Retroanaconda Posted February 22, 2017 Share Posted February 22, 2017 I absolutely agree swapping the standard gear in without changing the forward race will be fine for a short test to prove the fault (or not). For normal use though I would definitely change it. Quote Link to comment Share on other sites More sharing options...
reb78 Posted February 22, 2017 Share Posted February 22, 2017 7 minutes ago, Retroanaconda said: I absolutely agree swapping the standard gear in without changing the forward race will be fine for a short test to prove the fault (or not). For normal use though I would definitely change it. I'm probably the odd one out here, but I have run two different input gears and the one for my overdrive in my transfer box without dropping it to change that forward race. Not good practice, but ok so far over 75k miles. I'm not saying dont do it, but it doesnt appear to be the end of the world if you dont! 1 Quote Link to comment Share on other sites More sharing options...
western Posted February 23, 2017 Author Share Posted February 23, 2017 The OD main body is off, but the 6 countersunk M10 x 25mm screws that secure the adaptor part to transfer box are putting up a fight, [fitting info says they are 40Nm torque] 1 decided to give in, the other 5 haven't moved, only succeeded in snapping a [Teng tools] 6mm allen driver bit & twisted 2 allen keys, not enough space to get a impact driver & a hammer in to help slacken them off, might have to drop the transfer box anyway to get these darn screws out, so not much further forward to seeing if the new gear is going to cure the problem. Quote Link to comment Share on other sites More sharing options...
Bowie69 Posted February 23, 2017 Share Posted February 23, 2017 Could just dropping the gearbox mounts allow it to swing down on a jack enough to get at from underneath with something decent? Quote Link to comment Share on other sites More sharing options...
reb78 Posted February 23, 2017 Share Posted February 23, 2017 Thats annoying! There was talk a while ago about those plates coming loose, so perhaps you used loctite on the bolts? Even so, they shouldn't put up that much of a fight! What about a little heat on the heads? Quote Link to comment Share on other sites More sharing options...
western Posted February 23, 2017 Author Share Posted February 23, 2017 any further work will have to wait until the weekend, not feeling very good & not much energy, I haven't got anything to heat the screws with, got to get a new 6mm allen driver for my toolset as well, can't remember using threadlock on those bolts, the OD has been fitted for over 10 years. the screw that has come out let go with a loud 'crack' so they are very tight, but as they are twisting my allen keys, might have to drill the heads off to release the adpator plate, then remove the left over screw tails. Quote Link to comment Share on other sites More sharing options...
NickMc Posted February 24, 2017 Share Posted February 24, 2017 Have sent you a pm. Quote Link to comment Share on other sites More sharing options...
western Posted February 24, 2017 Author Share Posted February 24, 2017 pm reply sent, borrowed a friends impact gun for the morning, hopefully it'll xx shift the 5 screws & let me get 110 back driveable again 2 Quote Link to comment Share on other sites More sharing options...
western Posted February 25, 2017 Author Share Posted February 25, 2017 -- Overdrive adaptor is now removed, had to drill & easy out 5 of the 6 M10 countersunk allen head screws. all ready to fit the new standard gear & it's associated carrier/cover plate, more results later Quote Link to comment Share on other sites More sharing options...
Snagger Posted February 25, 2017 Share Posted February 25, 2017 Amazing, isn't it, Ralph, the extra difficulties that come up in something that should be easy. Well done for your perseverance/stubbornness! 1 Quote Link to comment Share on other sites More sharing options...
reb78 Posted February 25, 2017 Share Posted February 25, 2017 C'mon Ralph! We're all waiting for the verdict!!! 1 Quote Link to comment Share on other sites More sharing options...
western Posted February 25, 2017 Author Share Posted February 25, 2017 RESULT The culprit was my GKN OD unit, with the new standard gear fitted, all back together & a test drive NO more clutch slipping symptoms, pull's every gear as it's meant too. so OD consigned to shelf in my garage, the M10 bolts succumbed to a new 6mm cobalt drill bit & a easy out, all came out. so a very happy boy here Thank you all for your assistance & suggestions, I think Mo is the top of the class on this one. So for future reference if your vehicle has a GKN Overdrive fitted & you know the normal clutch is good, any slip or no drive while in gear could be a duff clutch unit within the overdrive. 1 Quote Link to comment Share on other sites More sharing options...
Mo Murphy Posted February 25, 2017 Share Posted February 25, 2017 1 Quote Link to comment Share on other sites More sharing options...
V8 Freak Posted February 25, 2017 Share Posted February 25, 2017 So.... You could pull the whole lot off again and fit the old clutch back in really!! Glad you found the reason finally. Well done for the diagnosis Mo.. Neil 1 Quote Link to comment Share on other sites More sharing options...
Bowie69 Posted February 25, 2017 Share Posted February 25, 2017 Yep well done, you can join the club of 'I have a GKN overdrive on the shelf' now. 2 Quote Link to comment Share on other sites More sharing options...
western Posted February 25, 2017 Author Share Posted February 25, 2017 1 hour ago, V8 Freak said: So.... You could pull the whole lot off again and fit the old clutch back in really!! Glad you found the reason finally. Well done for the diagnosis Mo.. Neil Not a chance but have got it in the garage, just in case Yes so am I 10/10 for Mo Quote Link to comment Share on other sites More sharing options...
reb78 Posted February 25, 2017 Share Posted February 25, 2017 Gulp. Am I the only member with a working GKN OD now??? I'm a little worried! Having said that, I have a non working spare on the shelf, so maybe I'm already in the club? Quote Link to comment Share on other sites More sharing options...
western Posted February 25, 2017 Author Share Posted February 25, 2017 Well you might be ha,ha, at least you'll know what the symptoms are & what do do about it if you get the slipping sensation. Quote Link to comment Share on other sites More sharing options...
Oakmaster Posted July 30, 2017 Share Posted July 30, 2017 Fascinating read - Dogged determination Land-Rover style. I was in the group who had a spare on the shelf, but after 12 years I found it and dragged it out to use on my V8110 rebuild. (new Galv Chassis and Bulkhead, new LT 85) The problem is I didnt have a Speed Sensor (having robbed it for my other 110) - I ordered one up form Devon 4x4 and probably just missed the last one they sold. I waited for 10 months, and then gave-up. 2 years down the road I'd like to know what people are doing about this? are they simply adding to the 'On the shelf' club, or cutting out the electronics (Id wondered about having the switch operate a relay to feed the solenoid (with another relay, fed from the reversing light switch to disengage the O/D when you select reverse? wasnt there a thing about not having the O/D engaged when in reverse?) Any help advise and comment gratefully received. thanks Quote Link to comment Share on other sites More sharing options...
western Posted July 30, 2017 Author Share Posted July 30, 2017 Devon 4x4 do a relay to inhibit overdrive when reverse is selected, photo's below it should be possible to disconnect the speed sensor & wire the solenoid to operate from the gear knob switch, IIRC mmgemini has done that on his OD unit. Quote Link to comment Share on other sites More sharing options...
reb78 Posted July 30, 2017 Share Posted July 30, 2017 You can get a speed sensor for a fraction of Devon 4x4s prices from RS Components IIRC. (I think there was a thread on the lro forum some years ago with the part numbers). There's also an overdrive spares place in Sheffield that sells parts for these a LOT cheaper than D44. (Amazes me that d44 have any custom when you look at how much they charge for things!!) 2 Quote Link to comment Share on other sites More sharing options...
Oakmaster Posted July 30, 2017 Share Posted July 30, 2017 8 minutes ago, reb78 said: You can get a speed sensor for a fraction of Devon 4x4s prices from RS Components IIRC. (I think there was a thread on the lro forum some years ago with the part numbers). There's also an overdrive spares place in Sheffield that sells parts for these a LOT cheaper than D44. (Amazes me that d44 have any custom when you look at how much they charge for things!!) You are correct - there was a thread somewhere (i thought on here but I cant find it) - I also looked at the RS components sensor, but it was not a like for like replacement - in fact it was quite different. Im slightly surprised that one of the smarter people on here, haven't made some sort of adaptor for it. I'll try to track down the Sheffield place thanks B Quote Link to comment Share on other sites More sharing options...
V8 Freak Posted July 30, 2017 Share Posted July 30, 2017 http://www.overdrive-repairs.co.uk/ In their world it's J-type.... Although they don't to the speed sensor as it's not fitted in their application of the overdrive. 1 Quote Link to comment Share on other sites More sharing options...
Oakmaster Posted July 30, 2017 Share Posted July 30, 2017 I have e-mailed them and will let you know what they have to say many thanks Quote Link to comment Share on other sites More sharing options...
western Posted July 30, 2017 Author Share Posted July 30, 2017 Link to RS components speed sensor http://uk.rs-online.com/web/p/magnetic-pickups/0285756/?searchTerm=285-756&relevancy-data=636F3D3126696E3D4931384E525353746F636B4E756D6265724D504E266C753D656E266D6D3D6D61746368616C6C26706D3D5E5C647B337D5B5C732D2F255C2E2C5D5C647B332C347D2426706F3D313426736E3D592673743D52535F53544F434B5F4E554D4245522677633D4E4F4E45267573743D3238352D37353626 in this thread the above link was posted by reb78 back in Jan 2015. 1 Quote Link to comment Share on other sites More sharing options...
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