Landyandy Posted May 30, 2007 Share Posted May 30, 2007 Hi guys. I have a 1995 Defender 300tdi and the alternator is starting to squeel. I thik a bit of sand has got into the front bearing. Anyway my question is will a Disco 300tdi alternator fit. Also I will have to take the pulley off my old one to get the cooling fins off. Any tips for doing this. Ta. Quote Link to comment Share on other sites More sharing options...
western Posted May 30, 2007 Share Posted May 30, 2007 IIRC it's exactly the same on both models. Quote Link to comment Share on other sites More sharing options...
LandyManLuke Posted May 30, 2007 Share Posted May 30, 2007 The easiest way to get the pully off is with an air gun. Failing that, I've done it by wrapping the pulley up in a belt that's clamped down, then giving a spanner a sharp tap (or four) to crack the nut off, once its going its easy to undo. Quote Link to comment Share on other sites More sharing options...
BogMonster Posted May 30, 2007 Share Posted May 30, 2007 Hi guys.I have a 1995 Defender 300tdi and the alternator is starting to squeel. I thik a bit of sand has got into the front bearing. Anyway my question is will a Disco 300tdi alternator fit. Also I will have to take the pulley off my old one to get the cooling fins off. Any tips for doing this. Ta. It will fit but it's a different alternator; the Defender one is 65A and the Discovery one is 100A. You can put the 100A one on and some people do this if they add a rev counter to the vehicle as the std Defender one doesn't have the terminal to drive the rev counter. Quote Link to comment Share on other sites More sharing options...
Landyandy Posted May 30, 2007 Author Share Posted May 30, 2007 Does the fitting of a bigger amp alternator mean altering things like the wiring. Quote Link to comment Share on other sites More sharing options...
BogMonster Posted May 30, 2007 Share Posted May 30, 2007 I don't know if people do or not but it would seem sensible... Quote Link to comment Share on other sites More sharing options...
LandyManLuke Posted May 30, 2007 Share Posted May 30, 2007 It would be silly not to. For the sake of a bit of wire, its worth not having an electrical fire. Quote Link to comment Share on other sites More sharing options...
western Posted May 30, 2007 Share Posted May 30, 2007 IIRC it's exactly the same on both models. not strictly true, further digging shows A127-65amp on Defender 300Tdi only or alternative fit is A127-100amp 100amp same as Discovery 300Tdi Quote Link to comment Share on other sites More sharing options...
white90 Posted May 30, 2007 Share Posted May 30, 2007 yes add another decent gauge wire down to the starter motor plus watch the pulley alignment I fitted he Disco 100 amp and got through 3 aux drive belts before Mike put me onto mis aligned pulleys the alt was sitting 1-2 mm back this was throwing the belt off an chewing the side of them. Quote Link to comment Share on other sites More sharing options...
JimAttrill Posted May 31, 2007 Share Posted May 31, 2007 It will fit but it's a different alternator; the Defender one is 65A and the Discovery one is 100A. You can put the 100A one on and some people do this if they add a rev counter to the vehicle as the std Defender one doesn't have the terminal to drive the rev counter. My MM 65A A127 (Lucas in disguise) has a W terminal and was fitted as standard with a VDO rev-counter. Unfortunately it was also fitted with the early large pulley which caused the rev counter to under-read. With the later smaller pulley the reading is now correct. This is the reason there are two fan belts for Defenders, though we normally fit the longer one to both. Another peculiarity of my vehicle is that the engine is an 18L instead of the more normal 16L. Dunno what that means ..... Quote Link to comment Share on other sites More sharing options...
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