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[Shackeng]

Just been trailered home for the first time in 30 years after the power steering failed on the TD. Fluid level OK, no leaks, and belt OK. I conclude it is a pump change, unless someone knows better.

[tunnie]

Fuse/Relay? 

[Diamond Black Geezer]

Ohhh, sorry to read that! 

Pump sounds right to me, can't see what else it may be. Assuming the appropriate fuse has been checked, as Mr Tunnie says?

[Shackeng]

I've only had it 16 years, did you expect me to know it has a fuse? 
Seriously, I thought it was purely hydro-mechanical, but will check.
Yep, controls AC and cig. lighter etc. as well, 30A and serviceable.
Looks like the pump then.

[Shackeng]

I'm still puzzled, this is not an electro-hydraulic pump is it? 

[tunnie]

It's servotronic PAS, there is a relay behind the glovebox I think on Omega of your vintage 

[Shackeng]

Does the Community have an opinion on pattern pumps?

[Shackeng]

It's servotronic PAS, there is a relay behind the glovebox I think on Omega of your vintage 

Thanks Mark, so it may be a relay.

[Diamond Black Geezer]

If anyone can say what PAS pumps fit what Omegas (or what specifically PAS pumps will fit Shackeng's TD) then I can ask around my local 'contacts' see if anyone's got a known good GM pump 

[tunnie]

It's servotronic PAS, there is a relay behind the glovebox I think on Omega of your vintage 

Thanks Mark, so it may be a relay.

Maybe, I've read many more issues here with the relay, rather than the pump 

[tigers_gonads]

Imo, if the fluid is cleanish and the belts still in one piece / fuse okay then your looking at the relay Shack
Relay will be a tall red one at the back of your glovebox 

[Shackeng]

I should have added that, this occurred on start up after event free driving and parking, the steering was just solid, however, if I gave it about 3000 rpm, I ocsnly got a slight bit of power steering back. This would indicate to me that it is unlikely to be electrical failure, as I don't think the relay would be affected by revs.

[Shackeng]

Unfortunately, the pumps are no longer avlbl from VX, and are unique to the TD.

[tigers_gonads]

I should have added that, this occurred on start up after event free driving and parking, the steering was just solid, however, if I gave it about 3000 rpm, I ocsnly got a slight bit of power steering back. This would indicate to me that it is unlikely to be electrical failure, as I don't think the relay would be affected by revs.

The fluid tends to turn to shit as the pump breaks down inside.
The amount of assistance that the pump gives is dependent on the car speed (probably taken off the abs sensors)
If the relay is oppsed, my money is that it will shut a valve in the system somewhere so you get no assistance 



Iirc, the BMW E34  5 series 2.5 td is the same pump

[Diamond Black Geezer]

Fingers crossed that its relay, but I'll message my mate who used to have TD Elite he broke a number of years ago, he took all useful bits off it, and promptly shoved them all in storage. I've had a bloody shed load few bits off him in the past. Will pop him a message