| Author | Message | ||
     Brian Vogel Frequent User Username: guyslp Post Number: 77 Registered: 6-2009 |
Hello All, I have had great success (and, oddly, relative ease) in taking the accumulator control valve apart. These things are much simpler than I had anticipated. The trick is not in the rebuilding but in getting the *%&^%* things out of the car! I have managed to get the whole thing apart with a single exception. Step 4 in the dismantling instructions reads: Remove the sealing disc, non-return valve, and the return spring from the smaller bore of the bobbin. (See Fig. G12) [See PDF page 4 in Chapter G7 for RR363 Systems #7 is the non-return valve] The spring falls right out, but that non-return valve does not. I tried inserting a wire post and pushing, gently, from the end opposite the spring where there is a hole in an effort to get it to come out. I stopped very quickly when it became obvious this particular method was not going to work and I might damage something. In looking at the diagram above it appears that the hole that serves as the fluid passage to this non-return valve narrows significantly where the fluid passes through. I am still presuming one must use a "pusher" of some sort to get this thing to come out, but it probably has to be a rod that's quite thin. If any one has a "pusher of choice" that's successful, or can inform me that I'm entirely off-base and tell me how one should actually get this thing removed, I would love to hear about the pusher or the alternate technique. Brian | ||
| Brian Vogel Frequent User Username: guyslp Post Number: 79 Registered: 6-2009 |
To follow up on my own post, I got the suggestion from someone on the U.S. forums to use compressed or canned air to pop that non-return valve out, and it worked like a charm. I used a can of "computer keyboard cleaning" air and a bowl lined with a paper napkin for the expected projectile. One quick blast with the straw inserted into the tube at the end opposite the return spring and the non-return valve shot right out. Since there's a small plastic or fluon part on the end of this valve on the end opposite the spring using air to push it makes sense to prevent damage. Brian | ||
| Jeff Young Frequent User Username: jeyjey Post Number: 82 Registered: 10-2010 |
Thanks for posting the solution, Brian. Cheers, Jeff. | ||
| Brian Vogel Frequent User Username: guyslp Post Number: 80 Registered: 6-2009 |
Jeff, You're quite welcome. I always try to post the answers to my own questions if they come to me from an off-forums source. These forums are one of the best sources of reliable information out there for those of us who are DIY Rolls-Royce and/or Bentley mechanics. As an aside, you could probably use a pusher that was a long piece of thick-ish wire, or a sail-making needle, as long as the pushing end of either is filed off to a blunt tip. The end of the non-return valve that gets pushed upon, whether by air or something mechanical, is made of some plastic-like substance (probably fluon [ETFE]) and could be very easily damaged with rough handling. This piece also looks as if someone put a pin hole in its very center, and this is the same in both of the valve bobbins I've had apart. However, it's not so fragile that a gentle nudge with a non-pointed object should hurt anything. If you're in a situation without compressed or canned air it helps to have a reasonable "Plan B". Brian |
