3M Ultra Light Weight Ballistic Bump Helmet N49 Operating instructions

Brand: 3M

Model: Ultra Light Weight Ballistic Bump Helmet N49

Type: Operating instructions

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Ultra Light Weight

Ballistic Bump Helmet N49

User Manual

User Manual 3M

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Ultra Light Weight Ballistic Bump Helmet N49

Important Safety Information

Please read, understand, and follow all safety information contained

in this User Manual prior to the use of this device.

Retain these instructions for future reference.

The 3M

™

Ultra Light Weight Ballistic Bump Helmet N49 provides multiuse

ballistic protection at a signicant weight reduction over conventional

combat helmets, for improved mobility and reduced fatigue.

Physical Properties

(Not for specication purposes)

Size Available M, L, XL

Finished Shell <600 g (with edge trim and paint)

Colors Black, Camo Green

User Manual 3M

™

Ultra Light Weight Ballistic Bump Helmet N49

The 3M

™

Ultra Light Weight Ballistic Bump Helmet N49 provides protection

from the threats listed in the specication. Misuse or failure to follow

warnings and user Instructions may result in serious personal injury or death.

Only qualied and trained operators should use this helmet. Many factors

uniquely within the user's knowledge and control can aect the use and

performance of the helmet. The user is solely responsible for evaluating the

helmet and determining whether the helmet is suitable for user's intended

conditions of use.

Warning

Product is export controlled under the U.S. Export Administration Regulations (EAR).

Intended Use

The 3M

™

Ultra Light Weight Ballistic Bump Helmet N49 is designed to

help provide head protection against certain ballistic threats and to help

prevent trauma to the head against certain blunt impacts when used

with the D3O TRUST Impact Absorbing Pad System.

The helmet is tested in accordance to:

• NIJ Standard 0106.01 for Ballistic Helmets with NIJ 0108.01 IIIA

Ballistic threats.

• STANAG 2920 – .22 Caliber – 17 gr FSP.

• AR/PD 10-02 (Latest version) for blunt impact protection.

On helmets with D3O Trust Pad System.

User Manual 3M

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Ultra Light Weight Ballistic Bump Helmet N49

Helmet Sizing

It is important that the helmet is t properly

to achieve the correct protection level for the wearer.

Measuring to determine shell size:

1. User must be seated in an upright position.

2. Measure the maximum head circumference

(Figure 1) by pressing the tape just above the bony

eyebrow ridge of the forehead and above both ears.

Tape measure must be pulled tightly.

3. Using the following table, select the helmet

shell size.

Helmet Shell Head Circumference

Medium Helmet Shell Up to 22.5 inches (573 mm)

Large Helmet Shell

From 22.5 inches (573 mm)

up to 23.5 inches (597 mm)

Extra-Large Helmet Shell Over 23.5 inches (597 mm)

Helmet must t properly. If you experience t problems, tightness or

looseness, or helmet prole is too high or too low, refer to Fitting Guidelines.

Failure to observe this precaution could result in serious injury or death

to personnel.

Warning

Figure 1

User Manual 3M

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Ultra Light Weight Ballistic Bump Helmet N49

Retention System Adjustment/Adjusting Fit:

1. Loosen all four (4) cam buckles (Items 1 in Figure 2) by pulling up on

the locking tab. See Figure 3.

2. With cam buckles open, fully loosen straps by sliding buckles toward

the helmet.

Figure 2 Figure 3

➊

User Manual 3M

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Ultra Light Weight Ballistic Bump Helmet N49

Helmet must t properly. If you experience t problems, tightness or

looseness, or helmet prole is too high or too low, refer to Fitting Guidelines.

Failure to observe this precaution could result in serious injury or death

to personnel.

Warning

Retention System Adjustment/Adjusting Fit: (continued)

3. Look at the back of your helmet and identify which retention

system your helmet has. See Figure 4. Note this for the

instructions that follow.

X-Back Retention System

Dial Adjust Retention System

Figure 4

User Manual 3M

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Ultra Light Weight Ballistic Bump Helmet N49

X-Back Retention System

1. Place the helmet on operator’s head and buckle chin strap with chin

in the chin cup shown in Figure 6.

2. Slide the cam buckles on the lower webbing straps forward or

backward until snug and then close the locking tab on the cam

buckles.

3. Slide the cam buckles on the temple straps up or down until snug

and the helmet is aligned as shown in Figure 8.

When satised with orientation and t, close the locking tabs on the

cam buckles.

5. Ensure helmet is stable and make minor adjustments as needed.

Figure 6

Figure 7

If you pull too tightly on any strap while putting on the helmet, or if you don’t

position helmet on head and hold in place with one hand on top of helmet

for initial adjustment, the helmet may become uncomfortable and tilted on

your head and chin cup may become uncentered. Failure to observe this

precaution could result in serious injury or death to personnel.

Warning

➊

User Manual 3M

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Ultra Light Weight Ballistic Bump Helmet N49

Dial Adjust Retention System

1. Release the adjustment dial lock by pulling outward on the dial

(Figure 7 item 1).

2. Place the helmet on operator’s head and buckle chin strap with chin in

the chin cup shown in Figure 6.

3. Re-engage the adjustment dial locking/ratchet mechanism by pushing

inward on the adjustment dial.

4. Turn the adjustment dial until the helmet ts snug on the head. Correct

t should be comfortable, but tight enough to hold helmet in place

when head is shaken slightly.

5. Slide the cam buckles on the lower webbing straps forward or

backward until snug and then close the locking tab on the cam buckles.

6. Slide the cam buckles on the temple straps up or down until snug and

the helmet is aligned as shown in Figure 8.

7. When satised with orientation and t, close the locking tabs on the

cam buckles.

8. Ensure helmet is stable and make minor adjustments as needed.

Figure 8

Retention NOT adjusted

correctly. Helmet Edge

Trim at Ear location is

NOT Horizontal.

Retention adjusted

correctly. Helmet Edge

Trim at Ear location IS

Horizontal.

Retention NOT adjusted

correctly. Helmet Edge

Trim at Ear location is

NOT Horizontal.

User Manual 3M

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Ultra Light Weight Ballistic Bump Helmet N49

Care and Cleaning

Clean as needed after use.

Helmet Shell

1. Clean with mild soap and water using a soft brush or cloth.

2. Rinse thoroughly in clean water.

3. Allow to air dry either indoors or in shade, away from heat sources.

Suspension (pads) and Retention Systems

1. Remove pads and retention system from helmet

(see removal and installation instructions on following page).

2. Hand wash with a mild detergent.

3. Allow to air dry either indoors or in shade, away from heat sources.

Figure 9

A small brush is useful in

removing dirt from the hook disks

(item 1 in Figure 9) on the inside of

the shell. Keeping the hook and

loop clean will help to maintain

the ability of the pads to stick to

the inside of the helmet.

Recommendation

➊

User Manual 3M

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Ultra Light Weight Ballistic Bump Helmet N49

Inspection for Damage

• Inspect helmet prior to and following each use.

• Inspect the exterior of the shell for any visual dents. If any dents

are found, remove the suspension pads and retention system and

inspect the interior of the shell for a corresponding inside dent. If

a corresponding interior dent is identied the helmet should be

replaced. Failure to observe this precaution could result in serious

injury or death to personnel.

• Inspect the exterior of the helmet for any major scratches or gouges

in the surface of the helmet. Any scratch or gouge that exposes

white bers would indicate the need for helmet replacement. Failure

to observe this precaution could result in serious injury or death to

personnel.

• Inspect the hook and pile attachment pads for the suspension system,

retention system and exterior pile pads for a secure bond to the

helmet surface. Peeling or delaminating pads should be replaced with

new pads.

• Inspect the screws that attach the accessory side rail to the helmet.

Ensure that they are snug and have not had the threads stripped.

• Inspect the NVG shroud to ensure it is tight and secure to the helmet.

Failure to inspect the helmet, identify problems and take corrective

action, as described in the section, "Inspection for Damage," could

result in serious injury or death to personnel.

Warning

User Manual 3M

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Ultra Light Weight Ballistic Bump Helmet N49

Removal and Installation of Suspension System Pads

Removal: The retention pads are held in place with hook and loop

fastener. They can be removed from the helmet by slowly peeling the

edges of the pad up and away from the helmet.

Installation: (refer to Figure 10 for pad placement)

1. Place round center pad centered in the “crown” of the helmet with

the loop (fuzzy) side toward the hook coins.

2. Install remaining pads with the larger rectangular pads at the front

and rear of the helmet.

3. Place the helmet on head and check for t and make any minor pad

placement adjustments necessary for comfort.

4. When satised with t and comfort rmly push the pads down onto

the hook disks to ensure complete engagement of the hood and loop

fastener.

Figure 10

➊ ➋

➍

➌

All 7 suspension pads must be

in place in the helmet. Wearing

the helmet with missing

suspension pads severely

compromises the ability to

protect the wearer. Failure to

observe this precaution could

result in serious injury or death

to personnel.

Warning

User Manual 3M

™

Ultra Light Weight Ballistic Bump Helmet N49

Removal and Installation of Retention System

Removal: The retention system is held in place with plastic anchor clips

that insert into slots on the edge trim of the helmet. See items 1-4 in

Figure 10 for locations.

1. Remove the front and side suspension system pads as shown on the

previous page.

2. With a needle nose or long nose pliers, squeeze the tabs on the

anchor clip while pulling the clip up and out of the slot to remove.

See Figure 11. (Repeat on remaining 3 clips.)

3. If your helmet has a Team Wendy Cam-Fit

™

retention system

(see page 4 for identication of retention system) remove the front

retention plastic strap by slowly peeling it up and away from the hook

disks holding it on the helmet.

Installation: If not already in place, install the round center suspension

pad as described on the previous page.

Figure 11

User Manual 3M

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Ultra Light Weight Ballistic Bump Helmet N49

Removal and Installation of Retention System (continued)

1. Place helmet upside down on your lap while seated and lay the

retention system across the helmet to eliminate strap twisting.

Orient the nape pad toward the back of the helmet.

If your helmet has a 3M X-Back retention system, proceed to Step 4.

2. Place the front retention plastic strap on the front interior of the helmet

while keeping it centered on the helmet. The strap should be placed

such that it just covers the edges of the hook coins. See Figure 12.

3. Once in place and satised with the positioning, ensure the complete

engagement of the hook and loop fastener by rmly pushing in the

strap down in the area of the hook coins.

4. Insert the two rear anchor clips into the rear slots and push rmly in

until you hear an audible click.

5. Repeat Step 4 for the remaining two front anchor clips. Your helmet

should look like Figure 13 when complete.

6. Reinstall remaining suspension system pads as described in the

section on the previous page.

Figure 12 Figure 13

User Manual 3M

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Ultra Light Weight Ballistic Bump Helmet N49

Inserting and Removing the Picatinny Adapter

from Accessory Rail

1. To install the Picatinny Adaptor, squeeze the locking tabs (Items 1 in

Figure 14) toward each other.

2. While continuing to squeeze the locking tabs together, slide the

adaptor onto dovetail of the accessory rail to its approximate desired

position. (See Figure 15)

3. Release the locking tabs and slide the Picatinny adaptor slightly

forward or backward until it locks into place.

4. To remove the adaptor, squeeze the locking tabs together to release

the adaptor and slide the adaptor o of the accessory rail.

Figure 15Figure 14

➊

You may nd it easier to release the adaptor locking tabs by squeezing

one end rst and then adding the other end, rather than trying to

squeeze both tabs in simultaneously.

Tip

User Manual 3M

™

Ultra Light Weight Ballistic Bump Helmet N49

Figure 16

NVG Shroud Removal and Replacement

1. Using a hex wrench, loosen the t-nuts to remove the 3 screws holding

the shroud in place. Retain screws, washers and t-nuts. (See Figure 16)

2. To replace, insert t-nuts into face of shroud.

3. Place one washer on each screw. Thread screws from inside the

helmet into the t-nuts and tighten.

4. If screws must be replaced, use screws the same length and

thickness as the originals in order to avoid damaging the helmet.

User Manual 3M

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Ultra Light Weight Ballistic Bump Helmet N49

Figure 17

Accessory Rail Replacement

1. Loosen the two self tapping screws holding the rail to the helmet.

(See Figure 17)

2. Remove the rail by lifting the rail up and away from the helmet to

clear the tabs on the helmets edge trim.

3. Insert new rail under the tabs at the front and rear of helmet.

4. Replace screws, taking care not to over-tighten.

Manufactured by Ceradyne Inc., a 3M company.

Warranty, Limited Remedy, and Disclaimer: Many factors beyond Ceradyne’s control and uniquely

within user’s knowledge and control can aect the use and performance of a Ceradyne product in a

particular application. User is solely responsible for evaluating the Ceradyne product and determining

whether it is t for a particular purpose and suitable for user’s method of application. User is solely

responsible for evaluating third party intellectual property rights and for ensuring that user’s use of

Ceradyne product in user’s product or process does not violate any third party intellectual property

rights. Unless a dierent warranty is specically stated in the applicable product literature or

packaging insert, Ceradyne warrants that each Ceradyne product meets the applicable Ceradyne

product specication at the time Ceradyne ships the product. CERADYNE MAKES NO OTHER

WARRANTIES OR CONDITIONS, EXPRESS OR IMPLIED, INCLUDING, BUT NOT LIMITED TO, ANY

IMPLIED WARRANTY OR CONDITION OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR

PURPOSE OR ANY IMPLIED WARRANTY OF NON-INFRINGEMENT OR ANY IMPLIED WARRANTY

OR CONDITION ARISING OUT OF A COURSE OF DEALING, CUSTOM OR USAGE OF TRADE. If

the Ceradyne product does not conform to this warranty, then the sole and exclusive remedy is, at

Ceradyne’s option, replacement of the Ceradyne product or refund of the purchase price.

Limitation of Liability: Except where prohibited by law, Ceradyne will not be liable for any loss

or damages arising from the Ceradyne product, whether direct, indirect, special, incidental or

consequential, regardless of the legal theory asserted, including warranty, contract, negligence or

strict liability.

Technical Information: Technical information, recommendations, and other statements contained in

this document or provided by Ceradyne personnel are based on tests or experience that Ceradyne

believes are reliable, but the accuracy or completeness of such information is not guaranteed. Such

information is intended for persons with knowledge and technical skills sucient to assess and

apply their own informed judgment to the information. No license under any Ceradyne or third party

intellectual property rights is granted or implied with this information.

Export Control: The Ceradyne product(s) listed here may be controlled commodities under applicable

U.S. export control laws and regulations, including, but not limited to, the U.S. International Trac in

Arms Regulations (ITAR) and the Export Administration Regulations (EAR). These laws and regulations

may, among other things, prohibit the export and/or reexport of controlled product(s) to any or all

locations outside of the United States without prior U.S. Government export authorization, the sharing

of export controlled technical data and services with those anywhere who are not U.S. citizens or U.S.

permanent residents, dealings with U.S. Government, United Nations and other "Restricted Parties,"

and proliferation activities including those that further nuclear, chemical, or biological warfare, missile

stockpiling/use, or the use of rockets or unmanned aerial vehicle systems. Ceradyne and purchasers or

prospective purchasers of the Ceradyne product(s) shall comply with all applicable export control laws

and regulations, which may require obtaining and maintaining applicable export control authorization

or licenses, and understand that the ability of a party to obtain or maintain such authorization or license

is not guaranteed. The exporter of record has the sole responsibility to determine whether the export

or subsequent reexport of the Ceradyne product(s) requires export authorization. An explicit condition

to Ceradyne selling or making available the Ceradyne product(s) is the customer's agreement to comply

with all applicable trade compliance laws and regulations.

User Manual 3M

™

Ultra Light Weight Ballistic Bump Helmet N49

User Manual 3M

™

Ultra Light Weight Ballistic Bump Helmet N49

User Manual 3M

™

Ultra Light Weight Ballistic Bump Helmet N49

3M is a trademark of 3M Company.

Cam-Fit is a trademark of Team Wendy.

D3O is a trademark of D3O Lab.

Please recycle. Printed in USA.

Issued: 2/7 12046HB

98-0050-0056-1 Rev. B

Ceradyne, Inc., a 3M company

3M Center 220-9E-02

St. Paul, MN 55144-1000

www.3M.com/Defense

User Manual 3M

™

Ultra Light Weight Ballistic Bump Helmet N49

3M Ultra Light Weight Ballistic Bump Helmet N49 Operating instructions

3M Ultra Light Weight Ballistic Bump Helmet N49 Operating instructions

3M Ultra Light Weight Ballistic Bump Helmet N49 Operating instructions

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