Enclosure 67 - TM-55-1905-223-24-18-1 - Basic Craft - Part I.pdf

TM 55-1905-223-24-18-1

TECHNICAL MANUAL

UNIT, INTERMEDIATE DIRECT

SUPPORT

AND INTERMEDIATE

SUPPORT

GENERAL

MAINTENANCE INSTRUCTIONS

LANDING CRAFT, UTILITY

(LCU)

N S N 1 9 0 5 - 0 1 - 1 5 4 - 1 1 9 1

BASIC CRAFT

(PART I)

Distribution Statement A: Approved for public release; distribution is unlimited

HEADQUARTERS, DEPARTMENT OF THE ARMY

J A N U A R Y 1 9 8 9

WARNING

MODIFICATION HAZARD

Unauthorized modifications, alterations or installations of or to this equipment are prohibited and are in violation of AR 750-10. Any such unauthorized modifications, alterations or installations could result in death, injury or damage to the equipment.

HIGH PRESSURE HYDRAULIC SYSTEM HAZARDS

Hydraulic systems can cause serious injuries if high pressure lines or equipment fail.

Never work on hydraulic systems or equipment unless there is another person nearby who is familiar with the operation and hazards of the equipment, and who can give first aid. A second person should stand by controls to turn off hydraulic pumps in an emergency.

MOVING MACHINERY HAZARDS

Be very careful when operating or working near moving machinery.

Running engines, rotating shafts, and other moving machinery parts could cause personal injury or death.

ELECTRICAL HAZARDS

Do not be misled by the term “low voltage.” Potentials as low as 50 volts may cause death under adverse conditions. Be careful not to contact 115-Vac input connections when installing operating equipment.

Whenever the nature of the operation permits, keep one hand away from the equipment to reduce the hazard of current flowing through the body.

FLAMMABLE LIQUID AND COMBUSTIBLE VAPOR HAZARDS

Gasoline, fuel oil, lubricating oil, grease, paint, paint thinner, cleaning solvents and other combustible liquids present a serious fire hazard. Always store combustible liquids in approved containers and in their designated compartments or deck storage locations. Ensure exhaust and ventilation fans are operating while using cleaning solvents or paint products. Never store or charge batteries in a confined space without ventilation or near operating electrical equipment.

When refueling and defueling the vessel, ensure appropriate signs are posted in visible locations and warnings are announced over the vessel’s public address system. Smoking, welding and any operation which involves open flames must be prohibited throughout the vessel.

CAUSTIC AND CORROSIVE CHEMICAL HAZARDS

Battery acid and water purification chemicals such as bromine and chlorine can cause serious burns to eyes or exposed areas of skin. Always wear eye protection and protective clothing when working with caustic and corrosive chemicals. If chemicals accidently contact skin or eyes, immediately flush with large quantities of water and seek medical attention.

COMPRESSED AIR HAZARDS

High pressure compressed air tanks, piping systems and air operated devices possess potential for serious injury to eyes and exposed areas of skin due to escaping air pressure.

ELECTROMAGNETIC RADIATION HAZARDS

Electromagnetic radiation from the searchlight, radar, and radio antennas has the potential for serious radiation burns. Do not stand in the path of radiation emission.

FIRE SUPPRESSANT HAZARDS

Fire suppressant chemicals displace oxygen and can cause suffocation. Immediately evacuate areas where they will be used.

For Artificial Respiration, refer to FM 21-11.

a

C 6

CHANGE HEADQUARTERS

DEPARTMENT OF THE ARMY

NO. 6 WASHINGTON, D.C., 01 July 2009

UNIT, INTERMEDIATE DIRECT SUPPORT AND

INTERMEDIATE GENERAL SUPPORT

MAINTENANCE INSTRUCTIONS

LANDING CRAFT, UTILITY (LCU)

BASIC CRAFT (PART 1)

NSN 1905-01-154-1191

DISTRIBUTION STATEMENT A: Approved for public release, distribution is unlimited.

TM 55-1905-223-24-18-1, 17 January 1989, is changed as follows:

1. Remove and insert pages as indicated below. New or changed text material is indicated by a vertical bar in the margin. An illustration change is indicated by a miniature pointing hand.

Remove pages

A through D

Insert pages

A through D i and ii i and ii 1-1 and 1-2 1-1 and 1-2 1-5 through 1-8 1-5 through 1-8 1-11 through 1-14 1-11 through 1-14 1-19 and 1-20 1-19 and 1-20 1-39 through 1-42 1-39 through 1-42 1-51 through 1-62 1-51 and 1-51.1 . . . . (1-51.2 blank)/1-52 . . . . 1-53 through 1-56 . . . . 1-56.1 through 1-56.6 . . . . 1-57 through 1-60 . . . . 1-61 and 1-61.1 . . . . 1-61.2 through 1-61.5 . . . . 1-61.6 and 1-62 1-63 and 1-64 1-63 and 1-64 2-1 and 2-2 2-1 and 2-2 2-7 through 2-10 2-7 through 2-10 2-43 through 2-50 2-43 through 2-50 2-51 and 2-52 2-51 and 2-51.1 . . . . 2-51.2 and 2-52 2-53 and 2-54 (2-53 blank)/2-54 2-109 and 2-110 2-109 and 2-110 2-155 and 2-156 2-155 and 2-155.1 . . . . 2-155.2 and 2-156 2-171 and 2-172 2-171 and 2-172 2-183 and 2-184 2-183 and 2-184 2-197 and 2-198 2-197 and 2-198

TECHNICAL MANUAL

C 6

Remove pages Insert pages

2-245 and 2-246 2-245 and 2-246

2-493 through 2-500 2-493 through 2-499/(2-500 blank)

2-563 through 2-572 2-563 through 2-566

. . . . 2-566.1/(2-566.2 blank)

. . . . 2-567 through 2-572

. . . . 2-572.1 through 2-572.7/(2-572.8 blank)

2-609 and 2-610 2-609 and 2-610 2-621 and 2-622 2-621 and 2-622 2-643 and 2-644 2-643 and 2-643.1 . . . . 2-643.2 through 2-643.5 . . . . (2-643.6 blank)/2-644 . . . . (2-648.1 blank)/2-648.2 2-661 and 2-662 2-661 and 2-661.1 . . . . 2-661.2 and 2-661.3 . . . . (2-661.4 blank)/2-662 2-665 and 2-666 2-665 and 2-665.1 . . . . (2-665.2 blank)/2-666 2-669 and 2-670 2-669 and 2-669.1 . . . . 2-669.2 and 2-669.3 . . . . (2-669.4 blank)/2-670 2-673 through 2-686 2-673 through 2-686 . . . . 2-696.1 through 2-696.4 2-697 through 2-702 2-697 through 2-702 2-827 and 2-828 2-827 and 2-828 2-857 and 2-858 2-857 and 2-858 2-891 through 2-894 2-891 through 2-894 2028's 2028's

2. Retain this sheet in front of manual for reference purposes.

DISTRIBUTION:

To be distributed in accordance with IDN 254813, requirements for TM 55-1905-223-24-18-1.

By Order of the Secretary of the Army:

GEORGE W. CASEY, JR.

General, United States Army

Chief of Staff Official:

0807303

JOYCE E. MORROW

Administrative Assistant to the

Secretary of the Army

C 5

CHANGE HEADQUARTERS

NO. 5 WASHINGTON, D.C., 08 February 2008

UNIT, INTERMEDIATE DIRECT SUPPORT AND

INTERMEDIATE GENERAL SUPPORT

MAINTENANCE INSTRUCTIONS

DISTRIBUTION STATEMENT A: Approved for public release, distribution is unlimited.

TM 55-1905-223-24-18-1, 17 January 1989, is changed as follows:

1. Remove and insert pages as indicated below. New or changed text material is indicated by a vertical bar in the margin. An illustration change is indicated by a miniature pointing hand.

Remove pages

A and B

Insert pages

A through D i and ii i and ii 1-1 and 1-2 1-1 and 1-2 1-5 and 1-6 1-5 and 1-6 1-13 and 1-14 1-13 and 1-14 1-19 through 1-22 1-19 through 1-22 1-27 through 1-30 1-27 through 1-30 1-41 and 1-42 1-41 and 1-42 1-47 and 1-48 1-47 and 1-48 1-51 and 1-52 1-51 and 1-52 1-61 through 1-66 1-61 through 1-64 . . . . (1-65 blank)/1-66 2-1 through 2-8 2-1 through 2-8 2-105 and 2-106 2-105 and 2-106 2-111 through 2-114 2-111 through 2-114 2-129 and 2-130 2-129 and 2-130 2-205 through 2-222 2-205/(2-206 blank) 2-223 and 2-224 (2-223 blank)/2-224 2-227 and 2-228 2-227 and 2-228 2-281 and 2-282 2-281 and 2-282 2-415 through 2-418 2-415 through 2-418 2-441 and 2-442 2-441 and 2-442 2-731 through 2-734 2-731 through 2-734 2-743 and 2-744 2-743 and 2-744 2-747 and 2-748 2-747 and 2-748 2-763 through 2-790 2-763 through 2-782 . . . . 2-783/(2-784 blank) . . . . 2-785 through 2-790

Technical Manual

C 5

Remove pages Insert pages

2-793 and 2-794 2-793 and 2-794 2-813 and 2-814 2-813 and 2-814 2-821 and 2-822 2-821 and 2-822 2-825 and 2-826 2-825 and 2-826 . . . . 2-952.1 through 2-952.3/(2-952.4 blank) 2-1013 through 2-1018 2-1013 through 2-1018 2028's 2028's

To be distributed in accordance with IDN 254813, requirements for TM 55-1905-223-24-18-1.

By Order of the Secretary of the Army:

GEORGE W. CASEY, JR.

General, United States Army

Chief of Staff Official:

0801605

JOYCE E. MORROW

Administrative Assistant to the

C4

HEADQUARTERS

CHANGE DEPARTMENT OF THE ARMY

No. 4 WASHINGTON, D.C., 15 MAY 2002

Unit, Intermediate Direct Support and Intermediate General Support Maintenance Instructions

Approved for public release; Distribution is unlimited.

TM 55-1905-223-24-18-1, 17 January 1989 is changed as follows:

1. Remove and insert pages as indicated below. New or changed text material is indicated by a vertical bar in the margin. An illustration change is indicated by a miniature pointing hand.

Remove page Insert page

------- A and B i and ii i and ii 2-95 and 2-96 2-95 and 2-96

To be distributed in accordance with IDN 254813, requirements for TM 55-1905-223-24-18-1

By Order of the Secretary of the Army

ERIC K. SHINSEKI

General, United States Army

Chief of Staff Official:

JOEL B. HUDSON

Administrative Assistant to the

0201509

C 3

CHANGE

No. 3

HEADQUARTERS

DEPARTMENT OF THE ARMY

WASHINGTON, D.C., 09 NOVEMBER 1992

Unit, lntermediate Direct Support and Intermediate General Support Maintenance Instructions

LANDING CRAFT, UTILITY (LCU)

BASIC CRAFT (PART I)

NSN 1905-01-154-1191

Approved for public release; Distribution is unlimited

TM 55-1905-223-24-18-1,17 January 1989 is changed as follows:

1. Remove and insert pages as indicated below. New or changed text material is indicated by a vertical bar in the margin. An illustration change is indicated by a miniature pointing hand.

Remove pages lnsert pages

2-85 and 2-86 2-85and2-86 2-981 and 2-982 2-981 and 2-982

2. Retain this sheet in front of manual for reference purposes.

By Order of the Secretary of the Army:

GORDON R. SULLIVAN

General, United States Army

Chief of StaffOfficial:

MlLTON H. HAMILTON Administrative Assistant to the

Secretary of the Army 03022

DISTRIBUTlON:

To be distributed in accordance with DA Form 12-25-E, block no. 4813, requirements for

TM 55-1905-223-18-1.

TM 55-1 905-223-24-1 8-1

C2

CHANGE

NO. 2

HEADQUARTERS

DEPARTMENT OF THE ARMY

WASHINGTON, D.C., 22 May 1991

Unit, Intermediate Direct Support, and Intermediate General Support Maintenance Instructions

LANDING CRAFT, UTILITY (LCU)

BASIC CRAFT (PART I)

NSN 1905-01-154-1191

Approved for public release; distribution is unlimited

TM 55-1905-223-24-18-1, 17 January 1989 is changed as follows:

1. Remove and insert pages as indicated below. New or changed text material is indicated by a vertical bar in the margin. An illustration change is indicated by a miniature pointing hand.

Remove pages Insert pages

2-447 and 2-448

2-447and2-448 2-448.1 and 2-448.2

2. Retain this sheet in front of manual for reference purposes.

By Order of the Secretary of the Army:

CARL E. VUONO

General, United States Army

Chief of Staff

Official:

THOMAS F. SIKORA

Brigadier Genera/, United States Army The Adjutant General

To be distributed in accordance with DA Form 12-25E, (qty rqr block no. 4813).

C 1

CHANGE

NO. 1

HEADQUARTERS

DEPARTMENT OF THE ARMY

WASHINGTON, D.C., 30 July 1990

Unit, Intermediate Direct Support, and Intermediate General Support

Maintenance Instructions

LANDING CRAFT, UTILITY

(LCU) BASIC CRAFT (PART 1)

NSN 1905-01-154-1191

Approved for public release; distribution is unlimited.

TM 55-1905-223-24-18-1, 17 January 1989, is changed as follows:

1. Remove and insert pages as indicated below. New or changed text material is indicated by a vertical bar in the margin. An illustration change is indicated by a miniature pointing hand.

Remove pages Insert pages

2-201 and 2-202 2-231 and 2-232 2-245 through 2-248 2-251 and 2-252 2-255 and 2-256 2-265 and 2-266 2-269 through 2-276 2-279 through 2-282 2-287 through 2-294 2-299 and 2-300 2-309 and 2-310 2-321 and 2-322 2-327 through 2-330 2-335 and 2-336 2-341 through 2-348 2-351 through 2-360 2-365 and 2-366 2-385 and 2-386 2-395 and 2-396 2-399 and 2-400 2-409 through 2-412 2-415 and 2-416 2-419 and 2-420 2-423 and 2-424 2-427 through 2-430 2-433 and 2-434 2-437 and 2-438 2-443 through 2-452 2-501 and 2-502 2-507 through 2-510 2-513 through 2-518 2-521 through 2-540 2-545 through 2-552 2-555 and 2-556 2-559 and 2-560

2-201 and 2-202 2-231 and 2-232 2-245 through 2-248 2-251 and 2-252 2-255 and 2-256 2-265 and 2-266 2-269 through 2-276 2-279 through 2-282 2-287 through 2-294 2-299 and 2-300 2-309 and 2-310 2-321 and 2-322 2-327 through 2-330 2-335 and 2-336 2-341 through 2-348 2-351 through 2-360 2-365 and 2-366 2-385 and 2-386 2-395 and 2-396 2-399 and 2-400 2-409 through 2-412 2-415 and 2-416 2-419 and 2-420 2-423 and 2-424 2-427 through 2-430 2-433 and 2-434 2-437 and 2-438 2-443 through 2-452 2-501 and 2-502 2-507 through 2-510 2-513 through 2-518 2-521 through 2-540 2-545 through 2-552 2-555 and 2-556 2-559 and 2-560

Remove pages Insert pages

2-563 and 2-564 2-567 and 2-568 2-573 through 2-578 2-581 and 2-582 2-593 and 2-594 2-597 and 2-598 2-603 through 2-612 2-619 through 2-624 2-629 and 2-630 2-637 through 2-640 2-643 through 2-670 2-673 and 2-674 2-679 and 2-680 2-685 and 2-686 2-691 and 2-692 2-697 and 2-698 2-703 and 2-704 2-709 and 2-710 2-715 and 2-716 2-727 and 2-728 2-733 and 2-734 2-741 through 2-744 2-747 and 2-748 2-757 through 2-760 2-763 through 2-772 2-775 through 2-796 2-807 through 2-818 2-821 and 2-822 2-827 through 2-830 2-833 through 2-858 2-861 and 2-862 2-867 and 2-868 2-873 and 2-874 2-877 and 2-878 2-881 through 2-884 2-887 through 2-892 2-895 and 2-896 2-899 through 2-902 2-905 and 2-906 2-925 and 2-926 2-933 and 2-934 2-937 and 2-938 2-953 and 2-954 2-981 and 2-982

2-563 and 2-564 2-567 and 2-568 2-573 through 2-578 2-581 and 2-582 2-593 and 2-594 2-597 and 2-598 2-603 through 2-612 2-619 through 2-624 2-629 and 2-630 2-637 through 2-640 2-643 through 2-670 2-673 and 2-674 2-679 and 2-680 2-685 and 2-686 2-691 and 2-692 2-697 and 2-698 2-703 and 2-704 2-709 and 2-710 2-715 and 2-716 2-727 and 2-728 2-733 and 2-734 2-741 through 2-744 2-747 and 2-748 2-757 through 2-760 2-763 through 2-772 2-775 through 2-796 2-807 through 2-818 2-821 and 2-822 2-827 through 2-830 2-833 through 2-858 2-861 and 2-862 2-867 and 2-868 2-873 and 2-874 2-877 and 2-878 2-881 through 2-884 2-887 through 2-892 2-895 and 2-896 2-899 through 2-902 2-905 and 2-906 2-925 and 2-926 2-933 and 2-934 2-937 and 2-938 2-953 and 2-954 2-981 and 2-982

By Order of the Secretary of the Army:

CARL E. VUONO

General, United States Army

Chief of Staff Official:

WILLIAM J. MEEHAN, II

Brigadier General, United States Army

The Adjutant General

DISTRIBUTION:

To be distributed in accordance with DA Form 12-25A, Direct Support and General

Support Maintenance requirements for Landing Craft, Utility, LUC-1466, Type III.

* Zero in this column indicates an original page.

Change 6 A

INSERT LATEST CHANGED PAGES. DESTROY SUPERSEDED DATA.

LIST OF EFFECTIVE PAGES

NOTE: The portion of text affected by the changes is indicated by a vertical line in the outer margins of the page.

Changes to illustrations are indicated by miniature pointing hands. Changes to wiring diagrams are indicated by shaded areas.

Dates of issue for original and changed pages are:

Original 0 17 January 1989 Change 1 30 July 1990 Change 2 22 May 1991 Change 3 09 November 1992

Change 4 15 May 2002 Change 5 08 February 2008 Change 6 01 July 2009

TOTAL NUMBER OF PAGES IS 1184 CONSISTING OF THE FOLLOWING:

Page *Change No. No.

Page *Change No. No.

Cover Introduction/(blank) i ii 1-1 1-2 through 1-4 1-5 through 1-7 1-8 through 1-10 1-11 through 1-13 1-14 1-15 through 1-19 1-20 1-21 1-22 through 1-27 1-28 and 1-29 1-30 through 1-38 1-39 1-40 1-41 1-42 1-43 through 1-46 1-47 1-48 through 1-50 1-51 1-51.1/(1-51.2 blank) 1-52 through 1-56 1-56.1 through 1-56.6 1-57 through 1-61 1-61.1 through 1-61.6 1-62 1-63 1-64 (1-65 blank)/1-66 2-1 2-2 2-3 2-4

2-5 through 2-7 2-8 and 2-9 2-10 through 2-42 2-43 through 2-51 2-51.1 and 2-51.2 2-52 (2-53 blank)/2-54 2-55 through 2-85 2-86 2-87 through 2-94 2-95 2-96 through 2-104 2-105 and 2-106 2-107 through 2-109 2-110 2-111 2-112 and 2-113 2-114 through 2-128 2-129 2-130 through 2-154 2-155 2-155.1 and 2-155.2 2-156 2-157 through 2-170 2-171 and 2-172 2-173 through 2-183 2-184 2-185 through 2-196 2-197 2-198 through 2-201 2-202 2-203 and 2-204 2-205/(2-206 blank) 2-207 through 2-222 Deleted (2-223 blank)/2-224 2-225 and 2-226 2-227

B Change 6

Page *Change Page *Change No. No. No. No.

2-228 through 2-230 2-231 2-232 through 2-244 2-245 2-246 and 2-247 2-248 2-249 and 2-250 2-251 2-252 through 2-254 2-255 2-256 through 2-265 2-266 2-267 through 2-269 2-270 2-271 2-272 2-273 2-274 2-275 2-276 2-277 and 2-278 2-279 2-280 2-281 2-282 through 2-286 2-287 2-288 2-289 2-290 2-291 2-292 and 2-293 2-294 2-295 through 2-298 2-299 2-300 through 2-309 2-310 2-311 through 2-321 2-322 2-323 through 2-326 2-327 2-328 2-329 2-330 through 2-335 2-336 2-337 through 2-340 2-341 and 2-342 2-343 2-344 2-345 2-346 2-347 2-348 2-349 through 2-351 2-352

2-353 2-354 through 2-360 2-361 through 2-365 2-366 2-367 through 2-384 2-385 2-386 through 2-395 2-396 2-397 and 2-398 2-399 2-400 through 2-408 2-409 2-410 and 2-411 2-412 2-413 through 2-415 2-416 through 2-418 2-419 2-420 2-421 and 2-422 2-423 2-424 through 2-426 2-427 2-428 and 2-429 2-430 2-431 through 2-433 2-434 2-435 through 2-437 2-438 2-439 through 2-441 2-442 2-443 2-444 2-445 through 2-447 2-448 2-448.1 and 2-448.2 2-449 2-450 2-451 2-452 through 2-493 2-494 through 2-499/(2-500 blank) 2-501 and 2-502 2-503 through 2-506 2-507 2-508 2-509 2-510 through 2-512 2-513 2-514 and 2-515 2-516 2-517 2-518 2-519 and 2-520 2-521 2-522

Change 6 C

Page *Change Page *Change No. No. No. No.

2-523 2-524 and 2-525 2-526 2-527 2-528 2-529 2-530 2-531 2-532 2-533 2-534 2-535 2-536 2-537 2-538 and 2-539 2-540 through 2-544 2-545 2-546 2-547 2-548 2-549 through 2-551 2-552 through 2-555 2-556 2-557 and 2-558 2-559 2-560 through 2-562 2-563 through 2-566 2-566.1/(2-566.2 blank) 2-567 through 2-572 2-572.1 through 2-572.7/(2-572.8 blank) 2-573 2-574 and 2-575 2-576 and 2-577 2-578 through 2-581 2-582 2-583 through 2-592 2-593 and 2-594 2-595 through 2-597 2-598 2-599 through 2-602 2-603 2-604 2-605 and 2-606 2-607 2-608 2-609 and 2-610 2-611 through 2-612 2-613 through 2-619 2-620 2-621 and 2-622 2-623 2-624 through 2-628 2-629

2-630 through 2-636 2-637 through 2-639 2-640 through 2-643 2-643.1 through 2-643.5 (2-643.6 blank)/2-644 2-645 through 2-648 (2-648.1 blank)/2-648.2 2-649 and 2-650 2-651 2-652 through 2-654 2-655 2-656 and 2-657 2-658 2-659 2-660 and 2-661 2-661.1 through 2-661.3 2-661.4 blank)/ 2-662 2-663 and 2-664 2-665 2-665.1/(2-665.2 blank) 2-666 2-667 and 2-668 2-669 2-669.1 through 2-669.3 (2-669.4 blank)/2-670 2-671 through 2-673 2-674 through 2-685 2-686 2-687 through 2-690 2-691 2-692 through 2-696 2-696.1 through 2-696.4 2-697 through 2-702 2-703 2-704 through 2-708 2-709 2-710 through 2-714 2-715 2-716 through 2-726 2-727 2-728 through 2-730 2-731 through 2-733 2-734 2-735 through 2-740 2-741 2-742 2-743 2-744 2-745 and 2-746 2-747 2-748 through 2-756 2-757 2-758 and 2-759

D Change 6

Page *Change Page *Change No. No. No. No.

2-760 2-761 and 2-762 2-763 and 2-764 2-765 and 2-766 2-767 through 2-769 2-770 2-771 2-772 through 2-774 2-775 through 2-778 2-779 through 2-782 2-783/(2-784 blank) 2-785 through 2-788 2-789 2-790 and 2-791 2-792 through 2-794 2-795 2-796 2-797 through 2-806 2-807 and 2-808 2-809 2-810 2-811 2-812 through 2-818 2-819 and 2-820 2-821 2-822 through 2-826 2-827 and 2-828 2-829 and 2-830 2-831 and 2-832 2-833 through 2-856 2-857 2-858 through 2-860 2-861 2-862 through 2-866 2-867

2-868 through 2-873 2-874 2-875 through 2-877 2-878 2-879 and 2-880 2-881 2-882 and 2-883 2-884 2-885 and 2-886 2-887 2-888 and 2-889 2-890 2-891 through 2-894 2-895 2-896 through 2-898 2-899 2-900 and 2-901 2-902 2-903 and 2-904 2-905 2-906 through 2-924 2-925 2-926 through 2-932 2-933 2-934 through 2-936 2-937 2-938 through 2-952 2-952.1 and 2-952.2 2-952.3/(2-952.4 blank) 2-953 2-954 through 2-980 2-981 2-982 through 2-1013 2-1014 through 2-1018 2-1019 through 2-1074

INTRODUCTION

This manual is divided into two volumes:

Volume 1, TM 55-1905-223-24-18-1 consists of Chapters 1 and 2.

Volume 2 TM 55-1905-223-14-18-2 consists of Chapters 3 and 4, Appendixes A through D, Glossary and Index.

Change 6 i

TECHNICAL MANUAL HEADQUARTERS

No. 55-1905-223-24-18-1 WASHINGTON, D.C. 17 January 1989

UNIT, INTERMEDIATE DIRECT SUPPORT

AND INTERMEDIATE GENERAL SUPPORT

MAINTENANCE INSTRUCTIONS

FOR THE

LANDING CRAFT, UTILITY (LCU) BASIC CRAFT (PART 1)

DISTRIBUTION STATEMENT A: Approved for public release; distribution is unlimited.

TABLE OF CONTENTS

PAGE

PART I

CHAPTER 1 INTRODUCTION................................................................................................. 1-1

Section I General Information ............................................................................................ 1-1 Section II Equipment Data .................................................................................................. 1-2 Section III Principles of Operation........................................................................................ 1-3

CHAPTER 2 UNIT MAINTENANCE INSTRUCTIONS............................................................. 2-1

Section I Repair Parts, Special Tools; Test, Measurement, and Diagnostic Equipment (TMDE); and Support Equipment ..................................................... 2-1 Section II Service Upon Receipt ......................................................................................... 2-1 Section III Unit Preventive Maintenance Checks and Services (PMCS) ............................ 2-4 Section IV Unit Maintenance Troubleshooting ..................................................................... 2-96 Section V Unit Maintenance Procedures............................................................................. 2-183 Section VI Preparation for Storage or Shipment .................................................................. 2-1074

PART II

CHAPTER 3 INTERMEDIATE DIRECT SUPPORT MAINTENANCE

INSTRUCTIONS ................................................................................................. 3-1

Section I Repair Parts, Special Tools; Test, Measurement and Diagnostic Equipment (TMDE); and Support Equipment ..................................................... 3-1 Section II Service Upon Receipt ........................................................................................ 3-1

REPORTING ERRORS AND RECOMMENDING IMPROVEMENTS

You can help improve this publication. If you find any errors, or if you would like to recommend any improvements to the procedures in this publication, please let us know. The preferred method is to submit your DA Form 2028 (Recommended changes to Publications and Blank Forms) through the Internet, on the Army Electronic Product Support (AEPS) website. The Internet address is https://aeps.ria.army.mil.

The DA Form 2028 is located under the Public Applications section in the AEPS Public Home Page. Fill out the form and click on SUBMIT. Using this form on the AEPS will enable us to respond quicker to your comments and better manage the DA Form 2028 program. You may also mail, e-mail, or fax your comments or DA Form 2028 directly to the U.S. Army TACOM Life Cycle Management Command, ATTN:

AMSTA-LC-LMPP / TECH PUBS, 1 Rock Island Arsenal, Rock Island, IL 61299-7630. The e-mail address is tacomlcmc.daform2028@us.army.mil. The fax number is DSN 793-0726 or Commercial (309) 782-0726.

ii

TABLE OF CONTENTS - cont

PAGE

Section III Intermediate Direct Support Preventive Maintenance Checks and Services (PMCS)............................................................................. 3-2 Section IV Intermediate Direct Support Troubleshooting ..................................................... 3-20 Section V Intermediate Direct Support Maintenance Procedures ....................................... 3-43 Section VI Preparation for Storage or Shipment .................................................................. 3-753

CHAPTER 4 INTERMEDIATE GENERAL SUPPORT MAINTENANCE

INSTRUCTIONS ................................................................................................. 4-1

Section I Repair Parts, Special Tools; Test, Measurement, and Diagnostic Equipment (TMDE); and Support Equipment.................................... 4-1 Section II Service Upon Receipt ......................................................................................... 4-1 Section III Intermediate General Support Preventive Maintenance Checks and Services (PMCS) ............................................................................ 4-2 Section IV Intermediate General Support Troubleshooting Procedures .............................. 4-2 Section V Intermediate General Support Maintenance Procedures.................................... 4-4 Section VI Preparation for Storage or Shipment .................................................................. 4-62

APPENDIX A REFERENCES.................................................................................................... A-1

APPENDIX B MAINTENANCE ALLOCATION CHART............................................................. B-1

APPENDIX C EXPENDABLE/DURABLE SUPPLIES AND MATERIALS LIST......................... C-1

APPENDIX D TORQUE VALUES.............................................................................................. D-1

GLOSSARY ABBREVIATIONS AND DEFINITIONS............................................................... Glossary 1

ALPHABETICAL INDEX .................................................................................................................... Index 1

POWER DISTRIBUTION ................................................................................................................... FP – 1

Change 6 1-1

CHAPTER 1

INTRODUCTION

Page

Section I. General Information............................................................................................... 1-1

Section II. Equipment Data..................................................................................................... 1-2

Section III. Principles of Operation .......................................................................................... 1-3

SECTION I. GENERAL INFORMATION

1-1. Scope. The scope of this manual is as follows:

a. Type of Manual. Unit, Intermediate Direct Support and Intermediate General Support Maintenance manual.

b. Model Number and Equipment Name. Refer to the individual subsystems of this TM.

c. Purpose of Equipment. Refer to the individual subsystems of this TM and Operator's Manual TM 55-

1905-223-10.

1-2. Maintenance Forms, Records, and Reports. Department of the Army forms and procedures used for equipment maintenance are prescribed by DA PAM 750-8. The Army Maintenance Management System (TAMMS) User Manual.

1-3. Destruction of Army Materiel. Refer to TM 750-244-3 for instructions covering the destruction of Army materiel to prevent enemy use.

1-4. Reporting Equipment Improvement Recommendations (EIR). If your LCU needs improvement, let us know. Send us an EIR. You, the user, are the only one who can tell us what you don’t like about your equipment.

Let us know why you don't like the design or performance. If you have Internet access, the easiest and fastest way to report problems or suggestions is to go to https://aeps.ria.army.mil/aepspublic.cfm (scroll down and choose the “Submit Quality Deficiency Report” bar). The Internet form lets you choose to submit an Equipment Improvement Recommendation (EIR), a Product Quality Deficiency Report (PQDR or a Warranty Claim Action (WCA). You may also submit your information using an SF 368 (Product Quality Deficiency Report). You can send your SF 368 via e-mail, regular mail, or facsimile using the addresses/facsimile numbers specified in DA PAM 750-8, The Army Maintenance Management System (TAMMS) Users Manual. We will send you a reply.”

1-5. Preparation for Storage or Shipment. Administrative storage of equipment issued to and used by Army activities will have preventive maintenance performed in accordance with the Preventive Maintenance Checks and Services (PMCS) charts before storing. When removing the equipment from administrative storage, the PMCS should be performed to assure operational readiness. Preparation of equipment for shipment or short term storage is covered in paragraph 2-9.

1-6. Characteristics, Capabilities, and Features. A very broad view of the Basic Craft Manual (TM 55-1905- 223-24-18-1/2) components is covered in the Operator's Manual (TM 55-1905-223-10).

1-7. Location and Description of Major Components. Refer to Section II, Equipment Description of Operator's Manual (TM 55-1905-223-10).

1-2

Section II. EQUIPMENT DATA

1-8. Equipment Data. Refer to the equipment data given in the Operator's Manual (TM 55-1905-223- 10).

1-9. Safety, Care, and Handling. Safety precautions must be observed at all times while performing maintenance. General WARNINGS and first-aid data appear in the front of this manual. Review all safety information before starting any task. Carefully read through an entire maintenance procedure before performing any maintenance function. Make sure the task can be done safely. All WARNINGS, CAUTIONS, and NOTES are of great importance to your safety and the safety of the equipment.

Section III. PRINCIPLES OF OPERATION

1-10. General. The following paragraphs provide principles of operation of the LCU systems.

1-11. Power Generation System. The power generation system provides the LCU with primary (240 Vac, 3-phase, 60Hz, 250kW) and emergency (240 Vac, 3-phase, 60Hz, 40kW) electrical power (FIGURE 1-1). Primary power is generated by one of two ship's service diesel generator (SSDG) sets, which supply the main switchboard and the emergency switchboard through a bus tie from the main switchboard. Emergency power is generated by an emergency diesel generator set, which supplies the emergency switchboard for continued operation of vital systems and equipment during loss of primary power. In port, the LCU is capable of receiving shore power (480/240 Vac) through a shore power cable terminating at a two-connection shore power box. I f available shore power is 480 Vac, the power is selected at the main switchboard through a circuit breaker and stepped down to 240 Vac by three shore power transformers, prior to main switchboard entry. Shore power of 240 Vac is selected at the main switchboard by circuit breaker, and bypasses the 480 Vac transformers.

Automatic bus transfer equipment, located in the emergency switchboard, isolates the emergency switchboard from the main switchboard upon loss of primary power and allows emergency power to be supplied through the emergency switchboard.

a. Ship Service Diesel Generator Engine. Two diesel generator set engines power individual ship service diesel generators, which provide primary electrical power throughout the LCU. The port ship service diesel generator engine (No. 2) is air started; the starboard ship service diesel generator engine (No. 1) is electrically started. Engine control and monitoring are provided from the engine room console and at the individual engine control panel.

b. Shin's Service Generator. Two 250 kW brushless exciter generators provide 240 Vac, three-phase, 60 Hz primary ship's service power. Each generator is capable of providing 110 percent of the necessary at sea load for the propulsion and safety of the ship under normal conditions. The generators may be operated in parallel;

however, normal operation has one generator on line and the other in reserve.

C. Main Switchboard. The main switchboard (FIGURE 1-2), located in the engine room operating station, provides generator selection, shore power selection, and power distribution for ship's service 240 Vac and 120 Vac power. Distribution of 120 Vac is accomplished by ship's service 120 Vac transformers located in the engine room operating station. The emergency switchboard bus tie provides 240 Vac to the emergency switchboard. Power selection is provided by closing circuit breakers on the switchboard. Power monitoring is provided by ammeters, voltmeters, frequency meters, and synchronization meters. Controls are provided for manual and automatic generator voltage regulation and generator engine speed regulation, The switchboard bus tie also serves as an emergency 240 Vac power feedback source for the main switchboard from the emergency switchboard, to power selected equipment systems during emergency power conditions. An interlock system is incorporated into the switchboard to prevent shore power from being applied to the switchboard while generator power is applied. The interlock system also prevents the emergency switchboard emergency generator circuit breaker from being closed.

d. Emergencv Switchboard. The emergency switchboard (FIGURE 1-3), located in the emergency generator room, normally receives 240 Vac primary power from the main

1-3

1-4

Change 6 1-5

FIGURE 1-2. Main Switchboard.

1-6 Change 6

FIGURE 1-3. Emergency Switchboard.

Change 6 1-7 switchboard through the bus tie. Upon loss of ship's service power from the main switchboard, automatic bus transfer equipment within the emergency switchboard isolates the emergency switchboard and provides for automatic or manual starting of the emergency generator. Power monitoring of the emergency generator is provided by a voltmeter, ammeter, wattmeter, and frequency meter. A voltage adjustment control for the emergency generator output is also provided. A main switchboard bus tie circuit breaker and bus tie bypass switch permit distribution of emergency power (240 Vac) to the main switchboard. The emergency generator circuit breaker is prevented from being closed by an interlock system when primary power is being provided through the bus tie. Power distribution is accomplished through circuit breakers on the switchboard 240 Vac, 120 Vac, and 24 Vdc distribution panels. A step-down transformer provides 120 Vac back to the switchboard, and a 24 Vdc battery charger and switchboard batteries provide 24 Vdc back to the switchboard for distribution. A selector switch located on the emergency switchboard allows the emergency generator battery charger to provide backup power to the emergency switchboard batteries.

e. Shore Power Box. The shore power box is located on the 01 level, aft exterior bulkhead. The two-connection shore power box provides a cable connection for shore power and another cable connection for providing shore power to another vessel in tandem.

1-12 Control and Monitoring System. The control and monitoring system provides for the centralization of control and monitoring functions for the main propulsion power train, selected pumps, ship's service diesel generators, and vital alarms. Pilothouse and engine room propulsion control is possible without intervention of engine room personnel. Primary control is from the pilothouse console with one soldier at the engine room console. The system permits constant automatic monitoring of vital machinery operating conditions and initiation of many functions from the engine room console. The control and monitoring system consists of the following:

engine room console, pilothouse console, machinery plant monitoring and alarm system, engine order telegraph, steering control panel, dual station throttle control system, bowthruster and auxiliary fire pump control, fire detection, and bow ramp control.

a. Engine Room Console (ERC). The ERC provides a centralized engine room location for: controlling propulsion shafts direction and speed; monitoring machinery alarm conditions; acknowledging engine orders;

alerting engineering personnel of assistance needed and acknowledging the dead man alarm notification from the bridge. These functions are provided to the ERC via interfaces with the machinery plant monitoring system, engine order telegraph, and dual station throttle control system.

b. Pilothouse Console (PHC). The PHC provides control and monitoring of the main propulsion power, speed and direction during usual ship operating and maneuvering conditions without intervention of engine room personnel. The PHC also provides for: machinery plant monitoring; autopilot operation; steering system selection and monitoring; bowthruster/auxiliary fire pump engine control; bowthruster control; communicating desired propulsion shaft direction and speed to the ERC; operation of blinker lights; operation of bow ramp; operation of ship's intercommunications system; and activation of ship's general alarm system. These functions are provided to the PHC via interface with the machinery plant monitoring system; autopilot; steering control panel, helm (wheel) and rudder angle indicator; dual station throttle control system, port and starboard main propulsion engine shaft tachometers; bowthruster engine shaft tachometer; bowthruster control panel; engine order telegraph;

blinker light key; ship's intercommunications panel; and the general alarm contactor.

1-8

c. Dual Station Throttle Control. The dual station throttle control system provides pneumatic direction and throttle control for the main propulsion engines from the PHC and ERC, and the bowthruster/auxiliary fire pump engine from the PHC only.

(1) Main propulsion engine control. The system provides two throttle and direction control valves at both the PHC and the ERC. The ERC contains a pilot air valve for ERC control of the system or transfer of control air to the PHC. The PHC contains a pushbutton air valve for control air at the pilothouse.

(2) Bowthruster/auxiliary fire pump engine control. The PHC contains a throttle control air valve for bowthruster/auxiliary fire pump selection. Selection results in engaging the appropriate power take-off (PTO). The valve also provides throttle control for the engine.

d. Machinery Plant Monitoring System. The machinery plant monitoring system is a microcomputer based system which monitors vital machinery operating conditions. The system consists of the engine room console panel and a color video cathode ray tube (CRT) display on the engine room console and the bridge console panel and color video CRT display located on the pilot house console. The CRT displays date and time, alarm messages, and monitored status. The monitored status is presented in seven pages of displays.

Page 1 - Machinery Plant Control System. Provides a table of contents for the system.

Page 2 - Engine Summary. Displays oil pressure, water temperature, stack temperature, and RPM for both port and starboard main engines.

Page 3 - Engine Summary. Provides oil temperature and oil differential for both port and starboard main engines and also displays left and right main engine bank temperatures for both main engines.

Page 4 - Generator Summary. Displays oil pressure, water temperature, oil temperature, and stack temperature for the port and starboard SSDG engines.

Page 5 - Reduction Gears. Provides oil pressure and oil temperature for the port and starboard reduction gears.

Page 6 - Bowthruster Engine. Displays oil pressure and water temperature for the bowthruster engine.

Page 7 - Fire Pump/Main. Provides indication of valve position for main and emergency system, control air pressure, and start air pressure for the port and starboard main engines and SSDG number 2.

(1) Engine room console panel. The engine room console panel provides a centralized engine room location for starting and stopping the bilge/ballast pump, fresh water makers, fresh water pumps, fire pumps, ship's service diesel generators, and main propulsion engines. Indicator lamps are provided for run condition display of other equipment, control station in operation (PHC or ERC), dead man alarm, and engineers-assistance-needed pushbuttons. The panel also provides controls for the CRT display and audible alarm.

(2) Bridge console panel. The bridge console panel provides controls for main propulsion engines emergency stop, bowthruster/auxiliary fire pump engine start and stop, exhaust and supply ventilator fans shutdown, fire pumps No. 1 and No. 2 start and stop, and dead man alarm illuminated pushbutton. Indicator lamps are provided for port and starboard steering motor running, control station in operation, bowthruster engine running, and fire pumps No. 1 or No. 2 running. The panel also provides controls for operating the panel and CRT display.

e. Engine Order Telegraph (EOT) . The EOT communicates desired propeller shaft speed and direction from the pilothouse console to the engine room console when the bridge is not in direct control of the main engines. The system consists of drop-in panels in both the ERC and PHC. The panels contain illuminated pushbuttons and bel ls. The bells ring at both locations. A two-wire data connection between the panels is used to send and acknowledge orders taken or sent from either panel.

Direction is monitored in ahead, astern, and stop position. Wrong direction status is visually and audibly alarmed at both stations. Each panel also alarms for order and power failures.

(1) Power group. The power group consists of two illuminated pushbuttons:

PWR ON/LAMP TEST and COMM FAIL/SILENCE. The PWR ON/LAMP TEST pushbutton will apply power to that unit: a power failure of one of the two independent power supplies, fed from Wheel House DC Panel EP024-1, causes the PWR ON/LAMP TEST to flash on and off and the audible alarm to sound. Pushing the pushbutton will silence the alarm, and if one of the power supplies has failed, the PWR ON/LAMP TEST will continue to flash. If both power supplies are available, the lamp will light steady. When a unit is first turned on, or power is restored, the PWR ON/LAMP TEST lamp will flash and the audible alarms will activate. Pushing the pushbutton will silence the alarms and cause the lamp to light steady. The unit then will update itself to the other unit and display any detected faults by alarm or flashing lamps.

Communication failure between EOT units will be alarmed by the flashing COMM FAIL/SILENCE illuminated pushbutton and audible alarms. Pushing the pushbutton will silence the audible alarm, and the front panel will display various types of communication failures by indicator lamps. Silencing an alarm within a unit group silences all alarms in that group.

(2) Port and starboard telegraph group. This group consists of ten port and starboard commands (orders): four ahead (AHD) orders, four astern (AST) orders, one BRIDGE CONTROL order, and one STOP order. Completed orders are displayed as steadily illuminated pushbuttons and silenced, audible alarms. A new order can be placed by pushing another pushbutton which then flashes at both stations (pilothouse and engine room consoles). At the same time, the internal horn sounds, and will continue to sound until the new order is acknowledged. The new order is acknowledged at the receiver station by pushing the flashing pushbutton, which then turns to the steady mode. The previous order is then cancelled, and all audible alarms are silenced. New orders can be changed or cancelled at the sending unit prior to acknowledgement by pushing another order pushbutton. When the BRIDGE CONTROL order is acknowledged, the AHD, STOP, and AST pushbutton lamps are turned o f f . When bridge control is relinquished by placing and acknowledging another order, the BRIDGE CONTROL lamp is turned off, thereby indicating engine room control.

(3) Wrong direction group. This group consists of two indicating lamps (port and starboard shafts) which alarm when a wrong direction condition exists. The wrong direction display and alarm is active after an AHD, STOP, or AST order is acknowledged. If the order has been acknowledged and the shaft direction does not

1-9 match the order (AHD-STOP-AST), the wrong direction alarm is activated (WRONG DIRECTION lamp flashes and audible alarm sounds). The flashing WRONG DIRECTION alarm lamp operates immediately but the audible alarm may be delayed to compensate for changing of direction from AHD to AST or AST to AHD. When the correct direction status is achieved, the wrong direction visual and audible alarms are cancelled. If the direction of propulsion thrust changes from the acknowledged EOT direction, then the wrong direction alarm is re-activated.

(4) Standby/finished with engines group. This group consists of three illuminated pushbuttons: STANDBY, CANCEL STANDBY, and FINISHED WITH ENGINES.

Together, they function as a separate EOT group similar to the port and starboard EOT groups.

(a) A STANDBY order may be placed independently of any other order.

(b) STANDBY, whether acknowledged or not, may be cancelled by a CANCEL STANDBY order from the initiating EOT.

(c) A receiving EOT must acknowledge a STANDBY order before it can issue a CANCEL STANDBY order.

(d) If the port and/or starboard EOT are active, a FINISHED WITH ENGINES order may be initiated only if both port and starboard EOTs have acknowledged BRIDGE CONTROL or STOP orders.

f . Steering Control Panel. The steering control panel is located on the pilothouse console. The panel provides system power selection, mode of operation including full followup (FFU) using the helm, non-followup (NFU) using pushbutton switches on the panel, and AUTO (autopilot).

for each steering gear pumpset, The panel also contains an alarm panel alarm test switch, and cancel switch to silence the alarm. Rudder position commands are input to the steering gear by movement of the helm or pressing pushbutton switches. These input signals operate solenoid activated hydraulic control valves in the pumpset selected. The control valves direct the flow of hydraulic fluid from the pumpset to power cylinders attached to the rudder tiller arms which position the rudder. The steering control panel contains a rudder angle indicator that displays the actual rudder position in degrees. A rudder order indicator below the panel displays a direct indication of the actual position of the helm. The pumpset status panel includes two sets of six indicators which give information on the status of each pumpset system. The green status lamps (POWER AVAILABLE, MOTOR RUN) intensity is adjustable by a DIMMER control. The remainder of the status lamps are activated-by alarm sensors and remain on after the alarm horn has been cancelled, and until the fault is cleared.

The NFU pushbutton switches operate relays, which in turn operate the pumpset solenoids until released. The rudder will then remain stationary to the position commanded. When in FFU or AUTO mode, the NFU pushbuttons control the rudder to move in the direction commanded as long as the pushbuttons are depressed. Upon releasing a NFU pushbutton, steering control of the rudder will return to the control mode selected. When in FFU, steering responds to the action of the helm. The rudder will continue to move after the helm is moved to the desired position, until the rudder matches the exact position of the helm as indicated by the rudder order indicator. When in AUTO mode, the course set by the AUTOPILOT allows hands-off steering of the vessel.

1-10

Change 6 1-11

g. Bowthruster Control. The bowthruster control panel located on the pilothouse console provides control and monitoring of the bowthruster waterjet operation. Indicator lamps are provided to indicate that electrical power and hydraulic power are available, minimum hydraulic oil level in the hydraulic oil tank, and minimum lube oil level in the lube oil tank. Alarm horns accompany the visual indication of minimum hydraulic oil and lube oil tank levels. Pushbutton controls are also provided for activating the electrical power unit and hydraulic unit. A toggle switch is used for steering the waterjet nozzle to the angle of thrust desired. The angle of thrust is displayed on a meter.

h. Fire Detection. The fire control panel is located in the aft section of the pilothouse and provides the bridge with status of the vessel fire detection system. The fire control panel is the system main controller processor. It processes all incoming signals from each vessel zone and converts them to an independent output that is displayed on the panel: alarm horn, alarm and status lamps, trouble lamps, battery charger, current and voltage meters. Controls are provided for system reset and lamp testing, alarm silencing, and trouble silencing.

i. Bow Ramp Control. The bow ramp control system consists of three bow ramp control panels: pilothouse console, boatswain storeroom (bow ramp winch), and starboard forecastle deck. Controls are provided for turning the winch electric motor off and on (PHC and boatswain storeroom only) and raising and lowering the ramp.

Pushbuttons are provided for starting and stopping the winch hydraulic pump and taking up tension (slack) on the wire rope. Indicator lamps provide visual display of hydraulic oil temperature (above 150°F), tension (slack wire rope), and hydraulic pump running.

j. Dead Man Alarm. The dead man alarm system is incorporated in the machinery plant monitoring engine room console panel and bridge console panel. The bridge console panel contains an illuminated pushbutton that when depressed causes the corresponding illuminated pushbutton and audible horn on the engine room console panel to be activated. If the engine room attendant does not acknowledge the dead man activation by the bridge within a specified time, alarms will sound, signifying the engine room attendant cannot acknowledge. If the engine room attendant answers the dead man alarm within the specified time, both illuminated pushbuttons will extinguish and horn will be silenced.

k. Engineer's Assistance Needed. The engineer's assistance needed system is incorporated in the machinery plant monitoring engine room console panel. The assistance needed system notifies off watch engineers that the ERC attendant needs assistance. The system is activated when the ENGINEER ASSISTANCE NEEDED illuminated pushbutton on the ERC is pushed. This action causes an audible alarm and flashing lamp to be activated at remote panels in the mess room and the chief engineer's stateroom. Pressing the illuminated pushbutton on one of the remote panels will acknowledge the assistance needed request.