djbrookes Posted March 26, 2009 Share Posted March 26, 2009 Hi, I have a 200tdi and R380 in my Series 3 Landy. I have a problem...Whenever I am going at high speed (over 50mph) the car goes fine when I have the accelerator down. The problem is that when I let of the accelerator to slow I get a VERY loud churning, clunking, grinding noise from the front of the car. I think it is coming from the front axle (assuming the diff). Please could somebody give any advice? P.S: I still have the original set of Free Wheeling hubs on the front axle mainly due to the fact I havent got round to replacing them with drive members. The car does not move if I dont have the Free Wheeling hubs in the 'locked' position. I am puzzled with this because I am sure that all Disco 1 transmissions are permenant 4wd aren't they? So sure the rear wheels should drive also? Please help...... THANK YOU LADS :-) Quote Link to comment Share on other sites More sharing options...
Rich_P Posted March 26, 2009 Share Posted March 26, 2009 The noise up front could be generated by a failing propshaft UJ or associated diff/transferbox bearings. As for the lack of drive when the front hubs are disengaged, if you have a Discovery transferbox (LT230) then you will not get drive when the front hubs are disengaged. The LT230 incorporates its own differential. This means all the power goes to the location of least resistance, in this case it is the front diff when the hubs are disengaged. If you engaged differential lock on the transferbox, you will find it will drive with the front hubs disengaged. Quote Link to comment Share on other sites More sharing options...
Les Henson Posted March 26, 2009 Share Posted March 26, 2009 I would say check the propshaft first. Les. Quote Link to comment Share on other sites More sharing options...
plank22 Posted March 26, 2009 Share Posted March 26, 2009 I had the same problem on my series, all with standard running gear and turned out the wheel bearing were shagged. Quote Link to comment Share on other sites More sharing options...
rusty_wingnut Posted March 27, 2009 Share Posted March 27, 2009 sounds to me like you need to strip the front axle and look for damaged Ujs on the front halfshafts. does the steering wheel kick going around corners? Quote Link to comment Share on other sites More sharing options...
djbrookes Posted March 27, 2009 Author Share Posted March 27, 2009 Thanks for all the replies. I have noticed that the steering does knock when going round corners but I assumed that it was the steering box but maybe this is related? I recently changed the tyres to smaller ones and it seems to be knocking alot less now...I am confused! lol Any help would be great once again...Thanks :-) Quote Link to comment Share on other sites More sharing options...
ian_s Posted March 27, 2009 Share Posted March 27, 2009 are you running a standard series front axle in permanent 4x4? that could have caused a lot of wear on the half shaft joints, inside the axle. They were never intended to run under a load all the time. Quote Link to comment Share on other sites More sharing options...
rusty_wingnut Posted March 27, 2009 Share Posted March 27, 2009 Thanks for all the replies.I have noticed that the steering does knock when going round corners but I assumed that it was the steering box but maybe this is related? I recently changed the tyres to smaller ones and it seems to be knocking alot less now...I am confused! lol Any help would be great once again...Thanks :-) you've made a grave error, the series front axle was never meant to be driven on hard tarmac. hence why a series is PART TIME 4wd. Wehn you lock the diff to make the vehicle move you are causing wear to the front axle and the steering knocking is not the steering box it is the UJs kicking inside the axle as they transfer the drive. A coiler is FULLTIME 4wd and will have both axles powered when on tarmac, central diff unlocked. If I were you, i'd be looking at rebuilding the front axle and converting the LT230 to PART TIME 4wd. i'd also give myself a slap round the head! Quote Link to comment Share on other sites More sharing options...
task Posted March 27, 2009 Share Posted March 27, 2009 Although having never tried this myself I have heard a few stories of people running series front axles in permanent 4WD without heartache. I would guess this depends on the condition of the axle to start with. Quote Link to comment Share on other sites More sharing options...
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