Gentex HGU-84/P Скачать руководство пользователя страница 36 | Manualshive

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5. In stall the re place ment swivel as sem bly with the cupped side of the con cave washer

against the out side of the hel met shell.

6. Using ad he sive MIL-A-5540, re at tach the pile fas tener to the hel met shell.

7. Re in stall the earcup.

8. Check earseal com pres sion and hel met fit in ac cor dance with para graph 2-2.

3-15

Fig ure 3-15. Boom Swivel As sem bly

SWIVEL ASSEMBLY

SHAFT

FLAT WASHER

CONCAVE WASHER

WASHER (INSIDE HELMET)

SCREW

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Содержание HGU-84/P

Страница 1: ...OPERATION AND MAINTENANCE INSTRUCTIONS WITH ILLUSTRATED PARTS LIST HGU 84 P COMMERCIAL HELMET ASSEMBLY GENTEX CORPORATION CARBONDALE PA JUNE 2001 2001 GENTEX Corporation...

Страница 2: ...E VISOR ASSEMBLY 1 4 1 3 7 DUAL VISOR ASSEMBLY WITH QUICK DISCONNECT 1 4 1 3 8 LIGHTWEIGHT VISORS 1 4 CHAPTER 2 PREPARATION FOR USE 2 1 SIZING 2 1 2 2 HELMET FITTING 2 2 2 3 FITTING OF TPL ASSEMBLY 2...

Страница 3: ...lacement of Boom Swivel Assembly 3 14 3 4 2 9 Replacement of Optional Bayonet Receiver Assembly 3 16 3 4 2 10 Replacement of Energy Absorbing Liner 3 18 3 4 2 11 Replacement of Dual Visor Assembly 3 2...

Страница 4: ...k if required 1 2 SCOPE This manual contains a description of the HGU 84 P Commercial Helmet Assembly as well as the sizing fitting and maintenance instructions required to outfit aircrew members succ...

Страница 5: ...hold an oxygen mask 1 3 3 THERMOPLASTIC LINER TPL ASSEMBLY Figure 1 3 The TPL assembly used in conjunction with the energy absorbing liner installed in the helmet shell assembly pro vides helmet stab...

Страница 6: ...ug comfortable fit with maximum helmet stability Clamp assemblies on the nape straps allow adjustment of the nape area without added strain on the chin strap The nylon webbing nape straps feature a le...

Страница 7: ...sing has a quick disconnect for ANVIS night vision goggles Before you can use the quick disconnect you must attach the ANVIS modification kit to the ANVIS mount This procedure begins on Page 2 13 1 3...

Страница 8: ...ded only as general guidance Because of the wide variation in head shapes likely to be encountered it is not possible to present detailed guidance The helmet is designed to provide lightweight head pr...

Страница 9: ...oward the rear and down onto the head Ensure that the edgeroll is positioned just out of the aircrew member s line of sight as the aircrew member looks upward 3 Check earcup position ensuring that the...

Страница 10: ...he right side as worn and fasten the snap 8 Have the aircrew member fasten the chinstrap as follows Figure 2 4 a Feed the end of the chinstrap through the D rings on the left side of the helmet as wor...

Страница 11: ...ired position by releasing the knob Single visor assembly Rotate the visor lock counterclockwise until the visor can be moved Raise or lower the visor by sliding the lock up or down Secure the visor i...

Страница 12: ...8 mm left and right from the center and approximately 1 4 inch 6 3 mm from the bottom edges 2 Ensure the TPL cover assembly is secured to the TPL preformed layer assembly with two approxi mately 1 x 2...

Страница 13: ...o plastic layers Having fewer than two layers will reduce helmet stability which could obstruct vision and reduce bump protection b Remove layers from the TPL assembly one at a time beginning with the...

Страница 14: ...timing device for 10 minutes NOTE Heating characteristics of ovens vary This should be taken into account during the TPL heating process The time stated above is for reference only and is not a rule e...

Страница 15: ...tered in the earcup assemblies and eye offset is correct See Step 5 Maintain this pressure for 5 minutes i Release downward pressure at the end of 5 minutes and check helmet fit If required steps a th...

Страница 16: ...operly fitted helmet 2 Insert each oxygen mask bayonet into a jaw receiver to the third locking position The projections on the jaw receiver should be positioned toward the tip of the bayonet 3 Referr...

Страница 17: ...Remove the earcup assembly on one side Referring to Figure 2 10 pull back the earcup pile fastener fabric inside the helmet shell on the same side Using a 25 drill bit drill the marked hole locations...

Страница 18: ...at the jaw receiver projections point to the rear of the helmet 8 Tighten all screws so that the jaw receivers and spacers are firmly attached to the helmet 9 Cement the earcup pile fastener fabric to...

Страница 19: ...igure 2 12 install the clear or neutral visor by stretching the end of the strap slightly past the helmet snap and fastening the visor snap to the helmet snap from front to back Repeat for the other s...

Страница 20: ...es are aligned and the plate is flush with the top and bottom of the rear of the mount Ensure that the wires extending from the rear of the mount are aligned in the slots in the mount to prevent crush...

Страница 21: ...or the housing 7 Attach pressure sensitive pile fastener to the center rear of the helmet for the ANVIS battery pack as shown in Figure 2 15 8 To remove the mount from the helmet depress the release t...

Страница 22: ...nspection is a visual inspection performed by the aircrew member before after each flight The aircrew member will check the general overall condition of the helmet assembly Refer to paragraph 3 2 2 NO...

Страница 23: ...ks 4 Inspect edgeroll for rips tears splits or loosening from helmet shell 5 Inspect communication cables and cordsets for cut split or abraded insulation 6 Inspect earcups for proper installation in...

Страница 24: ...Mild abrasive scouring powder may be used to remove stains or scuff marks b Wipe helmet shell assembly clean using a water dampened cloth to remove detergents 2 Chin Nape Strap Assembly and Fitting Pa...

Страница 25: ...ith a soft lint free cloth dampened with a 70 percent isopropyl alcohol solution or equal 3 4 SERVICING THE HELMET 3 4 1 INSPECTION UPON RECEIPT Once the basic helmet shell assembly and components are...

Страница 26: ...cup Assembly 3 4 2 2 3 Replacement of Earphone Holder 3 4 2 3 4 Replacement of Earseal 3 4 2 4 5 Replacement of Chin Nape Strap Assembly 3 4 2 5 6 Replacement of Chin Strap and Chinpad 3 4 2 6 7 Repla...

Страница 27: ...valent 1 Remove TPL from helmet shell assembly 2 Separate TPL cover assembly from layer assembly 3 Discard defective assembly 4 Remove any double sided tape from serviceable component 5 Referring to F...

Страница 28: ...ve the earseal by carefully stretching it away from the lip of the earcup shell 3 Remove the earphone holder from the earcup shell and the earphone from the earphone holder 4 Referring to Figure 3 3 l...

Страница 29: ...o the helmet shell Smooth the earphone holder inside the earcup to eliminate bunching 11 Reinstall the earseal by carefully stretching it over the lip of the earcup shell 12 Reattach the earcup assemb...

Страница 30: ...older 4 Replace the earphone holder 5 Insert the earphone into the replacement earphone holder 6 With the slot opening positioned toward the earcup grommet insert the earphone holder with the enclosed...

Страница 31: ...erring to Figure 3 8 remove the earseal by carefully stretching it away from the lip of the earcup shell 3 Replace the earseal 4 Install the earseal by carefully stretching it over the lip of the earc...

Страница 32: ...c Remove both earcup assemblies from the helmet d Remove the TPL from the helmet e If replacing the nape straps remove the clamps from the nape straps and set aside f Remove the screws washers and T...

Страница 33: ...mber preference d Pass the double D ring nape strap through the nape pad from lower right to upper left if installed on right or from lower left to upper right if in stalled on left NOTE Before instal...

Страница 34: ...the chinpad is tacked to the chinstrap cut the tacking d Slide chin pad off chin strap e Discard unserviceable components 2 Reassemble the chin strap assembly or chin pad as follows NOTE When reinsta...

Страница 35: ...m Swivel Assembly MATERIALS REQUIRED QUANTITY DESCRIPTION REFERENCE NUMBER 1 Boom Swivel 78A4047 1 Adhesive MIL A 5540 1 On the side of the helmet to which the boom swivel assembly is mounted pull the...

Страница 36: ...f the helmet shell 6 Using adhesive MIL A 5540 reattach the pile fastener to the helmet shell 7 Reinstall the earcup 8 Check earseal compression and helmet fit in accordance with paragraph 2 2 3 15 Fi...

Страница 37: ...the earcup from the side of the helmet where the bayonet receiver is to be replaced b Pull pile fastener fabric inside helmet shell assembly away from area where earcup assembly was removed c Remove t...

Страница 38: ...hers through the backplate from the inside of the helmet shell assembly Attach jaw receiver and spacer to outside of the helmet shell assembly Ensure that projections on jaw receiver are pointing towa...

Страница 39: ...e the energy absorbing liner b Detach the right and left earcup assemblies from the pile fastener tape in helmet shell earcup cavity and position clear of work area c Remove the panhead screws flat wa...

Страница 40: ...er into place ensuring that the rear edgeroll is not pinched or curled under the liner d On inside surface of the energy absorbing liner install front and rear hook fastener tapes All four fasteners s...

Страница 41: ...ng etc to be replaced see Figure 4 9 1 Remove four screws two screws each side from dual visor assembly and carefully remove assembly from helmet NOTE Prior to disassembling the dual visor assembly no...

Страница 42: ...OUSING TRACKS SCREWS TWO EACH SIDE OUTER VISOR INNER VISOR OUTER VISOR LOCK ASSEMBLY SPACER NOTE In the exploded view above the visor lock is shown on the left side as worn The lock is normally instal...

Страница 43: ...ote the order of parts you will assemble the dual visor in the same manner 1 Rotate the visor lock assembly a quarter turn so that the visor key will clear the visor cutout and the housing slot lift t...

Страница 44: ...g without the visor align them over the posts protruding up ward from the helmet Re attach these parts to the helmet shell with the six screws 7 Slide the visor into the tracks Align the visor lock ov...

Страница 45: ...ter turn so that the visor key will clear the visor cutout and the housing slot lift the lock assembly away from the visor assembly 2 Align the replacement visor lock assembly over the housing slot in...

Страница 46: ...y a quarter turn so that the visor key will clear the visor cutout and the housing slot lift the lock assembly away from the visor assembly 2 Slide the visor out of the tracks 3 Slide the replacement...

Страница 47: ...visor strap at the tab 2 Pull the strap away from the helmet 3 Repeat for the other strap 4 Referring to Figure 3 25 install the new visor by fastening the visor snap to the inner visor snap from fro...

Страница 48: ...arcup assembly 3 Remove the hardware attaching the snap fastener to the helmet shell NOTE Before reinstalling screws apply a small amount of RTV to the ends of each screw 4 Install the replacement sna...

Страница 49: ...ration All other numbers which are preceded by hyphens for example 1 2 and so forth correspond to index numbers numbered callouts on the associated illustration 4 2 2 Part Number Column The Part Numbe...

Страница 50: ...4 2 1 3 1 4 2 5 6 Figure 4 1 HGU 84 P Commercial Helmet Assembly...

Страница 51: ...e Large See Figure 4 2 for breakdown 1 B E HELMET SHELL ASSY White X Large See Figure 4 2 for breakdown 1 C F HELMET SHELL ASSY White X Large Wide See Figure 4 2 for breakdown 1 J 2 HELMET SHELL Gray...

Страница 52: ...F B E HELMET SHELL ASSY X Large REF C F HELMET SHELL ASSY X Large Wide REF HELMET SHELL Medium Not available as an assembly REF G HELMET SHELL Large Not available as an assembly REF H HELMET SHELL X L...

Страница 53: ...G 90C7864 2 CHIN NAPE STRAP ASSY Large See Figure 4 5 for breakdown 1 B E H 90C7864 3 CHIN NAPE STRAP ASSY X Large See Figure 4 5 for breakdown 1 C F I 90C7864 4 CHIN NAPE STRAP ASSY X Large Wide See...

Страница 54: ...THERMOPLASTIC LINER ASSY Large REF B E H 85D7087 3P THERMOPLASTIC LINER ASSY X Large REF C F I 1 85D7088 1 COVER ASSEMBLY Medium 1 A D G 85D7088 2 COVER ASSEMBLY Large 1 B E H 85D7088 3 COVER ASSEMBL...

Страница 55: ...TS PER ASSEMBLY USABLE ON CODE 4 4 90C7885 EARCUP ASSEMBLY REF 90C7886 1 EARCUP Left hand Not Shown 1 1 90C7886 2 EARCUP Right hand 1 2 79C4401 1 EARPHONE HOLDER 2 3 88C7589 EARSEAL 2 4 67A1809 2 GROM...

Страница 56: ...4 8 1 2 3 4 5 6 11 11 7 8 9 10 HELMET SHELL REF NAPESTRAP NAPESTRAP PAD Figure 4 5 Chin Nape Strap Assembly...

Страница 57: ...STRAP PAD Black X Large 1 C F I 90D7865 4 NAPE STRAP PAD Black X Large Wide 1 C F I 3 90B7866 1 NAPE STRAP Double D ring Medium 1 A D G 90B7866 2 NAPE STRAP Double D ring Large X Large 1 B C E F H I 9...

Страница 58: ...4 10 1 3 2 13 SEE DETAIL 5 7 12 SEE DETAIL 6 8 13 12 DETAIL 9 10 4 11 Figure 4 6 Dual Visor Assembly with Quick Disconnect...

Страница 59: ...WER TRACK Left Hand 1 6 90D7934 2 LOWER TRACK Right Hand 1 7 90C7935 1 UPPER TRACK Left Hand 1 8 90C7935 2 UPPER TRACK Right Hand 1 9 90C8029 1 DETENT SPACER Left Hand 1 10 90C8029 2 DETENT SPACER Rig...

Страница 60: ...4 12 Figure 4 7 Single Visor Assembly 1 2 3 4 6 5 7 8 9...

Страница 61: ...S Neutral Medium 1 D 79D4406 1 VISOR LENS Neutral Large 1 E F 3 79D4405 2 VISOR LENS Clear Medium Optional 1 D 79D4406 2 VISOR LENS Clear Large Optional 1 E F 4 79B4397 1 SPACER Inner Medium 2 D 79B43...

Страница 62: ...PUBLICATION TP0131 REV 2 JUNE 2001...

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