impeller 5749550- 01-239- 2 EA Assembly 001 2.9 3944 3.5