Cranking KAD300 without starting?

[alt]

Given that the emergency stop on the KAD300 is electrical (rather than manual on the likes of the KAD32), can I crank without starting?

There is an emergency stop button on the engine (which i've actually wired up to the helm) which kills the engine. Can I push this and crank?

The reason is I want to prime the turbo with oil before starting.

 

[kashurst]

The reason is I want to prime the turbo with oil before starting.

If it's a new turbo take the top high pressure oil feed pipe off and just pour clean oil in whilst gently spinning it. Then put it back on again. By the time the exhaust gas pressures have got high enough to start making it turn at idle, it will be full of oil pouring in from the high pressure feed.

 

[alt]

If it's a new turbo take the top high pressure oil feed pipe off and just pour clean oil in whilst gently spinning it. Then put it back on again. By the time the exhaust gas pressures have got high enough to start making it turn at idle, it will be full of oil pouring in from the high pressure feed.

It's the original Turbo (I have it off to replace exhaust manifold gaskets).

Someone mentioned using a syringe to put some oil in the top feed (with the bottom feed already connected) but this would involve bending the top feed pipe a bit - I don't like the thought of doing that!

I'll have a look in the oil channel later, I suspect it's going to be 'wet' with oil, but obviously not full of oil

 

[kashurst]

I think you can just slide the pipe sideways a bit just to expose the hole. Its a long and springy pipe, as long as you don't actively set out to bend it it will be fine. Volvo Paul will shout at me for not recommending a new gasket though. If all you have done is just take it off and then put it back on again it will still have oil in it - certainly enough to start the engine. No different than starting up after the winter.

 

[Portofino]

It’s the other end that knackers prematurely turbos .
Full boost attempts to plane without allowing the oil to warm up .
Also sudden shut downs after full boost without allowing the thing to cool = oil can bake on the bearings .
Then the oil itself.Not wanting to start an “ which oil is best thread “ , change it regularly and follow manufacturers spec .

Having said that no harm in introducing oil into the turbo lub side if you can easily when re assembling after removing it .

 

[alt]

Thanks folks.

All new gaskets all round...thats what I'm waiting to be delivered!

 

[jon and michie]

Undo the pipe bracket underneath what is holding together the top high pressure oil pipe and the bottom one this will able you to move the top pipe enough to access.
10mm socket 1/4 drive and a 10 spanner - if my memory serves me correct for the metal bracket.
It is only connected to the pipes nothing else

 

[alt]

Undo the pipe bracket underneath what is holding together the top high pressure oil pipe and the bottom one this will able you to move the top pipe enough to access.
10mm socket 1/4 drive and a 10 spanner - if my memory serves me correct for the metal bracket.
It is only connected to the pipes nothing else

Thanks for the tip, it'll be right under my nose when I go back to the boat.... didn't spot it when taking things apart but guess I didn't need to as the turbo slid out easily... different story when putting it back as i'll need to feed some oil to it.

On the flip side.... when the boat is laid up for 6 months on the hard, i'm guessing people don't think twice about just cranking up and starting.... no different here, I guess... but best to be safe!

 

[jon and michie]

The bracket is easily located / attacked if the elbow is off - feel down the pipes and you will find it.
Also note that the 2 bolts holding the top pipe down on the flange - 1 is longer than the other

 

[alt]

The bracket is easily located / attacked if the elbow is off - feel down the pipes and you will find it.
Also note that the 2 bolts holding the top pipe down on the flange - 1 is longer than the other

Thanks again.

I'm guessing i'll find it easily. When i'll be feeding the turbo with oil not only will the elbow be off, but also the heat exchanger, so should be easily done.

 

[jon and michie]

Even easier - if the air box is off as well then it will be a doddle

 

[alt]

Even easier - if the air box is off as well then it will be a doddle

Yeah didn't even think to mention the air box.... that'll be one of the last things to go back on.

 

[jon and michie]

So here's a Question (even though alt is doing right by the volvo manual and priming the turbo as described) when you start a Kad300 engine it wont acutally fire up till the crank has turned 4 times - Now would I be right in thinking that in the cranks revolutions oil from the sump has pumped up the galleries and the high pressure inlet hose on the turbo ?

Jon