duncanhyams Posted August 27, 2017 Report Share Posted August 27, 2017 Hi guys, Finally got around to looking into my o/drive fault, on removing the o/drive drain cap the filter fell out and revealed a bolt with a split pin through it, Are the magnets behind here once removed or am I delving too far, not a lot of oil came out and the filter was very clean, When I removed the g/box drain plug the magnet here had a few shards of metal on it, is this to be expected ? this allowed a bit more oil to drain away. And in total I have only got about a litre and a half out I am hoping this will cute the fault once topped up correctly, Thanks in advance Duncan, Quote Link to post Share on other sites
RogerH Posted August 27, 2017 Report Share Posted August 27, 2017 Hi Duncan, what was the original fault.? Roger Quote Link to post Share on other sites
duncanhyams Posted August 27, 2017 Author Report Share Posted August 27, 2017 Hi Roger, The original fault was not engaging when it did on excelleration it would drop out and then go back in and most recently clutch slipping on engagement, Past replies were check the oil level so this is where I am, I stated that I thought it was a split pin I could see but on closer inspection it was the two screw heads I was referring too, It appears I have no magnets in place, Regards, Quote Link to post Share on other sites
RogerH Posted August 27, 2017 Report Share Posted August 27, 2017 Hi Duncan, the magnets are flat round discs (like big washers) #13 http://www.moss-europe.co.uk/shop-by-model/triumph/tr2-4a/clutch-transmission-drivetrain/overdrives-components/overdrive-units-components-tr2-4a.html Not engaging and dropping out is often an electrical fault. What is the rubber boot like around the gear stick. I rigid is can press on the gearstick and push it out of gear. Take it for a test drive with the tunnel removed Roger Quote Link to post Share on other sites
duncanhyams Posted August 27, 2017 Author Report Share Posted August 27, 2017 Roger, Thanks for your help, It is not dropping in and out of gear only out of overdrive, I have refilled with new oil 2 litres and will try in the morning like you suggest with the tunnel off, With the ignition on I can hear the relay and solenoid working. Regards Duncan. Quote Link to post Share on other sites
RogerH Posted August 27, 2017 Report Share Posted August 27, 2017 Hi Duncan, a stiff gear stick gaiter/boot may not knock it out of gear but may be enough to dislodge the OD switches. Without the tunnel this would help diagnose this problem by its absence. Roger Quote Link to post Share on other sites
Ur1328 Posted August 27, 2017 Report Share Posted August 27, 2017 I had this same problem with mine ,and found that it was dirty points on the solenoid for the overdrive,after a quick clean everything was spot on! Quote Link to post Share on other sites
duncanhyams Posted August 28, 2017 Author Report Share Posted August 28, 2017 Was the solenoid operating at all before you cleaned the points ??? Are they reached by undoing the two small screws once the protective sleeve is removed, Regards Duncan Quote Link to post Share on other sites
Ur1328 Posted August 29, 2017 Report Share Posted August 29, 2017 Yes the points are under the cap! It was just pulling in intermittently,sometimes not at all,but as soon as the points were cleaned I could hear the difference .I took my solenoid off from underneath by bending a spanner to 90 degs,cleaned and tried it on a battery before refitting. Quote Link to post Share on other sites
Rem18 Posted August 29, 2017 Report Share Posted August 29, 2017 The selenoids loose their oomph and become unreliable. Quote Link to post Share on other sites
peejay4A Posted August 29, 2017 Report Share Posted August 29, 2017 I'm not sure I understand the above. Quote Link to post Share on other sites
Rem18 Posted August 29, 2017 Report Share Posted August 29, 2017 I'm not sure I understand the above. Yeah sorry. I have had two over many years that still worked but the magnetic power weakened as I presume the coils become less efficient. So they didn't snap with good power. Hope it's clear now. Quote Link to post Share on other sites
peejay4A Posted August 31, 2017 Report Share Posted August 31, 2017 (edited) I'm not sure I agree from an electrical and physics point of view unless coil turns get shorted together. Simple ageing, no. Edited August 31, 2017 by peejay4A Quote Link to post Share on other sites
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