jockybee Posted May 18, 2008 Share Posted May 18, 2008 i have a discovery 2.5 tdi first reg 23/08/1996 auto diesel chassis no. salljgm73va704699 engine no.19l7206a....... could anyone help by telling me is my disco a" series "1,2 or 3 i need a new alternator and need to know the "series No. Quote Link to comment Share on other sites More sharing options...
teabag Posted May 18, 2008 Share Posted May 18, 2008 Hi jockybee. Ever since the intro of the Discovery 2 in late 1998 the previous model has been unofficialy called Discovery 1 so yours is a D1. Quote Link to comment Share on other sites More sharing options...
lynall Posted May 19, 2008 Share Posted May 19, 2008 Just tell the supplier its a 300tdi, from memory there were two pulley sizes and the later 300tdi had the smaller pulley so poor alt spun faster for more power also had shorter belt due to the pulley size. Lynall Quote Link to comment Share on other sites More sharing options...
sotal Posted May 19, 2008 Share Posted May 19, 2008 If they don't know from the fact it's a 1996 model, then I'd go somewhere else, as they can't be very good there Quote Link to comment Share on other sites More sharing options...
BogMonster Posted May 19, 2008 Share Posted May 19, 2008 If they don't know from the fact it's a 1996 model, then I'd go somewhere else, as they can't be very good there For once I agree with Sotal It is a D1 and as suggested it needs the alternator with the smaller 49mm pulley. Quote Link to comment Share on other sites More sharing options...
sotal Posted May 19, 2008 Share Posted May 19, 2008 Gee thanks, we don't disagree that much do we Quote Link to comment Share on other sites More sharing options...
teabag Posted May 19, 2008 Share Posted May 19, 2008 Of course your replacement alternator may come without a pulley and u re-use the old one, Quote Link to comment Share on other sites More sharing options...
JimAttrill Posted May 19, 2008 Share Posted May 19, 2008 I thought none of them came with pulleys, though I suppose you can buy one. I changed my earlier big pulley to the later smaller one partly to get my rev counter to read properly. I suppose it also increases the charge, but somehow I doubt it as doesn't the alternator have a voltage regulator to stop overcharging? Not great on the eleckertrickal bits, me Quote Link to comment Share on other sites More sharing options...
BogMonster Posted May 19, 2008 Share Posted May 19, 2008 The smaller pulley is intended to make the alternator spin faster at idle to improve the charging at idle Jim. Quote Link to comment Share on other sites More sharing options...
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