I am getting ready to try a rebuild on my one of my leaking LAD struts. I spent 10 years in the scuba world rebuilding regulators the design is not that dissimilar on the LAD regulator and valve. I have done a great deal of research on the repair but haven't found any info regarding the type of o-rings. Nitrile Buna seems to be the composition but I can not find a thing about the durometer. The standard o-ring has a durometer of 70 but some of the heavy equipment rams use something around a 90. The harder the durometer the less chance of an o-ring pressure failure, but the more prone it becomes to leakage because the seal is not as good. Anyone have any thoughts?

1991 735 IL

• LAD regulating valve - disassembled pics (pic) (url) - shogun 2008-04-03 06:57:04 (1078 views)
  • regulating valve, accumulator sphere whistling noise? - richardthemorris 2008-04-15 05:30:21 (115 views)
    • My regulating valve whistled, now SQUEALS! - buffbuh 2008-05-02 17:32:58 (80 views)
  • Glad you diassemble one - JeffChia 2008-04-03 13:25:26 (118 views)
    • the tool (url) - shogun 2008-04-03 14:43:04 (188 views)
      • Re: the tool - ridgelyrocket 2008-04-06 01:19:50 (86 views)
      • How many people want o-rings? (pic) - JeffChia 2008-04-04 18:06:41 (158 views)
        • Re: How many people want o-rings? - sam740il 2008-04-10 17:31:06 (90 views)
          • Do not have number. but... - JeffChia 2008-04-11 21:54:11 (85 views)
            • Re: Do not have number. but... - sam740il 2008-04-12 20:27:35 (69 views)
        • just give me the sizes/dimensions - shogun 2008-04-04 18:12:12 (82 views)
          • Opened my o-ring box and they are... (pic) - JeffChia 2008-04-04 19:18:19 (147 views)
            • Just did another O-ring replacement for a friend (pic) - JeffChia 2008-04-08 23:02:14 (414 views)
              • Re: Just did another O-ring replacement for a friend - billc 2008-04-09 08:55:29 (95 views)
                • working pressure - shogun 2008-04-10 10:07:09 (90 views)
                  • Working pressure bar to psi - billc 2008-04-10 12:10:51 (85 views)
                    • Answer from hydraulics tech - re: durometer - billc 2008-04-10 19:23:02 (99 views)
                      • Attached to the sway bar, so it moves with every bump - erwin 2008-04-11 10:17:51 (110 views)
                      • yes, it only keeps always the same level (url) - shogun 2008-04-11 00:33:34 (111 views)
      • That is a 'pin wrench' ? - kfister 2008-04-03 23:29:07 (95 views)
        • Looks flimsy. Even needle nose pliers did not work for me. - JeffChia 2008-04-04 19:04:46 (84 views)
  • Re: LAD regulating valve - disassembled pics - billc 2008-04-03 09:59:19 (159 views)
  • have one for sale - eliasazem 2008-04-03 07:37:43 (99 views)
    • trades?? (pic) - eliasazem 2008-04-03 17:44:24 (188 views)
      • I accept an used Bentley manual in exchange (nt) - eliasazem 2008-04-04 07:01:56 (94 views)