changread Posted August 1, 2017 Share Posted August 1, 2017 Just changed the oil on my series 3 gearbox and in the drain plug was this bit of metal !! wonder if any one could identify it? its about 3/8" long x 3/16" square, Runs fine no noise and works as it should, Regards Mike. Quote Link to comment Share on other sites More sharing options...
rtbarton Posted August 2, 2017 Share Posted August 2, 2017 Looks like a bit off a selector fork. Quote Link to comment Share on other sites More sharing options...
AV8R Posted August 5, 2017 Share Posted August 5, 2017 Yes, looks like a tip of one of the selector forks. Quote Link to comment Share on other sites More sharing options...
Cornish Rattler Posted August 5, 2017 Share Posted August 5, 2017 Its amazing what you find in gearbox's and sump's and they run perfectly fine, it could be something that was broke in the past and repaired / replaced hence why its running ok, its a big job sometimes looking for something inside that's an easy fix without stripping the box out and down if what ever it is that's fell in isn't effecting the box Quote Link to comment Share on other sites More sharing options...
rtbarton Posted August 5, 2017 Share Posted August 5, 2017 If one bit of the fork has broken off it would put more load on the bit that's left increasing the chance of that breaking. It could also mean that the synchro hub doesn't engage squarely. The forks can be removed and replaced with the box in-situ, just be careful not to lose the detent springs and balls when you take the lid off. Quote Link to comment Share on other sites More sharing options...
secondjeremy Posted August 6, 2017 Share Posted August 6, 2017 I thought the selectors were brass? Quote Link to comment Share on other sites More sharing options...
rtbarton Posted August 6, 2017 Share Posted August 6, 2017 26 minutes ago, secondjeremy said: I thought the selectors were brass? Me too, but I wasn't 100% sure. Is the reverse fork steel? He could always test the broken bit with a magnet. Quote Link to comment Share on other sites More sharing options...
Snagger Posted August 6, 2017 Share Posted August 6, 2017 1 hour ago, rtbarton said: Me too, but I wasn't 100% sure. Is the reverse fork steel? He could always test the broken bit with a magnet. Correct. It could also be part of a broken spacer ring from under the third gear retaining clip. Quote Link to comment Share on other sites More sharing options...
changread Posted August 8, 2017 Author Share Posted August 8, 2017 The piece is steel not brass, dug into the pile of receipts, the gearbox was replaced with one from Paddocks 5000 miles ago by a previous keeper, think Cornish rattler has a point this bit was in the sludge at the bottom of the drain plug which has a deep cup so think i'll plod on with it as its working fine. Quote Link to comment Share on other sites More sharing options...
Snagger Posted August 9, 2017 Share Posted August 9, 2017 Paddocks would have used Britpart components, so 5000 miles is pretty good! I wouldn't be happy to leave the box alone without further investigation. The most likely culprit is that reverse fork, and if one side has broken off, the other could at any time. The damage to gears and bearings that could be caused by such a chunk going through them is not inconsiderable, and losing reverse gear (or not being able to get out of reverse) is not the biggest issue - if the fork fails, there is nothing to stop the idler sliding into engagement while any forward gear is selected. At high speed, it's unlikely that the gear would do more than grind, but at low speed, it potentially engage and jam the transmission or "grenade" it. For the effort involved in removing the top cover and selectors, and having a good look inside with a dentists mirror, I think you're taking an unnecessary chance by ignoring it. 1 Quote Link to comment Share on other sites More sharing options...
Cornish Rattler Posted August 9, 2017 Share Posted August 9, 2017 Think paddocks sent the gearbox's out to a land rover gearbox specialist but can't for the life of me remember who it was Quote Link to comment Share on other sites More sharing options...
Snagger Posted August 9, 2017 Share Posted August 9, 2017 Beaumont, I think, but I'm sure whoever they use for labour, Paddocks will be supplying the Britpart rubbish to go in them. Quote Link to comment Share on other sites More sharing options...
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