Pulling to the left

[diff-breaker]

I seem to have a bit of an issue with my Disco 300tdi pulling to the left upon harsh breaking.
Any suggestions what it could be ?
So far suggestions are -
try changing the tyres round
could be calipers sticking
could be the bushes
coudl be the tracking  :roll:

[jay2578]

pads? calipers? discs? just adding to your checklist

[nismo2004]

could be the system wants bleeding.

[lurch_917]

now if theres no pull to the left under normal driving it might be a os caliper stuck upen ie not as much breaking and the lefts pull it round

[stretchy]

Ive had this before.. one time turned out to be contaminated pads due to a leakey bearing seal.  aother was a bent track rod

[B90]

Are the tyres matched at the front? i.e. are they the same make and roughly the same amount of wear? I have had this sort of problem if you have, say, a BFG on one side and a Kuhmo on the other.  [-X Swap them round and then you can eliminate this one.

[Range Rover Blues]

I get this with contaminated REAR disks (oil)
could also be a rear trailing link axle bush worn
or faulty shocks

would you say it pulls through the steering or is it the whole car that slews left?

[diff-breaker]

thanks for all the advice.

In response to Range Rover blues - it pulls through the steering and NOT the whole vehicle slewing to the left.

 

[Range Rover Blues]

Ok, that narrows it down a bit, the balance of braking on the front axle is the problem.  Either you have an inefficient RHS brake, oil contaminated or glazed disk etc, or the LHS is perhaps binding and running hot which makes the brake initially grab.

Is the truck lifted? I had some trouble with the steering on Blue before I fitted castor correction, even the pressure of a gas damper made it drift to the left so if your truck is lifted that could be making it lots worse, the self-centring effect (trail) will be greatly reduced.