M3_CROP_TM_9-3990-260-14P.pdf

TM 9-3990-260-14&P

TECHNICAL MANUAL

OPERATOR’S, UNIT, DIRECT SUPPORT AND

GENERAL SUPPORT MAINTENANCE MANUAL

(INCLUDING REPAIR PARTS AND SPECIAL TOOLS LIST)

CONTAINER ROLL-IN/OUT

PLATFORM (CROP) MODEL M3

NSN 3990-01-442-2751

CONTAINER ROLL-IN/OUT

PLATFORM (CROP) MODEL M3A1

NSN 3990-01-450-5671

DISTRIBUTION RESTRICTION

Approved for public release;

Distribution is unlimited

HEADQUARTERS, DEPARTMENT OF THE ARMY

27 JULY 2001

INTRODUCTION (M3 CROP) 1-1

OPERATING INSTRUCTIONS (M3 CROP) 2-1

OPERATOR MAINTENANCE INSTRUCTIONS 3-1

(M3 CROP)

UNIT MAINTENANCE INSTRUCTIONS (M3 CROP) 4-1

DIRECT SUPPORT MAINTENANCE (M3 CROP) 5-1

INTRODUCTION (M3A1 CROP) 6-1

OPERATING INSTRUCTIONS (M3A1 CROP) 7-1

OPERATOR MAINTENANCE INSTRUCTIONS 8-1

(M3A1 CROP)

UNIT MAINTENANCE INSTRUCTIONS (M3A1 CROP) 9-1

DIRECT SUPPORT MAINTENANCE (M3A1 CROP) 10-1

MAINTENANCE ALLOCATION CHART (MAC) B-1

COMPONENTS OF END ITEM (COEI) & BASIC C-1

ISSUE ITEMS (BII) LISTS

EXPENDABLE AND DURABLE ITEMS LIST E-1

REPAIR PARTS AND SPECIAL TOOLS LIST F-1

ILLUSTRATED LIST OF MANUFACTURED ITEMS G-1

MANDATORY REPLACEMENT PARTS LIST H-1

TOOL IDENTIFICATION LIST I-1

LUBRICATION INSTRUCTIONS (M3 CROP) J-1

LUBRICATION INSTRUCTIONS (M3A1 CROP) K-1

ADDITIONAL AUTHORIZATION LIST (AAL) D-1

Change 1 a

Bail bar may have metal slivers or sharp edges. Wear gloves if handling or injury to per-sonnel could result.

• M3 CROP End structure assembly weighs 370 lbs (168 kg). Raising and lowering must be conducted on level ground. Use the aid of a suitable lifting device when rais-ing or lowering end structure assembly to prevent serious injury or death to personnel.

• Ensure that at least one crewmember holds the end structure assembly in the upright position until it is secured with the front and rear pins.

• CROPs must be empty when stacked. Attempting to stack loaded CROPs could cause serious injury or death to personnel.

• Always lift a stack of CROPs by connecting to the bottom CROP, either by overhead MHE or forklift. Failure to comply may result in severe injury to personnel or dam-age to equipment.

Ensure web straps are wrapped a minimum of three times around ratchet of web strap.

Failure to comply may result in web strap being released and CROP may fall, causing severe injury or death to personnel.

M3 CROP weighs 3,800 lbs (1,724 kg) and the M3 CROP (S/N SC09001 and up) weighs 3,730 lbs (1,692 kg). Ensure all personnel stand clear of CROP when CROP is being moved. Failure to comply may result in severe injury or death to personnel.

ALWAYS use work gloves when loading/unloading or stacking/unstacking CROP assem-blies. Failure to follow the warning may result in serious injury to personnel.

b Change 1

Always use a ground guide when transferring CROP loads from PLS trucks to trailers, to advise the driver of any load binding problems or of possible truck to trailer separation.

Failure to follow the warning may result in damage to equipment or serious injury to per-sonnel.

• Ensure web traps are wrapped a minimum of three times around ratchet of web strap.

Failure to comply may result in web strap being released and CROP may fall, causing severe injury or death to personnel.

• One M3 CROP weighs 3,800 lbs (1,724 kg) and the M3 CROP (S/N SC09001 and

up) weighs 3,730 lbs (1,692 kg). Six M3 CROPs weigh 22,800 lbs (10,342 kg) and six M3 CROPs (S/N SC09001 and up) weigh 22,380 lbs (10,152 kg). Gross weight of a fully loaded CROP is 36,250 lbs (16,443 kg). Ensure all personnel stand clear of CROPs when being moved. Failure to comply may result in severe injury or death to personnel.

• Always lift a stack of CROPs by connecting to the bottom CROP. Failure to comply may result in severe injury to personnel or damage to equipment.

• One M3 CROP weighs 3,800 lbs (1,724 kg) and the M3 CROP (S/N SC09001 and

up) weighs 3,730 lbs (1,692 kg). Six M3 CROPs weigh 22,800 lbs (10,342 kg) and six M3 CROPs (S/N SC09001 and up) weigh 22,380 lbs (10,152 kg). Ensure all per-sonnel stand clear of CROP when CROP is being moved. Failure to comply may result in severe injury or death to personnel.

• Always lift a stack of CROPs by connecting lifting device to the bottom CROP. Fail-ure to comply may result in severe injury to personnel or damage to equipment.

• Attempting to load stack of CROPs or a loaded CROP in ISO container requires ex-treme care to prevent damage to equipment. Clearance between the ceiling of the ISO container and top of the load and inside walls of the ISO container and each side of CROP is unusually close, requiring at least one ground guide to assist during the dif-ficult insertion procedure.

• Ensure web straps securing stack of CROPs are removed prior to insertion into an ISO container. Failure to comply may result in damage to web straps during insertion procedure.

Do not stand between the CROP and the ISO container. Ensure all personnel stand clear of CROP when CROP is being moved. Failure to comply may result in severe injury or death to personnel.

Change 1 c

Closely observe stack of CROPs during this part of offloading to ensure it does not come in contact with top of ISO container door opening or inside walls of ISO container. Failure to exercise extreme caution during insertion may result in damage to ISO container or CROP.

• Do not stand between the CROPs and the ISO container Ensure all personnel stand clear of CROP when CROP is being moved. Failure to comply may result in severe injury or death to personnel.

• Exercise extreme caution to prevent contact between the PLS truck hook arm and top of ISO container door opening. Failure to comply can result in damage to ISO con-tainer door frame and/or door latches.

• Forklift must be capable of lifting gross weight of loaded CROP. Failure to comply may result in damage to equipment or severe injury or death to personnel. Do not drive a forklift on the CROP deck; doing so exceeds point load capability of the deck.

• One M3 CROP weighs 3,800 lbs (1,724 kg) and the M3 CROP (S/N SC09001 and

up) weighs 3,730 lbs (1,692 kg). Six M3 CROPs weigh 22,800 lbs (10,342 kg) and six M3 CROPs (S/N SC09001 and up) weigh 22,380 lbs (10,152 kg). Gross weight of a fully loaded CROP is 36,250 lbs (16,443 kg). Ensure all personnel stand clear of CROP when CROP is being moved. Failure to comply may result in severe injury or death to personnel.

• Attempting to load a CROP in ISO container requires extreme care to prevent dam-age to equipment. Clearance between the inside of ISO container and each side of CROP is unusually close.

• Always lift a stack of CROPs by connecting to the bottom CROP. Failure to comply may result in severe injury to personnel or damage to equipment.

• Forklifts are required to have forks a minimum of 68 in. (173 cm) in length. Failure to comply may result in severe injury to personnel or damage to equipment.

d

• Ensure forklift tines are horizontal or pointed slightly downward to ensure they do not contact crossmembers or the underside of the deck when the tines are being inserted under the CROP or when the CROP is being lifted from the front. Prior to lifting, ensure the tines are in full contact with the front beam and are not contacting cross-members. Failure to comply may result in damage to equipment.

• Ensure forklift tines are positioned to the outside of the CROP main beams, between the main beams and the multipurpose provisions. Do not attempt to lift front of CROP with forklift tines on the inside of main beams. Failure to comply may result in dam-age to equipment.

• Exercise extreme caution to ensure the CROP is properly aligned to be inserted into the ISO container. The CROP is designed with less than 1/2 inch clearance on either side between the CROP and ISO container door frame. Failure to comply may result in damage to equipment.

• Ensure forklift tines are horizontal or pointed slightly downward to ensure they do not contact crossmembers or the underside of the deck when the tines are being inserted under the CROP or when the CROP is being lifted from the front. Prior to lifting, ensure the tines are in full contact with the front beam and are not contacting cross-members. Failure to comply may result in damage to equipment.

• Ensure forklift tines are positioned to the outside of the CROP main beams, between the main beams and the multipurpose provisions. Do not attempt to lift front of CROP with forklift tines on the inside of main beams. Failure to comply may result in dam-age to equipment.

Change 1 e

Solvent cleaning compound (MIL-PRF-680) can cause eye and skin irritation. Wear pro-tective rubber gloves and chemical splash goggles or faceshield to avoid skin or eye con-tact. Use in a well ventilated area. First aid for skin contact: remove any contaminated clothing and wash skin thoroughly with soap and water. First aid for eye contact: flush with water for 15 minutes or until irritation subsides. If irritation persists, call a physician. If overcome by vapors, move from exposed area and call a physician. In case of ingestion, do not induce vomiting, call a physician immediately.

• End structure assembly dead weight is beyond two-man lift limit. The end structure assembly is equipped with a rear pin and hex nut which secures the end structure and serves as a friction device which aids in lowering the end structure assembly.

• Lowering operations must by conducted on level ground.

• Do not stand under end structure assembly when raising or lowering.

• Use an assistant when raising or lowering the end structure assembly to prevent seri-ous injury to personnel.

M3 CROP and load weigh up to 36,250 lbs (16443 kg). Loaded M3 CROP on PLS truck or trailer must not exceed 36,250 lbs (16443 kg). Attach suitable lifting device to avoid serious injury or death to personnel.

The end structure assembly must be securely held by the assistant to ensure it does not shift after the last rear pin is removed. Failure to comply could result in injury to personnel.

Support roller during removal or roller may drop causing injury to personnel.

Use a respirator when removing paint, primer, and galvanizing with an oxyacetylene torch because of the toxic gases.

f

• M3A1 A-frame assembly weighs 400 lbs (182 kg). Use two personnel for raising or lowering A-frame to prevent serious injury or death to personnel.

• Ensure that at least one crewmember holds the A-frame assembly in the upright posi-tion until it is secured with at least one of the two front pins. Failure to comply may result in severe injury to personnel.

• Ensure web straps are wrapped a minimum of three times around ratchet of web strap.

Failure to comply may result in web strap being released and M3A1 CROP may fall, causing severe injury or death to personnel.

• One M3A1 CROP weighs 4,000 lbs (1,814 kg). Six M3A1 CROPs weigh 24,000 lbs (10,909 kg). Ensure all personnel stand clear when M3A1 CROP is being moved.

Failure to comply may result in severe injury or death to personnel.

Ensure pads on web straps are positioned in lifting clevis of lifting device. Failure to com-ply may result in breakage of web straps causing severe injury or death to personnel.

M3A1 CROP weighs 4,000 lbs (1,814 kg). Ensure all personnel stand clear when M3A1 CROP is being moved. Failure to comply may result in severe injury or death to personnel.

Ensure web straps are wrapped a minimum of three times around ratchet of web strap.

Failure to comply may result in web strap being released and M3A1 CROP may fall, caus-ing severe injury or death to personnel.

ALWAYS use work gloves when loading/unloading or stacking/unstacking CROP assem-blies. Failure to follow the warning may result in serious injury to personnel.

Always use a ground guide when transferring CROP loads from PLS trucks to trailers, to advise the driver of any load binding problems or of possible truck to trailer separation. Failure to follow the warning may result in damage to equipment or serious injury to personnel.

•• Do not stand under A-frame assembly when raising or lowering.

•• Use an assistant when raising or lowering the A-frame assembly to prevent serious injury to personnel.

•• One M3A1 CROP weighs 4,000 lbs (1,814 kg). Six M3A1 CROPs weigh 24,000 lbs (10,909 kg). Ensure all personnel stand clear when M3A1 CROP is being moved.

Failure to comply may result in severe injury or death to personnel.

•• Attempting to load stack of M3A1 CROPs or a loaded M3A1 CROP in ISO container requires extreme care to prevent damage to equipment. Clearance between the ceiling of the ISO container and top of the load and inside walls of the ISO container and each side of M3A1 CROP is designed to be close, requiring at least one ground guide to assist during the insertion procedure.

Do not stand between the M3A1 CROP and the ISO container Ensure all personnel stand clear of M3A1 CROP when M3A1 CROP is being moved. Failure to comply may result in severe injury or death to personnel.

•• Forklift must be capable of lifting gross weight of loaded M3A1 CROP. Failure to comply may result in damage to equipment or severe injury or death to personnel.

•• One M3A1 CROP weighs 4,000 lbs (1,814 kg). Six M3A1 CROPs weigh 24,000 lbs (10,909 kg). Ensure all personnel stand clear when M3A1 CROP is being moved.

Failure to comply may result in severe injury or death to personnel.

•• Attempting to load stack of M3A1 CROPs or a loaded M3A1 CROP in ISO container requires extreme care to prevent damage to equipment. Clearance between the inside of ISO container and each side of M3A1 CROP is designed to be close.

•• Forklifts are required to have forks a minimum of 68 in. (173 cm) in length.

Failure to comply may result in severe injury to personnel or damage to equipment.

g

• Do not stand between the M3A1 CROP and the ISO container. Ensure all personnel stand clear of M3A1 CROP when M3A1 CROP is being moved. Failure to comply may result in severe injury or death to personnel.

• When loading or unloading CROP from container, exercise extreme caution to prevent contact between the PLS truck hook arm and the ISO container door header, especially the door latch cams. Failure to comply can result in damage to ISO container door cams, preventing door from being secured.

• Ensure forklift tines are horizontal or pointed slightly downward to ensure they do not contact crossmembers or the underside of the deck when the tines are being inserted under the M3A1 CROP or when the M3A1 CROP is being lifted from the front. Prior to lifting, ensure the tines are in full contact with the front beam and are not contacting crossmembers. Failure to comply may result in damage to equipment.

• Ensure forklift tines are positioned to the outside of the M3A1 CROP main beams, between the main beams and the multipurpose provision rings. Do not attempt to lift front of M3A1 CROP with forklift tines on the inside of main beams. Failure to com-ply may result in damage to equipment.

• Exercise extreme caution to ensure the M3A1 CROP is properly aligned to be inserted into the ISO container. The M3A1 CROP is designed with less than ½ inch clearance on either side between the M3A1 CROP and ISO container door frame. Failure to comply may result in damage to equipment.

• Ensure forklift tines are horizontal or pointed slightly downward to ensure they do not contact crossmembers or the underside of the deck when the tines are being inserted under the M3A1 CROP or when the M3A1 CROP is being lifted from the front. Prior to lifting, ensure the tines are in full contact with the front beam and are not contacting crossmembers. Failure to comply may result in damage to equipment.

• Ensure forklift tines are positioned to the outside of the M3A1 CROP main beams, between the main beams and the multipurpose provision rings. Do not attempt to lift front of M3A1 CROP with forklift tines on the inside of main beams. Failure to com-ply may result in damage to equipment.

h

Change 1 i/(j blank)

Solvent cleaning compound (MIL-PRF-680) can cause eye and skin irritation. Wear pro-tective rubber gloves and chemical splash goggles or faceshield to avoid skin or eye con-tact. Use in a well ventilated area. First aid for skin contact: remove any contaminated clothing and wash skin thoroughly with soap and water. First aid for eye contact: flush with water for 15 minutes or until irritation subsides. If irritation persists, call a physician. If overcome by vapors, move from exposed area and call a physician. In case of ingestion, do not induce vomiting, call a physician immediately.

M3A1 CROP and load weighs up to 36,250 lbs (16,443 kg). Loaded M3A1 CROP on PLS truck or trailer must not exceed 36,250 lbs (16,443 kg).

A-frame assembly weighs 400 lbs (182 kg). Do not stand under the A-frame assembly when raising or lowering. Use the aid of a suitable lifting device when raising or lowering the A-frame during replacement procedures. Failure to comply may result in serious injury or death to personnel.

The A-frame assembly must be laying on back, or folded forward to horizontal position, to ensure it does not shift after the last rear pin is removed. Failure to comply could result in in-jury to personnel.

• Underneath the CARC paint, the M3A1 CROP is completely galvanized with zinc.

Zinc fumes, released by the burning of the zinc during welding repairs, are extremely toxic. Welding personnel must exercise extreme caution or wear respirators, when performing welding repairs.

• Use respirator when removing paint, primer, and galvanizing with an oxyacetylene torch because of the toxic gases.

Change 1 A

LIST OF EFFECTIVE PAGES

NOTE

A vertical line in the outer margins of the page indicates the portion of text effected by the change. Changes to illustrations are indicated by miniature pointing hands.

Change to wiring diagrams is indicated by shaded areas.

Dates of issue for original and change pages are:

Original - 27 July 2001 Change 1 - 10 November 2006

TOTAL NUMBER OF PAGES FOR FRONT AND REAR MATTER IS 38 AND TOTAL NUMBER OF CHAP-

TERS IS 10 CONSISTING OF THE FOLLOWING:

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

Cover (Back blank) 1 a to c 1 d 0 e 1 f to h 0 i (j blank) 1 i 1 ii 0 iii 1 iv 0 1-1 to 1-2 1 1-3 0 1-4 to 1-7 1 1-8 to 1-9 0 1-9.1 to 1-10 1 2-1 to 2-4 0 2-4.1 to 2-10 1 2-11 to 2-18 0 2-19 1 2-20 0 2-21 1 2-22 0 2-23 1 2-24 0 2-25 1 2-26 to 2-27 0 2-28 to 2-32 1 2-33 to 2-34 0 2-35 1 2-36 to 2-39 0 2-40 to 2-42 1 2-43 to 2-47 0 2-48 1 2-49 to 2-50 0 2-51 to 2-52 1 3-1 to 3-4 0

4-1 0 4-2 to 4-5 1 4-6 to 4-12 0 4-13 1 4-14 0 4-15 to 4-17 1 4-18 to 4-24 0 5-1 to 5-10 1 6-1 to 6-2 0 6-3 1 6-4 to 6-8 0 7-1 to 7-36 0 7-37 1 7-38 to 7-39 (7-40 blank) 0 8-1 to 8-2 0 9-1 0 9-2 to 9-3 1 9-4 0 9-5 1 9-6 to 9-11 0 9-12 1 9-13 to 9-21 0 9-22 1 9-23 to 9-28 0 10-1 0 10-2 to 10-3 1 10-4 0 10-5 to 10-7 1 10-8 0 A-1 0 A-2 1 B-1 to B-3 0 B-4 1 B-5 (B-6 blank) 0 C-1 (C-2 blank) 1 D-1 (D-2 blank) 1

E-1 0 E-2 1 F-1 to F-5 0 F-6 1 F-7 to Fig 1 0 Fig 1a to 1-2 1 Fig 2 0 2-1 1 Fig 3 0 3-1 1 Fig 4 0 4-1 1 Fig 5 0 5-1 1 Fig 6 0 6-1 1 Fig 7 0 7-1 1 Fig 8 0 8-1 1 Fig 9 0 9-1 1 Kits-1 0 Bulk-1 1 I-1 to l-4 0 G-1 to G-3 (G-4 blank) 0 H-1 to H-2 0 I-1 to I-2 0 J-1 to J-4 0 K-1 to K-4 0 L-1 to L-2 0 M-1 1 M-2 to M-4 0 Index-1 0 Index-2 1 Index-3 (Index-4 blank) 0

B Change 1

Page *Change No. No.

Auth. Page (Back blank) 0 Sample 2028 0 Three 2028’s 0 Metric Conversion Chart 0 Back Cover 0

* Zero in this column indicates an original page.

CHANGE HEADQUARTERS

NO. 1 DEPARTMENT OF THE ARMY

WASHINGTON, D.C., 10 NOVEMBER 2006

TECHNICAL MANUAL

OPERATOR’S, UNIT AND DIRECT SUPPORT MAINTENANCE MANUAL

INCLUDING REPAIR PARTS AND SPECIAL TOOLS LIST

FOR

CONTAINER ROLL-IN/OUT PLATFORM (CROP)

MODEL M3

NSN 3990-01-442-2751

MODEL M3A1

NSN 3990-01-450-5671

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

TM 9-3990-260-14&P, 27 JULY 2001, is updated as follows:

1. File this sheet in front of the manual for reference.

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

3. Changes to illustrations are indicated by a vertical line and/or miniature pointing hand adjacent to the changed area.

4. When tables are updated or added, the change bar shall also be placed to the left of the table number and title.

5. Remove old pages and insert new pages as indicated below:

Remove Pages Insert Pages a through f a through f i / (j blank) i / (j blank) A / (B blank) A and B i through iv i through iv 1-1 and 1-2 1-1 and 1-2 1-3 and 1-4 1-3 and 1-4 1-5 and 1-6 1-5 and 1-6 1-7 and 1-8 1-7 and 1-8 1-9 and 1-10 1-9 and 1-9.1 2-5 and 2-6 2-5 and 2-6 2-7 and 2-8 2-7 and 2-8 2-9 and 2-10 2-9 and 2-10 2-19 and 2-20 2-19 and 2-20 2-21 and 2-22 2-21 and 2-22 2-23 and 2-24 2-23 and 2-24 2-25 and 2-26 2-25 and 2-26 2-27 and 2-28 2-27 and 2-28 2-29 and 2-30 2-29 and 2-30

5. Remove old pages and insert new pages as indicated below (Continued):

Remove Pages Insert Pages

2-31 and 2-32 2-31 and 2-32 2-35 and 2-36 2-35 and 2-36 2-39 and 2-40 2-39 and 2-40 2-41 and 2-42 2-41 and 2-41.1 2-47 and 2-48 2-47 and 2-48 2-51 and 2-52 2-51 and 2-52 4-1 and 4-2 4-1 and 4-2 4-3 and 4-4 4-3 and 4-4 4-5 and 4-6 4-5 and 4-6 4-13 and 4-14 4-13 and 4-14 4-15 and 4-16 4-15 and 4-16 4-17 and 4-18 4-17 and 4-18 5-1 and 5-2 5-1 and 5-2 5-3 and 5-4 5-3 and 5-4 5-5 and 5-6 5-5 and 5-6 6-3 and 6-4 6-3 and 6-4 7-37 and 7-38 7-37 and 7-38 9-1 and 9-2 9-1 and 9-2 9-3 and 9-4 9-3 and 9-4 9-5 and 9-6 9-5 and 9-6 9-11 and 9-12 9-11 and 9-12 9-21 and 9-22 9-21 and 9-22 10-1 and 10-2 10-1 and 10-2 10-3 and 10-4 10-3 and 10-4 10-5 and 10-6 10-5 and 10-6 10-7 and 10-8 10-7 and 10-8 A-1 and A-2 A-1 and A-2 B-3 and B-4 B-3 and B-4 C-1 / (C-2 blank) C-1 / (C-2 blank) D-1 / (D-2 blank) D-1 / (D-2 blank) E-1 and E-2 E-1 and E-2 F-5 and F-6 F-5 and F-6 1-1 and Figure 2 Figure 1a / (Back blank) 2-1 and Figure 3 2-1 and Figure 3 3-1 and Figure 4 3-1 and Figure 4 4-1 and Figure 5 4-1 and Figure 5 5-1 and Figure 6 5-1 and Figure 6 6-1 and Figure 7 6-1 and Figure 7 7-1 and Figure 8 7-1 and Figure 8 8-1 and Figure 9 8-1 and Figure 9 9-1 (back blank) 9-1 (back blank) Bulk-1 (back blank) Bulk-1 (back blank) M-1 and M-2 M-1 and M-2 Index-1 and Index-2 Index-1 and Index-2 Front Cover Front Cover*

* Remove and print separately on different color / weight paper

6. Add the following new pages:

1-9.2 and 1-10 2-4.1 / (2-4.2 blank) (2-41.2 blank) / 2-42 5-7 and 5-8 5-9 and 5-10 1-1 and 1-2 (1-3 blank) / Figure 2

By Order of the Secretary of the Army:

PETER J. SCHOOMAKER

General, United States Army

Official: Chief of Staff

JOYCE E. MORROW

Administrative Assistant to the

Secretary of the Army 0617005

DISTRIBUTION: To be distributed in accordance with the initial distribution requirements for IDN: 256662, requirements for TM 9-3990-260-14&P.

Change 1 i

HEADQUARTERS

DEPARTMENT OF THE ARMY

WASHINGTON D.C., 27 July 2001

OPERATOR’S, UNIT, DIRECT SUPPORT AND

GENERAL SUPPORT MAINTENANCE MANUAL

(INCLUDING REPAIR PARTS AND SPECIAL TOOLS LIST)

FOR

CONTAINER ROLL-IN/OUT PLATFORM (CROP) MODEL M3

NSN 3990-01-442-2751

CONTAINER ROLL-IN/OUT PLATFORM (CROP) MODEL M3A1

NSN 3990-01-450-5671

Current as of 27 July 2001

TABLE OF CONTENTS

Page

CHAPTER 1 INTRODUCTION (M3 CROP) ............................................................................................ 1-1

Section I General Information .............................................................................................................. 1-1 Section Il Equipment Description ......................................................................................................... 1-6 Section III Principles of Operation ......................................................................................................... 1-10

CHAPTER 2 OPERATING INSTRUCTIONS (M3 CROP) ....................................................................... 2-1

Section I Operator's Preventive Maintenance Checks and Services (PMCS) ...................................... 2-1 Section II Operation Under Usual Conditions....................................................................................... 2-11

CHAPTER 3 OPERATOR MAINTENANCE INSTRUCTIONS (M3 CROP) ............................................. 3-1

Section I Troubleshooting Procedures.................................................................................................. 3-1 Section II Maintenance Instructions ...................................................................................................... 3-4

DISTRIBUTION RESTRICTION: Approved for public release; distribution is unlimited.

REPORTING ERRORS AND RECOMMENDING IMPROVEMENTS

You can help improve this publication. If you find any mistakes, or if you know of a way to improve the procedures, please let us know. Submit 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 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, fax or e-mail your letter or DA Form 2028 directly to: AMSTA-LC-LPIT/TECH PUBS, TACOM-RI, 1 Rock Island Arsenal, Rock Island, IL 61299-7630. The e-mail address is ROCK-TACOM-TECH-PUBS@conus.army.mil. Fax no. is DSN 793-0726 or Commercial (309) 782-0726.

ii

TABLE OF CONTENTS (CONT)

Page

CHAPTER 4 UNIT MAINTENANCE INSTRUCTIONS (M3 CROP) ......................................................... 4-1

Section I Repair Parts, Special Tools, Test, Measurement and Diagnostic Equipment (TMDE) and Support Equipment .....................................................4-1

Section II Service Upon Receipt ............................................................................................................4-2 Section III Unit Maintenance Preventive Maintenance Checks and Services (PMCS) ..........................4-4 Section IV Unit Maintenance Procedures................................................................................................4-12

CHAPTER 5 DIRECT SUPPORT MAINTENANCE (M3 CROP) ............................................................. 5-1

Section I Repair Parts, Special Tools, Test, Measurement and Diagnostic Equipment (TMDE) and Support Equipment .....................................................5-1

Section II Service Upon Receipt ............................................................................................................5-1 Section III Direct Support Maintenance Procedures ...............................................................................5-2

CHAPTER 6 INTRODUCTION (M3A1 CROP) ........................................................................................ 6-1

Section I General Information...............................................................................................................6-1 Section II Equipment Description ..........................................................................................................6-4 Section III Principles of Operation ..........................................................................................................6-8

CHAPTER 7 OPERATING INSTRUCTIONS (M3A1 CROP) ................................................................... 7-1

Section I Operator's Preventive Maintenance Checks and Services (PMCS).......................................7-1 Section II Operation Under Usual Conditions .......................................................................................7-10

CHAPTER 8 OPERATOR MAINTENANCE INSTRUCTIONS (M3A1 CROP) ......................................... 8-1

Section I Troubleshooting Procedures ..................................................................................................8-1 Section II Maintenance Instructions.......................................................................................................8-2

CHAPTER 9 UNIT MAINTENANCE INSTRUCTIONS (M3A1 CROP) .................................................... 9-1

Section I Repair Parts, Special Tools, Test, Measurement and Diagnostic Equipment (TMDE) and Support Equipment........................................................................9-1

Section II Service Upon Receipt ............................................................................................................9-2 Section III Unit Maintenance Preventive Maintenance Checks and Services (PMCS) ..........................9-4 Section IV Unit Maintenance Procedures................................................................................................9-11

CHAPTER 10 DIRECT SUPPORT MAINTENANCE (M3A1 CROP) ......................................................... 10-1

Section I Repair Parts, Special Tools, Test, Measurement and Diagnostic Equipment (TMDE) and Support Equipment...............................................10-1

Section II Service Upon Receipt ............................................................................................................10-1 Section III Direct Support Maintenance Procedures ...............................................................................10-2

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

APPENDIX B MAINTENANCE ALLOCATION CHART (MAC) ................................................................ B-1

APPENDIX C COMPONENTS OF END ITEM (COEI) AND

BASIC ISSUE ITEMS (BII) LISTS......................................................................................... C-1

Change 1 iii

TABLE OF CONTENTS (CONT)

Page

APPENDIX D ADDITIONAL AUTHORIZATION LIST (AAL) ..........................................................D-1

APPENDIX E EXPENDABLE AND DURABLE ITEMS LIST ...........................................................E-1

APPENDIX F UNIT, DIRECT SUPPORT AND GENERAL SUPPORT

MAINTENANCE REPAIR PARTS AND SPECIAL TOOLS LIST (RPSTL) Page Illus/

Section I Introduction .............................................................................................................. F-1 Section II Repair Parts List ....................................................................................................... F-8 Group 33 Reusable Shipping Container

3301 CROP, M3 and 3301 CROP, M3 (S/N SC09001 and up) ............................... 1-1 1, 1a 3301 CROP, M3, Rear Blocker Assembly and Stowage Door Components ........... 2-1 2 3301 CROP, M3, Center Blocker Assembly ........................................................... 3-1 3 3301 CROP, M3, Twistlock ..................................................................................... 4-1 4 3301 CROP, M3, Data Plates ................................................................................... 5-1 5 3301 CROP, M3A1, Base Assembly and Rear Frame Components ....................... 6-1 6 3301 CROP, M3A1, Front Frame Components ....................................................... 7-1 7 3301 CROP, M3A1, Storage Doors and Twistlock Assembly ................................ 8-1 8 3301 CROP, M3, Data Plates ................................................................................... 9-1 9

Group 94 Repair Kits 9401 CROP, M3A1, Kits ......................................................................................... Kits-1

Group 95 General Use Standardization Parts 9501 CROP, Bulk ..................................................................................................... Bulk-1

Section III Special Tool List (Not Applicable) Section IV National Stock Number Index .................................................................................. I-1

Part Number Index ................................................................................................... I-2

APPENDIX G ILLUSTRATED LIST OF MANUFACTURED ITEMS .............................................G-1

APPENDIX H MANDATORY REPLACEMENT PARTS LIST ......................................................H-1

APPENDIX I TOOL IDENTIFICATION LIST .................................................................................I-1

APPENDIX J M3 CROP LUBRICATION INSTRUCTIONS ............................................................J-1

APPENDIX K M3A1 CROP LUBRICATION INSTRUCTIONS ........................................................K-1

APPENDIX L TORQUE LIMITS ......................................................................................................L-1

APPENDIX M STOWAGE AND SIGN GUIDE .................................................................................M-1 iv

HOW TO USE THIS MANUAL

This manual is designed to help operate and maintain the Container Roll-In/Out Platform (CROP) M3, NSN 3990-01-442- 2751; and Container Roll-In/Out Platform (CROP) M3A1, NSN 3990-01-450-5671. Listed below are some of the features included in this manual to help locate and use the needed information.

• A front cover Table of Contents is provided for quick reference of chapters and appendices that will be used often.

• Warning, caution and note headings, subject headings and other essential information are printed in bold type making them easier to see.

• In addition to text, there are exploded-view illustrations showing how to take a component off and put it back on. Cleaning and inspection criteria are also included where necessary.

• Chapters 1 and 2 (Model M3, CROP), and Chapters 6 and 7 (Model M3A1, CROP) of this manual are directed at the operator of the CROP. These chapters include an overall description and instructions for operation, as well as operator PMCS.

• Chapter 3 (Model M3, CROP), and Chapter 8 (Model M3A1, CROP) of this manual cover Operator Maintenance.

• Chapter 4 (Model M3, CROP), and Chapter 9 (Model M3A1, CROP) of this manual cover Unit Maintenance, including PMCS.

• Chapter 5 (Model M3, CROP), and Chapter 10 (Model M3A1, CROP) of this manual cover Direct Support Maintenance.

• Appendix A covers the References used in this manual.

• Appendix B covers the Maintenance Allocation Chart (MAC).

• Appendix C covers the Components of End Item (COEI) and Basic Issue Items (BII) Lists.

• Appendix D covers the Additional Authorization List (AAL).

• Appendix E covers the Expendable and Durable Items List for the CROP.

• Appendix F covers the Unit and Direct Support Maintenance Repair Parts and Special Tools List (RPSTL) for the CROP.

• Appendix G lists the Manufactured Items.

• Appendix H lists the Mandatory Replacement Parts.

• Appendix I lists the Common Tools, Supplements, and Special Tools/Fixtures.

• Appendix J lists all Lubrication Instructions (Model M3, CROP).

• Appendix K lists all Lubrication Instructions (Model M3A1, CROP).

• Appendix L lists all Common Torque Limits.

• Appendix M is the Stowage and Sign Guide.

• An Alphabetical Index is provided to help locate items in the text.

Follow these guidelines when using this manual:

• The operator must read through this manual and become familiar with the contents before attempting to operate the CROP.

• Read all WARNINGS and CAUTIONS before performing any procedure.

TM 9-3990-260-14&

Change 1 1-1

CHAPTER 1

INTRODUCTION

(M3 CROP)

Para Contents Page

1-1 Scope . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-1 1-2 Corrosion Prevention and Control . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-2 1-3 M3 CROP Equipment Configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-2 1-4 Preparation for Storage or Shipment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-4 1-5 Destruction of Army Material to Prevent Enemy Use . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-4 1-6 Safety, Care, and Handling . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-4 1-7 M3 CROP Warranty Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-4 1-8 Reporting Equipment Improvement Recommendations (EIRs) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-4 1-9 Quality Assurance/Quality Control (QA/QC) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-4 1-10 List of Abbreviations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-5 1-11 M3 CROP Equipment Characteristics, Capabilities, and Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-6 1-12 M3 CROP Location and Description of Major Components . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-8 1-13 M3 CROP Equipment Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-10 1-14 M3 CROP Normal Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-10

Section I. GENERAL INFORMATION

This chapter provides general information, equipment description and principles of operation for both configurations of the Container Roll-In/Out Platform (M3 CROP).

a. Type of Manual. Operation and maintenance manual, including Repair Parts and Special Tools List (RPSTL).

b. Model Number and Equipment Name. The Container Roll-In/Out Platform (CROP) part number is 12468780, Model M3, NSN 3990-01-442-2751. Figures 1-1 and 1-1a illustrate the M3 CROPs in various configurations. M3 CROP serialization (S/N SC09001 and up) identifies the latest model of the M3 CROP.

c. Purpose of Equipment. The M3 CROP is a flat cargo body with a folding front end structure assembly, designed for use with the Palletized Load System (PLS) truck and trailer. The M3 CROP is designed to be loaded on the PLS truck and trailer and in an ISO container using the Load Handling System (LHS). The M3 CROP is capable of being transported by other modes of transportation through the supply distribution system in a stand-alone con-figuration, or in an ISO container.

d. Equipment Specifics. The M3 CROP (S/N SC09001 and up) differs from the original configura-tion in how the handling equipment is conveniently stored on the front of the platform for quick accessibility, the design of the end structure assembly (A-frame) and a rear underneath storage area for the hook arm extension. Functionally, all oper-ations, handling, PMCS, maintenance and repair procedures are basically identical for both versions of the M3 CROP.

Specific tasks that apply only to S/N SC09001 and up are cited in Change 1 to this manual.

1-1. SCOPE.

1-2 Change 1

The M3 CROP has a total service life of 20 years which allows for extended periods of operation in a corrosive environ-ment. A corrosive environment includes exposure to high humidity, salt spray, road-deicing chemicals, gravel, and atmo-spheric contamination. However, because M3 CROP is completely galvanized, no action beyond normal washing and repair of damaged areas is necessary to control corrosion. To prevent moisture accumulation, drain holes are provided on structural and sheet metal areas where necessary. Stowage boxes are provided with drains. Lubricate the M3 CROP according to Appendix J. Clean with high pressure water.

VIEW A

CROP IN STANDARD CONFIGURATION WITH END STRUCTURE IN RAISED

POSITION AND PALLETIZED LOAD SECURED WITH BII WEB STRAPS.

VIEW B

CROP IN PRE-STACKED CONFIGURATION WITH END STRUCTURE IN

HORIZONTAL POSITION AND BLOCKERS IN STOWED POSITIONS.

Figure 1-1. M3 CROP

1-2. CORROSION PREVENTION AND CONTROL.

1-3. M3 CROP EQUIPMENT CONFIGURATION.

1-3

VIEW C

SIX CROPS IN STACKED, RETROGRADE CONFIGURATION.

BOTTOM CROP HAS END STRUCTURE RAISED.

VIEW D

SIX CROPs IN RETROGRADE CONFIGURATION.

POSITIONED IN AN ISO CONTAINER FOR SHIPMENT.

Figure 1-1. M3 CROP (Cont)

1-4 Change 1

Refer to paragraph 2-18 and paragraph 4-4 for storage or shipment instructions for the M3 CROP.

Refer to TM 750-244-6, Procedures for Destruction of Tank-automotive Equipment to Prevent Enemy Use (U.S. Army Tank-automotive and Armaments Command).

Beware of payload movement during normal loading/unloading operations. Ensure web straps, blocker assemblies, and sideboard kit (if so equipped) are correctly installed. The M3 CROP should be loaded on truck or trailer using the Load Handling System (LHS). M3 CROPs should be stacked using a forklift or other material handling equipment. Never walk under an M3 CROP when it is being lifted, loaded or unloaded. The M3 CROP deck is not capable of holding a forklift. Do not drive a forklift on the deck while loading cargo; load from the side.

For information concerning the warranty, contact the U.S. Army Tank-automotive and Armaments Command, ATTN:

AMSTA-LC-CHHE, Warren, MI 48397-5000 or telephone DSN 786-6967 or Area Code (586) 574-6967.

If your M3 CROP 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. Put it on an SF Form 368 (Product Qual-ity Deficiency Report). Mail it to us at: U.S. Army Tank-automotive and Armaments Command, ATTN: AMSTA-TR-E- PQDR, Warren, MI 48397-5000. We will send you a reply. For those with access to the World Wide Web (www), the EIR can be submitted through the Army Electronic Product Support (AEPS) web site. The site is https://aeps.ria.army.mil.

If there are any Quality Assurance/Quality Control problems with the M3 CROP, put the problem on an SF Form 368 (Product Quality Deficiency Report) and mail it to us at: U.S. Army Tank-automotive and Armaments Command, ATTN: AMSTA-TR-E-PQDR, Warren, MI 48397-5000. We will send you a reply. For those with access to the World Wide Web (www), the QDR can be submitted through the Army Electronic Product Support (AEPS) web site. The site is https://aeps.ria.army.mil.

1-4. PREPARATION FOR STORAGE OR SHIPMENT.

1-5. DESTRUCTION OF ARMY MATERIAL TO PREVENT ENEMY USE.

1-6. SAFETY, CARE, AND HANDLING.

1-7 M3 CROP WARRANTY INFORMATION.

1-8. REPORTING EQUIPMENT IMPROVEMENT RECOMMENDATIONS (EIRs).

1-9. QUALITY ASSURANCE/QUALITY CONTROL (QA/QC).

Change 1 1-5

The following abbreviations are used extensively throughout this manual:

AAL Additional Authorization List BII Basic Issue Items BOI Basis of Issue CAGE Contractor and Government Entity COEI Components of End Item CROP Container Roll-In/Out Platform HAE Hook Arm Extension HEMTT Heavy Expanded Mobility Tactical Truck ISO International Standards Organization LHS Load Handling System NSN National Stock Number PLS Palletized Load System PLST Palletized Load System Trailer PMCS Preventive Maintenance Checks and Services SMR Source, Maintenance, and Recoverability S/N Serial Number TIK Trailer Interface Kit TMDE Test, Measurement, and Diagnostic Equipment U/I Unit of Issue U/M Unit of Measure

1-10. LIST OF ABBREVIATIONS.

1-6 Change 1

Section II. EQUIPMENT DESCRIPTION

a. Equipment Characteristics.

(1) The M3 CROP is a welded steel, galvanized, steel-floored, flat cargo body with a folding front end structure assembly for stacking and front and rear blocker assemblies. The M3 CROP is usually loaded and unloaded by the Load Handling System (LHS), but can also be moved by forklift or other material handling equipment capable of handling such loads.

Do not drive a forklift on the M3 CROP deck; doing so exceeds the point load capability of the deck.

(2) A fully loaded M3 CROP can be inserted into an ISO container directly from a PLS truck or by using a forklift. M3 CROP has built-in shoring devices to secure it inside an ISO con-tainer. No additional shoring is required.

(3) M3 CROP has four twistlock aperture plates that allow each stacked M3 CROP to be secured by the M3 CROP directly beneath it. Up to six M3 CROPs can be stacked for movement on a PLS truck or trailer. A stack of six also fits into an ISO container. When stacking M3 CROPs, the lower unit upon which another is to be stacked must have its removable center blocker assembly and two rear blocker assemblies repositioned.

(4) Although M3 CROP twistlocks function similar to ISO twistlocks, M3 CROP twistlocks are not positioned for use as ISO securing mechanisms due to the smaller footprint of the M3 CROP when compared to a Flatrack.

(5) M3 CROPs can be shipped on railcars, on PLS trucks and trailers, HEMTT LHS and on ISO compatible commercial trucks when in ISO containers.

(6) Each M3 CROP is provided with fourteen (14) web straps to allow transport of cargo.

b. Capabilities.

(1) The M3 CROP can be loaded to and from the ground, a loading dock, an ISO container, or

PLS trailer using the PLS truck-mounted LHS. The M3 CROP will accommodate nominal loads of 32,450 lbs (14,719 kg) when loaded in an ISO container or on a PLS truck or trailer.

(2) The M3 CROP is capable of being transported on C-130, C-141, C-5 and C-17 aircraft while secured to a 463L pallet train, while loaded to 36,250 lbs (16,443 kg) maximum gross weight.

(3) The M3 CROP is capable of being sling lifted by a CH-47D helicopter, utilizing a dual point lift, at a gross weight of 25,000 lbs (11,340 kg).

(4) M3 CROPs can be stacked 10 high on a flat surface. This is allowed for storage only.

(5) Six empty M3 CROPs, five with the end structure assembly folded down, can be stacked together and loaded in an ISO container, on the PLS trailer, and on the PLS truck using the

LHS.

(6) M3 CROP can be moved by a forklift with forks that are a minimum of 68 in. (173 cm) in length.

(7) M3 CROP can be carried on a HEMTT LHS (M1120, M1120A2, M1120A2R1). For spe-cific load requirements/restrictions, see HEMTT LHS TM 9-2320-304-14&P.

1-11. M3 CROP EQUIPMENT CHARACTERISTICS, CAPABILITIES, AND FEATURES.

Change 1 1-7

c. Features.

(1) A welded, galvanized, steel frame with a hinged end structure assembly and removable center and rear blocker assemblies. Capable of being stacked vertically and secured by the CROP directly beneath.

(2) Two enclosed, lockable stowage boxes in the rear deck area.

(3) Hinged end structure assembly that lays flat on the deck for stacking.

(4) Side tiedown D-rings (19 per side) of 10,000 lbs (4,536 kg) capacity to secure payloads.

(5) Four multipurpose provision rings, Class 3, 25,000 lbs (11,340 kg), to permit sling lifting by helicopter and tiedown while loaded to 36,250 lbs (16,443 kg) maximum gross weight, on rail cars and trailers. The multipurpose provision rings also accommodate tiedown of vehicles.

(6) Forklift pockets to allow movement of loaded and unloaded M3 CROPs.

(7) Bracing mechanisms to secure M3 CROP inside an ISO container.

(8) Rollers at the rear of the M3 CROP.

(9) Twistlocks at each corner of the M3 CROP for stacking.

(10) Pins for securing end structure assembly in upright position and lowering of end structure assembly to horizontal position.

(11) On the M3 CROP (S/N SC09001 and up), the tools used for raising and lowering the end structure are stored in special locations on the front of the platform for quick accessibility and the Hook Arm Extension can be stored beneath the rear deck of the platform.

1-8

a. End Structure Assembly and Bail Bar. The bail bar (1) on the end structure assembly (2) of the M3 CROP is used as a lifting point for the M3 CROP. The bail bar (1) couples with the LHS hook arm to lift and pull the M3 CROP onto the PLS truck. The entire end structure assembly (2) can be lowered onto the M3 CROP deck to prepare the M3 CROP for unloaded stacking. When stacked, the end structure assembly (2) fits inside the rails (3) of the M3 CROP above it, thus allowing M3 CROPs to be stacked vertically.

b. Rails. The M3 CROP rails (3), located on the bottom of the M3 CROP, have dinlocks which mate with locking plates on the PLS truck and trailer to secure the M3 CROP for road and rail operations.

c. End Structure Assembly Hinge. Two tapered, threaded, front pins (4) with hex nuts, lock washers, and two straight, threaded, rear pins (5) with hex nuts and lock washers are provided as an integral part of the end structure assembly (2). The pins (4 and 5) are used to secure the end structure assembly (2) in the upright position for normal use and allow the end structure assembly (2) to be folded in the horizontal position for stacking.

d. Bracing Mechanisms. Bracing mechanisms (6) used to brace the M3 CROP inside an ISO con-tainer are located at the two front corners. No further shoring is required to secure the M3 CROP inside an ISO container.

1-12. M3 CROP LOCATION AND DESCRIPTION OF MAJOR COMPONENTS.

1-9

e. Twistlocks. Twistlocks (7) are located at each corner and allow six empty M3 CROPs to be stacked and locked together. Each M3 CROP is secured by the twistlocks (7) of the M3 CROP directly beneath it.

f. Stowage Boxes. Two large, lockable stowage boxes (8) are located in the deck toward the rear of the M3 CROP. The lids on the stowage boxes (8) are of the same material as the deck. The deck is not capable of holding a forklift; the point load of the tires exceed the deck point load capability.

g. Rollers. Rollers (9) are located at the bottom rear of the M3 CROP. Rollers (9) are used for load-ing/unloading M3 CROP onto the PLS truck and trailer, and into and out of an ISO container. Rollers (9) can be replaced if damaged.

h. Tiedown Rings. A total of 38 10,000 lbs (4,536 kg) capacity tiedown rings (10) are provided (19 on each side) to secure payloads or to secure M3 CROP for modes of shipping other than stacked in an ISO con-tainer, or on a PLS truck or trailer. Additionally, four 25,000 lbs (11,340 kg) capacity multipurpose provision rings

(11) are provided (two on each end) for sling lifting and securing on railcars.

i. Blocker Assemblies. The M3 CROP has five blocker assemblies. The left and right front blocker assemblies (12) are welded in place and cannot be removed. The center blocker (13) and two rear blocker assemblies (14) must be positioned to the stowed location to allow M3 CROPs to be stacked.

1-10 Change 1

j. End Structure Assembly and Bail Bar. The bail bar (1) on the end structure…