The Triumph Dolomite Club - Discussion Forum http://forum.triumphdolomite.co.uk/ |
|
What should I do my O/D is stuck in. http://forum.triumphdolomite.co.uk/viewtopic.php?t=36591 |
Page 1 of 1 |
Author: | Richard the old one [ Thu Mar 25, 2021 4:23 pm ] |
Post subject: | What should I do my O/D is stuck in. |
I believe that my O/D has stuck in I know that I must not reverse the car as this will cause damage but how do I get it to release? Will know that I will do damage if I reverse the car but can I push the car backwards with the gearbox in neutral? Will it just be the solenoid valve that has stuck? So far I have checked that the 12 volts is getting to the solenoid when the switch is operated. I have checked the oil level, it was a bit down but I assume low oil level stops it going in. The car is up on axle stands and when it is in third gear and with the engine running there is no indication that the O/D is switching in or out. |
Author: | Bumpa [ Thu Mar 25, 2021 7:35 pm ] |
Post subject: | Re: What should I do my O/D is stuck in. |
Shortly after I got my 1850HL back on the road I had this problem. The OD would come on but was reluctant to drop out. In my case changing down through the gears and doing some accelerating and slowing made it come out eventually. Changing the solenoid cured it completely. It is hard to get a spanner on the solenoid in situ, but I managed it with this tool https://www.jamespaddock.co.uk/overdriv ... spanner-2 I'm no expert on these units but it is hard to see how you could damage it by simply pushing the car backwards. Don't forget that removing the solenoid will cause the oil to drain from the gearbox, so do that first! |
Author: | xvivalve [ Thu Mar 25, 2021 8:34 pm ] |
Post subject: | Re: What should I do my O/D is stuck in. |
Pushing the car backwards with overdrive engaged will have the same effect but maybe to a lesser extent on the cone clutch as driving it backwards, so try not to! Reasons for J type overdrive not disengaging in order of severity are: 1. Fault in electrical control circuit - check for a closed circuit 2. Sticking solenoid valve - remove solenoid and check valve 3. Residual pressure too high - fit pressure gauge and check residual; if too high check for sticking relief valve 4. Control orifice blocked - check and blow through with compressed air, do NOT probe with wire 5. Cone clutch sticking - tap brake ring with hide mallet 6. Internal damage - remove, examine, overhaul |
Author: | GrahamFountain [ Thu Mar 25, 2021 10:52 pm ] |
Post subject: | Re: What should I do my O/D is stuck in. |
The overdrive on our Herald had no gearbox switch and was either on or off, and I kept leaving it on and reversing, maybe a dozen times or so. I fixed the GB switch so it's only on in 3rd and 4th, but nothing other, and it's still working 4 or 5 years on and maybe 10000 miles So I'm of the opinion that they don't necessarily die the first time you run one in reverse. That being said, it may not be good idea if it's avoidable. Graham |
Author: | Richard the old one [ Sat Mar 27, 2021 7:21 pm ] |
Post subject: | Re: What should I do my O/D is stuck in. |
I am able to report back that I took the car out for a 25mile run this afternoon and the O/D worked fine even when it had warmed up. I just hope that it will continue to work as I was unable to replace the O rings on the plunger. |
Page 1 of 1 | All times are UTC+01:00 |
Powered by phpBB® Forum Software © phpBB Limited https://www.phpbb.com/ |