sharpy Posted April 16, 2011 Share Posted April 16, 2011 Hi guy, Could someone advise please, on a mates 91 defender with original defender engine and box it has jumped out of normal high drive/no diff lock and we can't get it back in, there is lots of rumbly Grundy noises when we try but no success, It will go into the three other drives any suggestions very welcome. Paul Quote Link to comment Share on other sites More sharing options...
JST Posted April 17, 2011 Share Posted April 17, 2011 engine running, main gearbox in any gear. clutch in foot brake applied. apply pressure on the hi/low lever in the direction you want it to go slowly lift the clutch (still keeping brake pressed) it will ease into position as the gears re-align. clutch back in. if it keeps popping out it would suggest the linkage needs adjusting. from your comment presumably it works in high - diff lock then? Quote Link to comment Share on other sites More sharing options...
sharpy Posted April 17, 2011 Author Share Posted April 17, 2011 Hi, thanks for the reply, yeah it works forwards and reverse in high and low diff lock and also in low normal, just won't go into high normal. We did follow the above procedure. Is it worth adjusting the linkage? It did jump out of high normal box a few days ago, but managed to get it in. Cheers for any ideas Paul Quote Link to comment Share on other sites More sharing options...
JST Posted April 17, 2011 Share Posted April 17, 2011 i would suggest checking the linkage. Quote Link to comment Share on other sites More sharing options...
Les Henson Posted April 17, 2011 Share Posted April 17, 2011 I agree with JST - the linkages wear quite significantly and the whole mechanism becomes sloppy. High/Low linkage isn't usually too bad as far as wear is concerned,but the diff lock arm is an awful design. Les. Quote Link to comment Share on other sites More sharing options...
sprogthedog Posted April 17, 2011 Share Posted April 17, 2011 I had this with mine. Turned out to be the diff-lock lever fouling on the back of the transfer box, meaning it would pop out of hi range every now and then. A quick adjustment of the linkage solved the problem. Quote Link to comment Share on other sites More sharing options...
sharpy Posted April 17, 2011 Author Share Posted April 17, 2011 Hi again We have had the tunnel off and adjusted it for hours with the same result, no drive, horrible noise. Something else we have noticed is that whilst this is happening the rear prop doesn't spin but the front one does? Is there some horizontal adjustment that can be made to the levers that push forwards and backwards, it just doesn't seem to push back on high gear enough to actually locate? There is a fair amount of slop in the pin that is responsible for backwards/forwards motion (4-5mm)? Could that be the culprit? Paul Quote Link to comment Share on other sites More sharing options...
western Posted April 17, 2011 Share Posted April 17, 2011 the clevis pins that connect the rods/levers should have 2 nylon top hat bushes fitted [1 on each side of the joint] Quote Link to comment Share on other sites More sharing options...
Hazza Posted April 17, 2011 Share Posted April 17, 2011 ... the rear prop doesn't spin but the front one does?... Sounds like a half shaft/diff problem on the front axle? Harry Quote Link to comment Share on other sites More sharing options...
sharpy Posted April 18, 2011 Author Share Posted April 18, 2011 Sounds like a half shaft/diff problem on the front axle? Harry Not to sure about this one, being methodical surely if the props dont spin in low/high gear in diff lock and the truck will drive in these gears also, does that not say the half shaft/diffs are ok? Paul Quote Link to comment Share on other sites More sharing options...
Disco-Ron Posted April 18, 2011 Share Posted April 18, 2011 Paul, if you are in diff lock, that measn that you've 'locked' the centre diff, pushing drive to both axles, 'if' when not in diff lock, one of the props spins, and you go no-where, then if the front prop is spinning, then something ahead of the prop is broken, its as simple as that.... just cos you can drive in difflock means nothing! Quote Link to comment Share on other sites More sharing options...
Hazza Posted April 18, 2011 Share Posted April 18, 2011 Paul, if you are in diff lock, that measn that you've 'locked' the centre diff, pushing drive to both axles, 'if' when not in diff lock, one of the props spins, and you go no-where, then if the front prop is spinning, then something ahead of the prop is broken, its as simple as that.... just cos you can drive in difflock means nothing! That's a better explanation than mine :D Quote Link to comment Share on other sites More sharing options...
green1 Posted April 18, 2011 Share Posted April 18, 2011 My rear half shaft went on my 110 hi cap the other day, it had reamed out at the hub. Managed to get a spare one off an old axle, easy fix, but took me a while and some head scratching to work out exactly what was at fault, might be a similar issue... Quote Link to comment Share on other sites More sharing options...
JST Posted April 18, 2011 Share Posted April 18, 2011 Does an 88 110 HiCap have a 1.4 or 1.6T box? Quote Link to comment Share on other sites More sharing options...
western Posted April 18, 2011 Share Posted April 18, 2011 most likely a 1.410 box. IIRC the 1.677 was on 2.5n/a diesel engined vehicles. Quote Link to comment Share on other sites More sharing options...
JST Posted April 19, 2011 Share Posted April 19, 2011 Cheers Ralph. In that case Ben - its the same as the one you had off me. Quote Link to comment Share on other sites More sharing options...
sharpy Posted April 20, 2011 Author Share Posted April 20, 2011 Ok, had a little play last night. Jacked up one front wheel, transfer box in high/unlocked and gearbox in neutral then span the wheel, prop doesn't turn, did the same to the other side, with the same result? Also tried same thing on a truck that works and the prop spins, would this be enough of an experiment to say the transfer box is ok as some have stated it's a problem forward of prop? Wanted to be a bit more informed before I undergo messing around with the tranny box or the diff. Cheers paul Quote Link to comment Share on other sites More sharing options...
Gromit Posted April 20, 2011 Share Posted April 20, 2011 Your experiment doesn't say anything about the transfer box It does say that something is broken in the axle, so either diff, half shaft, CV or drive memebers. You can pop the dust covers off and check the members. Other than that, there isn't an easy way to determine what's broken without pulling the half shafts. Quote Link to comment Share on other sites More sharing options...
JST Posted April 20, 2011 Share Posted April 20, 2011 there is a problem with the front diff as the prop doesn't turn if either front wheel is lifted and rotated. you will probably find the diff centre has thrown a pin. or both front CVs or both drivemembers. or both front half shafts or one shaft and one cv, one each side. last 4 are unlikely. Quote Link to comment Share on other sites More sharing options...
Bowie69 Posted April 20, 2011 Share Posted April 20, 2011 If its snapped one shaft it still won't turn the prop, will it? Pull the shafts, easiest way is unbolt the swivels from the axle tube. Quote Link to comment Share on other sites More sharing options...
JST Posted April 20, 2011 Share Posted April 20, 2011 good point Quote Link to comment Share on other sites More sharing options...
Gromit Posted April 20, 2011 Share Posted April 20, 2011 As above, I'd start by removing the swivels from the axle tubes and check the half shafts. You can't be sure its the diff. Quote Link to comment Share on other sites More sharing options...
Les Henson Posted April 22, 2011 Share Posted April 22, 2011 If a cv has broken you might have noticed other things - steering notchy for instance. The broken bits have a a habit of jamming the steering, or stop it working altogether. If you unbolt both swivel balls from the axle tube and withdraw each one, you'll then be prepared to remove the differential if you have to. Les. Quote Link to comment Share on other sites More sharing options...
sharpy1980 Posted April 22, 2011 Share Posted April 22, 2011 personally I always start with draining the diff oil and if nothing comes out with the oil then I carefuly put my finger in the drain hole to feel around at the bottom, everytime I've found a failed diff I found remains in the bottom first. Quote Link to comment Share on other sites More sharing options...
Les Henson Posted April 22, 2011 Share Posted April 22, 2011 You could always disconnect the front prop and then try turn the drive flange by hand - if it turns and the wheels don't then it's dismantle time Les. Quote Link to comment Share on other sites More sharing options...
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