Power steering pump

Seized is the correct spelling sorry

When it seized, it ceased :)

180.000 k's only was the distance but under what condition ??? but that should not matter as it was a pump seizure which has nought to do with engine oil only it's own oil.
Cheers

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Phil, you could well be correct.
However, it's a pretty poor show if that perforated sleeve can inadvertantly become displaced.
Especially as the consequence is so dire.

It isn't ENGINE failure which is the problem it is the failure of the POWER STEERING hydraulic pump which apparently has seized and stopped it's shaft turning and in doing so has loaded the timing chain or associated drive chain and cause the cam chain to be not driving that side, which in turn will destroy the head on that side "cos the valves are stopped and the piston is still moving. Service of power steering may be the problem.

The picture of the engine oil filter cap may well be true as the oil flow will cause the filter element to implode and then no filtering is happening and bits might go to vital areas but isn't associated with the power steering.

Your right RMD ,( Jeez What am i saying lol, thats a first!) Things get so tangled up on this forum its unbelievable!.

Cheers Axle

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So RMD, it's not "engine failure", it is just that an engine component was damaged and the engine no longer performed correctly.
Geez mate, you shoulda been a lawyer!

Speaking with owners and looking on websites, reveal a myriad of reasons that seem to prevent those wonderful Toyota 4.5l. v8 diesel engines from "performing correctly".
WA mine mechanics love them...Not

Allan.

Power steering failure is where it has started the myrad of things going wrong

NOT engine failure to start with!.


Cheers Axle.

It reminds me of Mitsubishi technology on earlier petrol engines where the Balance shaft chain, a mere kids bike chain size, usually failed because it was whipped to death by the balance shaft torsional rotation and then when it broke the rest of the engine destructed.
Pretty poor Toyota has made the P Steer pump able to break it's drive and the domino effect set in motion destroys the major components. Anyone heard of a shear pin?
I had a failure on my HJ61, after 17 years the original power steering belt broke, and no warranty was able to be claimed. It didn't destroy the engine though.
I have not seen inside a V8 Toyota but suspect the power steering drive is also the cam chain drive to the cams on that side.

In a previous job I had to diagnose failures of many mechanical things and despite having to argue the point with the foreman they wanted to know why it failed. A few notable things happened. On a D6 dozer a hydraulic relief valve stuck and the symptom was a thin sheet spray of hydraulic oil coming from the BIG engine driven pump core. The build up of pressure split the centre case of the pump and fired out the oil at around 3500psi. Just replacing the pump was not a fix, the cause had to be found. Very expensive though.

It seems to me to be as silly a design as Ford's oil pump on the 3.2l Ranger engine that won't prime.

Well, reportedly it will after you put 20 litres of oil in it, leave it a while and take 10 out. What BS!

What were they thinking?

Frank
A dmax engine has it's power steering pump driven by gears and that gear is part of the Injection pump drive and vac pump too. If the power steer pump seized it would certainly load the system but the hydraulic pump body would likely explode to relieve the torsional stress and probably not cause internal damage. It is sad the Toyota V8 external component can destroy the internals. Not good at all.

Frank, the oil pump will prime, just dont go into La la land whilst changing oil.

You have ten mins, most get the filter done first.


Cheers Axle.

Axle
Off topic, but you don't have 10 minutes in reality because it depends on the rate of oil dispersed out of the Ranger/BT50 pump. If hot it will be gone very soon. Colder oil it will take longer. How long? Well anyones guess. Just don't rely on 10 mins as being "the Time". Maybe most just happen to be ok within 10 mins, some are not. You don't need 20 litres and a time lapse to fix it.

RMD, How often have you seen this problem?

Phil
I try and keep away but know of a few vehicles which would not pump oil. Two specific cases where the owner revved the engine a few times to get pressure. No bearings then. Not going to deliver oil if the pump is dry. The side sliding cam ring design where the vane rotor spins, allows far more degree of back flow than most if not all other designs. The vanes rely on oil retention inside the vanes to keep the vanes forced outward to seal and pump. A really stupid adoption of a design to provide a infinite degree of fuel saving.