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need some help to diagnose a slack drive train in front alxe please.


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when i put power down it has to pick up a lot of slack before delivering that power to the wheels. also when i power off it has to pick up the same slack before slowing down.

this is very noticeable when changing gear at any speed and when I'm in heavy slow moving traffic its like Ive got kangaroo juice in there.

its not something i can live with nor can i just dismiss it as 'one of those land rover things' , somethings not right down there.

so , how do i check an axle for excessive play in the drive train? is there a process of elimination?

axles and gears are way above my head so any input would be greatly appreciated as i need the old girl on the road by friday to get me to work and back.

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nobber you could try taking the rubber end caps off the drive members, jacking each corner up in turn and seeing how much slack you've got in the splines, changed all 4 drive members on mine, and 75% better, can live with 25%, it might not only be the fronts only but the whole system playing "catch up"

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cheers for the reply guys.

its defo the front axle as its a really loud 'clonk' when it picks up drive , also i had a friend drive it whilst i watched from out side and i saw the front wheels jolt as the clonk took up the power.

all the bushings are new , the steering ball joints are all new , one bearing has been done reciently and its just bed in and need a final adjustment but the swivels have all been done and everything seems solid enough.

ive just put two new uj's on the front prop as well.

ive got about a quarter turn on the front prop but im told this is normal.

its happening somewhere between the front wheels and the tranny box.

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Drop the prop and see if the slack is in the transfer box or the axle (or the prop splines, or some in everything). There are loads of places slack can appear and the combination of a few of them can give a really big overall amount of slack.

The front wheels jolting is not necessarily an indication that they're where the slack is, if the rear is slacker than the front then (in theory) the front may take up drive and jolt before any power actually gets to the rear.

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Drop the prop and see if the slack is in the transfer box or the axle (or the prop splines, or some in everything). There are loads of places slack can appear and the combination of a few of them can give a really big overall amount of slack.

The front wheels jolting is not necessarily an indication that they're where the slack is, if the rear is slacker than the front then (in theory) the front may take up drive and jolt before any power actually gets to the rear.

thats the thing though , i dropped the prop and ive got a quarter turn on the transfare box and the diff.

i have some play on the flange on the pinion without taking off the castle nut , only a tad though.

the noise is unmistakably coming from the front though.

i need to systematically check everything and replace where necessary i think as like you said , it could be play in a number of things. i will check the rear as well though but i pulled both props off today and they seem fine , although they had a slight play in the splines.

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Remember as well that play is amplified - a diff is 3.54:1 so a small bit of slack in the half-shaft splines will be 3.54x more by the time it comes to the pinion, that's without the slack in the diff, pinion, etc. on top.

ah , thankyou , i hadent considered that.

whats the best way to check the half shafts for play?

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