Oil Pressure/Power steering loss problem!

[Malam]

Yesterday I lost all oil pressure and power steering at the same time. The oil light also came on..The engine didn't make any noises, so I don't think any damage has been done to the engine itself.

I had renewed the oil pressure relief spring the night before. The spring that I replaced was broken, although I couldn't find any other broken pieces inside (or the ball bearing, which I have just discovered should be there).

Since owning the car, the pressure has sat at 30psi when cold and dropped to 10psi when hot. After replacing the spring I was getting 70psi, and 55ish when hot.

What has caused the loss in oil pressure and power steering? Help please!

[BLUETHUNDER]

This might sound silly.But have you checked the belt around the crank pulley?

[Malam]

I have, belt is intact!

[shpub]

The oil, water and PAS pump are all driven by the same jack shaft. If both oil pressure and PAS have gone then I suspect that the shaft has snapped or a woodruff key has gone causing no drive. This also drives the water pump so I would not drive the car at all or start the engine as the chances are, it will damage the engine.

Time for some serious TLC I'm afraid.

[Gazzab]

ouch
afraid that is engine out time.

[Malam]

I knew I should've bought a Porsche lol

[Malam]

any more ideas before i rip the engine out?

[ro_butler]

Malam said:

any more ideas before i rip the engine out?

Nope. I think shpub is spot on. Sorry

[jonbarrett]

I'm reading the AJP rebuild manual at the moment. The pump assembly seems to be a neat space saving idea as they all take their power from a common drive train. I'll have to check but I'm sure each pump element is driven by a key which can always be a weak point. If I can offer any help with pics or descriptions let me know. I'm assuming that if a key has gone, provided the shaft is undamaged, reassembly with a new key should be possible.

Take care with the shaft. When Woodruff keys have failed on other drive systems I've owned, there is a danger it may have distorted the key slot. Also, debris can be drawn into the gap and gall the shaft. I have read reports on this forum that early keys may have been under engineered.

I have no experience with this pump assembly but in the past I have remilled the shaft slot, rebroached the driven element and fitted a slightly larger key. It depends on how much metal is available.

Please discuss this with someone experienced in pump assembly renovation as these are just suggestions.

[jonbarrett]

Reading your first post, replacing the oil pressure control control spring clearly upped the oil pressure significantly. Naturally, this would have increased the pump's torque and power consumption. I guess this would have highlighted any weakness.