scottermac Posted June 22, 2017 Share #1 Posted June 22, 2017 I bought a SPH-4 recently and the ear cups are shot. I have replacements inbound. I was wondering whats the best way to attach the speakers inside the cups and the best way to seuce the foam inserts. What type of glue would you recommend? Link to comment Share on other sites More sharing options...
72psb Posted June 22, 2017 Share #2 Posted June 22, 2017 The foam is pocketed and the speaker just lays in it.The foam will stay in by itself without glue.There are plenty of drawings showing the order of things. Good luck. Oh,what does seuce mean? Link to comment Share on other sites More sharing options...
phantomfixer Posted June 22, 2017 Share #3 Posted June 22, 2017 several flight helmet sites sell the foam kits...Gibson and Barnes for one site... Link to comment Share on other sites More sharing options...
scottermac Posted June 22, 2017 Author Share #4 Posted June 22, 2017 'seuce' was a typo on my part. I meant to say 'secure'. phantomfixer, I found a few flight helmet sites online. Infact all my replacement pieces should be here today. Link to comment Share on other sites More sharing options...
MattS Posted June 22, 2017 Share #5 Posted June 22, 2017 I worked on SPH-4s and IHADSS helmets in the army, no glue required (or recommended) for the earcup pads, and the foam holds the speakers in place. I may still have a SPH-4 maintenance manual somewhere. Link to comment Share on other sites More sharing options...
scottermac Posted June 23, 2017 Author Share #6 Posted June 23, 2017 I worked on SPH-4s and IHADSS helmets in the army, no glue required (or recommended) for the earcup pads, and the foam holds the speakers in place. I may still have a SPH-4 maintenance manual somewhere. Is it just one piece of foam per side? Link to comment Share on other sites More sharing options...
MattS Posted June 23, 2017 Share #7 Posted June 23, 2017 Two pieces. TM 1-8415-215-12&Pc. Retention Assembly (Figure 1-3). The yoke-style retention assembly minimizes forward rotation of the helmet and reduces chinstrap stretch during use, thus providing a high level of protection. This assembly consists of V-shaped straps (1) for vertical earcup adjustment, a rear hanger tab (2) for vertical adjustment of the nape area, an adjustable chinstrap (3) with a double D-ring buckle, and adjustable rear nape strap (4) with a hook-and-pile closure for Individual sizing. d. Earcup (Figure 1-3). The earcups protect hearing by reducing noise; they also flex to absorb lateral impact. The earcups can be rotated within the retention assembly to optimize fit. Each earcup (6) features a cushioned earseal (9).An earphone holder (8) and a filler pad (7) house the earphone inside the earcup. If further fitting is needed, spacer pads(5) can be installed on the back of each earcup. Link to comment Share on other sites More sharing options...
MattS Posted June 24, 2017 Share #8 Posted June 24, 2017 Had to do some digging, but I found it! Link to comment Share on other sites More sharing options...
MattS Posted June 24, 2017 Share #9 Posted June 24, 2017 I posted my SPH-4 on the first page of this thread: http://www.usmilitariaforum.com/forums/index.php?/topic/112189-us-army-aviation-life-support-equipment/?hl=%2Bflight+%2Bhelmet&do=findComment&comment=838057 Link to comment Share on other sites More sharing options...
scottermac Posted June 25, 2017 Author Share #10 Posted June 25, 2017 MattS, Thanks for your assistance. I'll post pics when I finish. I'm just waiting on a couple of parts. Link to comment Share on other sites More sharing options...
MattS Posted June 26, 2017 Share #11 Posted June 26, 2017 No problem! Link to comment Share on other sites More sharing options...
scottermac Posted July 26, 2017 Author Share #12 Posted July 26, 2017 Where can I find one of these screws? I lost one during the restoration process. And yes, I already checked Home Depot and Lowes. Thanks. Link to comment Share on other sites More sharing options...
scottermac Posted July 26, 2017 Author Share #13 Posted July 26, 2017 Where can I find some hardware screws? I lost one during the restoration process. And yes, I already checked Home Depot and Lowes. Thanks. Link to comment Share on other sites More sharing options...
72psb Posted July 27, 2017 Share #14 Posted July 27, 2017 Try Gibson and Barnes. Link to comment Share on other sites More sharing options...
scottermac Posted July 27, 2017 Author Share #15 Posted July 27, 2017 heres the one im looking for. Link to comment Share on other sites More sharing options...
72psb Posted July 27, 2017 Share #16 Posted July 27, 2017 Where on the helmet is the screw? If you have a matching one,post a picture so length can be determined. I know I have extras around,need to know exactly what to look for. Be more than happy to sent it to you. Bob Link to comment Share on other sites More sharing options...
scottermac Posted July 28, 2017 Author Share #17 Posted July 28, 2017 Heres a photo of the screw and a photo of where it goes. It appears to be an 8x32 standard screw 3/8" in length. The screw attaches one of the earcup retention straps to the outter shell. Thanks for your help. Link to comment Share on other sites More sharing options...
MattS Posted July 28, 2017 Share #18 Posted July 28, 2017 Hopefully Bob can help you out! I had a bag of spare parts for these a long time ago, wish I still did. Link to comment Share on other sites More sharing options...
72psb Posted July 28, 2017 Share #19 Posted July 28, 2017 PM me your address and I'll send it out no later than Monday. Bob Link to comment Share on other sites More sharing options...
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