Paul, It's a pretty straightforward job. Just make sure you have a good grip on the bolt that holds the assembly in there. It may take some effort to loosen it at first if it hasn't been removed in the last 25 years. It's soft metal, so it can easily be damaged if the wrench isn't perfectly straight. When removing the assembly, just keep track of the spring and shims. Nothing should come flying out. The plunger probably won't come out, so you'll need to use a paper clip. Just straighten it out, and bend a small right angle hook at the end. Use it to gently work the plunger out of the regulator. Here's a picture of everything from John's site: http://www.specialtauto.com/delorean-parts/images/Prim-press-regulator-1.jpg Once everything is out, it's just a simple matter of replacing the O-rings and putting everything back in. The tricky part was the plunger until I used a paper clip. Otherwise it should be fairly quick and painless. Good luck! Chris VIN 4099 At 08:19 PM 5/2/2006 +0000, you wrote: >I am going to replace these O-rings. Is there anything I need to be >aware of when I do this? Are there any surprises to be aware of, like >parts springing out or impossible to re-assemble, or is it relatively >straightforward? I already replaced the accumulator, and may still >have a hot start problem. > >Thanks, > >Paul To address comments privately to the moderating team, please address: moderators@xxxxxxxxxxx For more info on the list, tech articles, cars for sale see www.dmcnews.com To search the archives or view files, log in at http://groups.yahoo.com/group/dmcnews Yahoo! Groups Links <*> To visit your group on the web, go to: http://groups.yahoo.com/group/dmcnews/ <*> To unsubscribe from this group, send an email to: dmcnews-unsubscribe@xxxxxxxxxxxxxxx <*> Your use of Yahoo! Groups is subject to: http://docs.yahoo.com/info/terms/