stobbie Posted July 22, 2009 Share Posted July 22, 2009 Hi, I have a defender 300TDI overhere. I was driving and suddenly lost all drive to the wheels. I've tried again with the car in difflock, still no drive, so probably it will not be a broken halfshaft. How likely is it that the heart of the clutch plate has broken out off the plate? Clutch feels normal. The car didn't have too much backlash in the transmission, so I don't think it's a problem with the splines of the gearbox. It's a R380 gearbox, they don't suffer spline wear too much do they? What do you guys think??? Quote Link to comment Share on other sites More sharing options...
fender1234 Posted July 22, 2009 Share Posted July 22, 2009 I had this happen to me, i checked the splines on the gearbox first as its easy and then i took the clutch off and found that the centre had broke of from the clutch plate, pedal felt fine but would transmit any drive. hope this helps Quote Link to comment Share on other sites More sharing options...
BogMonster Posted July 22, 2009 Share Posted July 22, 2009 You don't say how old it is but early R380s (up to about mid 96 sometime) have just as big a problem with spline wear as anything else - after that they all have the drilled input gear in the tbox and they are fine. Early R380s also have a problem with snapping mainshafts but most should have broken long ago. I'd still reckon the centre of the clutch as being the most likely but its easier to check the splines first. If it isn't that and the gbox mainshaft is not turning when you try and drive it, then you will have to take the gearbox out anyway regardless of whether it is clutch or gbox so you won't have lost anything. Quote Link to comment Share on other sites More sharing options...
Bluemoon Posted July 22, 2009 Share Posted July 22, 2009 this happened to me, and thought the worst, check the linkage from the high/low selector, mine broke, might be about a fiver to fix. hope your lucky Brian Quote Link to comment Share on other sites More sharing options...
TheRecklessEngineer Posted July 22, 2009 Share Posted July 22, 2009 Rev it up a bit and go from reverse to 5th with the clutch out. If the mainshaft is spinning it will be hard to get it into 5th and may make some noises of protest. If the mainshaft isn't spinning it will be easy. Got to ask the obvious as well...The transfer box hasn't been knocked into neutral by any chance? Quote Link to comment Share on other sites More sharing options...
stobbie Posted July 22, 2009 Author Share Posted July 22, 2009 I've tried low and high gear of the trasfer box... I have a feeling there is a tiny little bit of movement when take my foot of the clutch, just for a fraction of a second. I'll take the PTO cover off tomorrow and see what it looks like there.. Quote Link to comment Share on other sites More sharing options...
stobbie Posted July 22, 2009 Author Share Posted July 22, 2009 Rev it up a bit and go from reverse to 5th with the clutch out. If the mainshaft is spinning it will be hard to get it into 5th and may make some noises of protest. If the mainshaft isn't spinning it will be easy. I've just tried this, I can always select any gear without the clutch without any noises... So my best bet is still the clutch plate. I hate removing gearboxes on defenders.... Quote Link to comment Share on other sites More sharing options...
disco_al Posted July 22, 2009 Share Posted July 22, 2009 I hate removing gearboxes on defenders.... you'd love doing it on a disco then........especially the top gearbox/block bolt that requires several extension bars, and triple joint elbows. Quote Link to comment Share on other sites More sharing options...
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