power steering

Since recently changing my PAS pump I've noticed resistance/slight judder in the steering wheel occasionally, when stationary or moving very slowly and turning to full lock.
Could the system need bleeding or have I bigger problems?
Thanks

Any suggestions?
Thanks

Would suggest bleeding it trough thoroughly, I put a clear PVC pipe from the bleed screw to the reservoir and let it run through until it was basically clear, but what was the cause of failure of original PAS pump? If it was a broken seal then it could be a piece of rubber seal lodged in the workings somewhere giving resistance.

Stripping the box down aint no biggy, I did this to mine.

Land Rover Owner • View topic - Bush Workshop tackles a leaky steering box

How do u bleed the steering system?

DiscoNickY said:

How do u bleed the steering system?

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you can undo the nipple on the box or just turn it lock to lock a few times

gR@HaM said:

Since recently changing my PAS pump I've noticed resistance/slight judder in the steering wheel occasionally, when stationary or moving very slowly and turning to full lock.
Could the system need bleeding or have I bigger problems?
Thanks

Click to expand...

could be poor pump ,low fuid ,slipping belt or tight uj in steering linkage

jamesmartin said:

you can undo the nipple on the box or just turn it lock to lock a few times

Click to expand...

Cheers James

Thanks for the replies, I was going to have a go at bleeding it but the issue has completely gone away for the last couple of days I'm hoping it was air that has made its way back to the reservoir.
I changed the pump as when removing it noticed that it could only be attached to the mounting bracket with one bolt due to the housing being broken.

gR@HaM said:

Thanks for the replies, I was going to have a go at bleeding it but the issue has completely gone away for the last couple of days I'm hoping it was air that has made its way back to the reservoir.
I changed the pump as when removing it noticed that it could only be attached to the mounting bracket with one bolt due to the housing being broken.

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one bolt isnt enough

Yep thats why I ended up buying a new one!

Mini update, its now doing it every time I turn the steering wheel hard left and vehicle is stationary.
I recently replaced the steering wheel due to the old one being very worn, wondering whether I had over tightened the nylok nut I pulled the horn cover and slackened it off. This made no difference.
There is plenty of ATF in it, belt is tight and not slipping, and it doesnt make the noise/vibrate when I turn the wheel right or when the disco is moving.
I looked at the linkages under the bonnet and nothing obvious stood out.
Help!!! Thanks

Looking at the steering wheel side-on when the vibration occurs I noticed the SRS rotary coupler moves forwards slightly could this be it??

gR@HaM said:

Mini update, its now doing it every time I turn the steering wheel hard left and vehicle is stationary.
I recently replaced the steering wheel due to the old one being very worn, wondering whether I had over tightened the nylok nut I pulled the horn cover and slackened it off. This made no difference.
There is plenty of ATF in it, belt is tight and not slipping, and it doesnt make the noise/vibrate when I turn the wheel right or when the disco is moving.
I looked at the linkages under the bonnet and nothing obvious stood out.
Help!!! Thanks

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Hi mate, if it sounds like a groaning noise, it's very common for them to do this.

It can be reduced by running the front tyres at higher pressure than in the book. Basically the pas system is under-specc'd and so misbehaves sometimes.

If you are running at std pressure on the front it's about 28 psi from memory, pump them up to 32psi and you'll find it's better but not perfect. At standstill this noise is very common. Do you feel as though the new pump is giving sufficient assistance?

Dave

Hi Dave, thanks. Tbh I haven't checked the tyre pressure in well over a year, I have 32x12.5 muds on so have never been sure what pressure to go for. Would you suggest 32psi or is this for stock wheels?
Yes it feels like the pump is doing its job, it is almost a groan noise but I can also feel the resistance in the steering wheel.
Wasn't sure whether the fact that it only does it when turning left would indicate anything?

gR@HaM said:

Hi Dave, thanks. Tbh I haven't checked the tyre pressure in well over a year, I have 32x12.5 muds on so have never been sure what pressure to go for. Would you suggest 32psi or is this for stock wheels?
Yes it feels like the pump is doing its job, it is almost a groan noise but I can also feel the resistance in the steering wheel.
Wasn't sure whether the fact that it only does it when turning left would indicate anything?

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Once you've checked your tyres pressures (32psi at front for your tyres as a trial), then if it persists and it gets on yer tits you'll need to go further.

Check to see if any of the pas hydraulic pipes are leaking, therefore sucking in air? Check to see if they are resting on something so that it might vibrate.

Check for wear in, track rod end drag link ends, swivel and wheel bearings.

Did you fully change the pas fluid when you replaced the pump? If not, maybe give it a try? You'll need 3.2ltrs of atf for that.

And the list goes on.....................................................


Dave

gR@HaM said:

Hi Dave, thanks. Tbh I haven't checked the tyre pressure in well over a year, I have 32x12.5 muds on so have never been sure what pressure to go for. Would you suggest 32psi or is this for stock wheels?
Yes it feels like the pump is doing its job, it is almost a groan noise but I can also feel the resistance in the steering wheel.
Wasn't sure whether the fact that it only does it when turning left would indicate anything?

Click to expand...

can be a sign of low pressure or poor box ,check steering box is central when driving in a straight line ,best way is to set box central then remove /refit steering wheel so that it conforms ,then go for a drive if steering wheel isnt central you know box isnt

Personally I would have said there is an easier way to check to see if the steering box is set central.

Park the vehicle in a straight line and see if the cleft in the drop arm lines up with the centreing mark on the steering box.

If it does the box is centred; but if the steering wheel isn't, you need to find a way of centreing the wheel. This can be done by taking the wheel off as James quite rightly says, but it can also be adjusted by the small u/j in the steering column, so no need to touch the airbag.


Dave

whats best way to totally drain the system completely ?

and you say theres a bleed nipple on the steering box? not the pump?