- 1. [Fot] Type A OD pressure test (score: 1)
- Author: gblake58tr3 at icloud.com (Greg Blake)
- Date: Sun, 04 Mar 2018 19:59:49 -0600
- All knowing FOT Attached is a video of my Type A OD unit ready to bolt up to the transmission. I decided to do a pressure test with 120psi of compressed air plumbed into the operating vale port. The
- /html/fot/2018-03/msg00002.html (8,846 bytes)
- 2. [Fot] Type A OD pressure test (score: 1)
- Author: jwheeler1947 at yahoo.com (Jack Wheeler)
- Date: Mon, 5 Mar 2018 18:04:31 +0000 (UTC)
- Hi Greg.? Here is a tip for you.? When I used to rebuild A-Type overdrives, I would "lap in" the surface that the ball sits on.? I had a spare ball of the correct size, and I welded a small rod to it
- /html/fot/2018-03/msg00003.html (10,242 bytes)
- 3. [Fot] Type A OD pressure test (score: 1)
- Author: britcars at bellsouth.net (barry rosenberg)
- Date: Tue, 6 Mar 2018 11:30:36 +0000 (UTC)
- I used to put the ball in a tap in down with a blunt punch. As the case is aluminum and the ball hard steel, it made a very nice seat for itself. This can be done without pulling the OD apart. Just p
- /html/fot/2018-03/msg00004.html (11,100 bytes)
- 4. [Fot] Type A OD pressure test (score: 1)
- Author: mhado at att.net (M&M Hado)
- Date: Tue, 6 Mar 2018 08:48:34 -0600
- Greg, Just a couple more thoughts to add to the good suggestions already offered. I especially liked Jack?s idea of hand-lapping in the aluminum seats with a ball welded to a rod. I?m guessing that m
- /html/fot/2018-03/msg00006.html (13,989 bytes)
- 5. [Fot] Type A OD pressure test (score: 1)
- Author: 4msonset at gmail.com (J Wagner)
- Date: Tue, 6 Mar 2018 08:03:04 -0800
- I?m almost embarrassed to chime in here as I have no expertise on the inner workings of a transmission, but perhaps it?s more of a question than an answer. I?ve run a lot of PVC irrigation pipe in my
- /html/fot/2018-03/msg00008.html (17,873 bytes)
- 6. [Fot] Type A OD pressure test (score: 1)
- Author: charly at mitchelplumbing.com (Charly Mitchel)
- Date: Tue, 6 Mar 2018 10:17:37 -0800
- I believe the answer is the water molecules are larger than the air molecules, which makes them easier to pass through the space. I think Gore-Tex work the same way, lets the fabric breathe, but keep
- /html/fot/2018-03/msg00010.html (17,733 bytes)
- 7. [Fot] Type A OD pressure test (score: 1)
- Author: 4msonset at gmail.com (J Wagner)
- Date: Tue, 6 Mar 2018 11:40:34 -0800
- Makes sense. Subsequently, is compressed air a viable means of testing seals that normally run gear oil? -- next part -- An HTML attachment was scrubbed... URL: <http://autox.team.net/pipermail/fot/a
- /html/fot/2018-03/msg00011.html (20,163 bytes)
- 8. [Fot] Type A OD pressure test (score: 1)
- Author: charly at mitchelplumbing.com (Charly Mitchel)
- Date: Tue, 6 Mar 2018 11:57:51 -0800
- Not to me it isn't, it's not really proving anything. Can't tell it it's leaking past seals. Charly Mitchel TR6 #44 -- Original Message -- From: J Wagner To: Charly Mitchel Cc: fot at autox.team.net
- /html/fot/2018-03/msg00012.html (18,751 bytes)
- 9. [Fot] Type A OD pressure test (score: 1)
- Author: mhado at att.net (M&M Hado)
- Date: Tue, 6 Mar 2018 17:20:56 -0600
- I agree. To me using air is not so much to test the ?seals? (O-rings, balls & seats, accumulator piston rings, etc.) but to test the mechanical movement of the overdrive internals. Greg?s test showed
- /html/fot/2018-03/msg00015.html (17,966 bytes)
- 10. [Fot] Type A OD pressure test (score: 1)
- Author: gblake58tr3 at icloud.com (Greg Blake)
- Date: Tue, 06 Mar 2018 19:25:26 -0600
- All, Appreciate all the feedback. As this was my first time tearing into an overdrive, I am not familiar with how they work and what is acceptable. I was following the great articles on the Buckeye w
- /html/fot/2018-03/msg00016.html (23,384 bytes)
- 11. [Fot] Type A OD pressure test (score: 1)
- Author: cartravel at pobox.com (Larry Young)
- Date: Wed, 7 Mar 2018 14:41:47 -0600
- It seems like the balls and springs (pump, operating valve) are always a problem. I've seen all sorts of suggestions and tried many of them. Lapping the ball seat sounds like a good idea. I've always
- /html/fot/2018-03/msg00017.html (9,642 bytes)
- 12. [Fot] Type A OD pressure test (score: 1)
- Author: kaskastner at gmail.com (Kas Kastner)
- Date: Wed, 7 Mar 2018 13:11:49 -0800
- That Vaseline trick works for engines also, I used it for years. *Never be beaten by equipment.* On Wed, Mar 7, 2018 at 12:41 PM, Larry Young via Fot <fot at autox.team.net> wrote: -- next part -- An
- /html/fot/2018-03/msg00018.html (11,034 bytes)
- 13. [Fot] Type A OD pressure test (score: 1)
- Author: yellow04 at tr4racer.com (yellow04 at tr4racer.com)
- Date: Wed, 07 Mar 2018 17:09:38 -0500
- Larry's step 15 to ensure the pump get's primed is key. Saves lots of aggravation on the test stand. You can't really know what is going on without a pressure gauge, I got mine from Jay Holekamp. Wor
- /html/fot/2018-03/msg00019.html (9,531 bytes)
- 14. [Fot] Type A OD pressure test (score: 1)
- Author: ac at camoletti.ch (Alexandre Camoletti)
- Date: Thu, 08 Mar 2018 00:14:23 +0100
- An HTML attachment was scrubbed... URL: <http://autox.team.net/pipermail/fot/attachments/20180308/9f24bd0b/attachment.html>
- /html/fot/2018-03/msg00020.html (7,957 bytes)
- 15. [Fot] Type A OD pressure test (score: 1)
- Author: charly at mitchelplumbing.com (Charly)
- Date: Tue, 06 Mar 2018 18:57:34 -0700
- This is another I have used for reference. www.vintagetriumphregister.org/maintain/TransRebuild/OverDriveA02.pdf Charly Mitchel TR6 #44 On Tue 06/03/18 5:25 PM , Greg Blake gblake58tr3 at icloud.com
- /html/fot/2018-03/msg00271.html (24,938 bytes)
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