Power Steering not so good

[jon62]

Right then, I have a small problem that my steering has no assistance when the truck is cold, but 2 or 3 mins later it's fine, I presume it is either the box or the pump not being the full shilling as there is plenty of fluid in there.

So which is it then?

[daveturnbull]

Pump.

[jon62]

What difference is there between older pumps & the 200TDI?

[bsmith]

Could be an air lock in the system, have you tried bleeding it, could be the belt slipping dose it squeel when cold, could be old tired fluid have you changed it.

Bob

[western]

some TD & 200Tdi engines [mine] use the same pump. it depends on the connections, my 110 was a TD & it's current Tdi use pump NRC9070, which has a short curved stub pipe on the rear face & a large nut connection on the tubular body.

[jon62]

Could be an air lock in the system, have you tried bleeding it, could be the belt slipping dose it squeel when cold, could be old tired fluid have you changed it.

Bob

No it does not squeal, and yes I will try replacing the fluid as it would save a few quid

[smacsor]

I've been having the same problem on my 1985 90.

But this morning after taking her out with the usual lack of assistance (and a bit of squealing), I noticed a poll of steering fluid on the drive and when I opened the bonnet it looked like is had been forced out under pressure as it was everywhere.

But once its warm, its fine and I've tried to test in on hard full lock but there's no sign of a leam now, so I don't where its failing?

I guess this must be a knackered pump?? Is replacement a doable job for a novice whose willing to have a bash?

Simon

PS. I guess this one takes priority over my heater!! The list gets longer........

[smacsor]

I've been having the same problem on my 1985 90.

But this morning after taking her out with the usual lack of assistance (and a bit of squealing), I noticed a poll of steering fluid on the drive and when I opened the bonnet it looked like is had been forced out under pressure as it was everywhere.

But once its warm, its fine and I've tried to test in on hard full lock but there's no sign of a leam now, so I don't where its failing?

I guess this must be a knackered pump?? Is replacement a doable job for a novice whose willing to have a bash?

Simon

PS. I guess this one takes priority over my heater!! The list gets longer........

Apologies...I'm getting confused!!! It's the box thats leaking rather than the pump so my question is whether that needs replacing and how easy a job it is.

Ta.

[smacsor]

I'm struggling to locate a suitable 3 bolt box. My local specialist says they are becoming harder to get suitable ones because of the age and lots are too worn to rebuild.

Is the 4-bolt a straight replacement or should i keep looking for a 3-bolt one??

Thanks,

Simon

[zulublue]

I'm struggling to locate a suitable 3 bolt box. My local specialist says they are becoming harder to get suitable ones because of the age and lots are too worn to rebuild.

Is the 4-bolt a straight replacement or should i keep looking for a 3-bolt one??

Thanks,

Simon

Hi Simon,

I had a 3 bolt on my old RRC, I swapped this for a 4 bolt unit which worked fine, I then decided to buy a D90 1992 which had 6 bolt on it when that failed I put the 4 bolt on to that, so I guess they all fit, the only thing you may need is a pipe from the pump to the box, I remember changing this on the classic.

Possibility for the other posts;

Take the reservoir cap off and see if there is any bubbles in there when the engine is running, I changed my pump last week but initially I thought the box had gone as it was covered in fluid, in a nutshell the pump had failed and blocked the cycle of the fluid building pressure up in the reservoir it they sprayed out of the breather in the cap.

[smacsor]

Hi Simon,

I had a 3 bolt on my old RRC, I swapped this for a 4 bolt unit which worked fine, I then decided to buy a D90 1992 which had 6 bolt on it when that failed I put the 4 bolt on to that, so I guess they all fit, the only thing you may need is a pipe from the pump to the box, I remember changing this on the classic.

Possibility for the other posts;

Take the reservoir cap off and see if there is any bubbles in there when the engine is running, I changed my pump last week but initially I thought the box had gone as it was covered in fluid, in a nutshell the pump had failed and blocked the cycle of the fluid building pressure up in the reservoir it they sprayed out of the breather in the cap.

Cheers Zulublue!

Now I'm wondering whether it is the pump and not the box!! I definately have bubbles in the reservoir when the engine is running so your explanation could explain why there was fluid on the underside of the bonnet and I can't get the box to leak on full lock??

Think I'll change the pump first and go from there?

Simon