BrendanD Posted March 28, 2010 Share Posted March 28, 2010 Irritating. Never leave a Spitfire standing!Last summer I fitted a used Jtype O/D and a recon box to my 1500. The car hasn't been used for 5 months, and getting it going this weekend I discover that the O/D won't stay engaged. Switching it in the revs flutter up and down making the car 'judder' with about a 30/min frequency. I topped up the gearbox oil with the correct spec and its made no difference. I had the filters out for cleaning in the summer and the O/D has only done about 400 miles since. It was working fine in October, what could have happened? Link to comment Share on other sites More sharing options...
BrendanD Posted March 28, 2010 Author Share Posted March 28, 2010 Thanks Iain,Just tried that. Can hear the windscreen wipers going, but no clicking from the O/D. It doesn't feel like an electrical problem either, it just feels like the O/D is slipping.Probably looking at a reconditioned unit.....The moral of the story. Don't buy 'well running' O/D box conversions...1. Was told I would have to get a speedo cable as the original had broken, actually it was the angle drive that was broken, meaning I had to get both!2. Propshaft couldn't be balanced as the rubber UJ was worn, had to have it replaced with a sliding joint.3. Box in the car had a very noisy layshaft and crunching 3rd gear synchro. replaced it with a reconditioned box.4. Now the O/D has stopped functioning.I wouldn't mind, but I've had the gearbox out twice already and its a job I really hate...... Link to comment Share on other sites More sharing options...
thescrapman Posted March 28, 2010 Share Posted March 28, 2010 Might just be a bit of dirt in the solenoid.See if you can get it off and blow it out.You need a very thin spanner,CheersColin Link to comment Share on other sites More sharing options...
Doug Paterson Posted March 28, 2010 Share Posted March 28, 2010 Agree that it could be dirt in solenoid. Also .... I had a similar problem before. I did 3 things, and one of them fixed the problem.1. Changed the rubber O-rings on the solenoid valve. Rimmers replacement O-Rings are noticeably thicker than the ones which came with the re-conditioned solenoid.2. Replaced one of the roll pins which hold the body of the solenoid ont the valve section. Previous pin had dropped out. Before replacing the pin the body noticeably moved when engaging Overdrive, afterwards it didn't.3. Drained all the oil - including removing the sump from the OD unit - and refilled.Its been faultless since.D Link to comment Share on other sites More sharing options...
Doug Paterson Posted March 28, 2010 Share Posted March 28, 2010 PS .... talking of think spanners .... has anyone found a source of thin enough 1 inch spanners for this job? Link to comment Share on other sites More sharing options...
Deleted User Posted March 28, 2010 Share Posted March 28, 2010 Doug_P wrote:PS .... talking of think spanners .... has anyone found a source of thin enough 1 inch spanners for this job?Yes mate I had an old spanner and used a grinder to thin it out! It worked fine for me and I still have the spanner even though I got rid of the OD! Do you want me to bring it up to Stirling this RBRR? Link to comment Share on other sites More sharing options...
Doug Paterson Posted March 28, 2010 Share Posted March 28, 2010 No thats fine Rob, I'm sorted but thanks for the offer.Reckon there must be a small gap in the market for such a tool though ;-) Link to comment Share on other sites More sharing options...
Doug Paterson Posted April 1, 2010 Share Posted April 1, 2010 For reference - comparison of the o-rings which the reconditioned solenoid came with compared with the replacements from Rimmers.Not hard to see that the replacements are going to give a better seal. Link to comment Share on other sites More sharing options...
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