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Gear driven on the ST...off the balance shaft..
It's in this link..

 

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The ST has a timing chain and the oil pump is driven by the balance shaft via a gear off the crank there are no wet belts...

 

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I

Even the initiated are getting lost.

Cams are chain, only likely service item would be tensioner. That is the good bit. No cam belt to fail and write off the engine.

The oil pump is unusually a small belt in oil, probably a lower friction thing, but obviously could fail and cause oil starvation. But this should immediately bring up low oil pressure warning before any mechanical damage.

The rest of the serpentine belt is water pump, air con,

Even the initiated are getting lost.

Cams are chain, only likely service item would be tensioner. That is the good bit. No cam belt to fail and write off the engine.

The oil pump is unusually a small belt in oil, probably a lower friction thing, but obviously could fail and cause oil starvation. But this should immediately bring up low oil pressure warning before any mechanical damage.

The rest of the serpentine belt is water pump, air con, alternator . .

There are many versions of the dragon engine some non turbos have timing belts for example..
The ST engine is now on derivative 12 (my son has a mk8.5) could be more by now mine is derivative 2 made in Bridgend and has no wet belt the same gear driven as the video i posted above...
Just ask your parts man at the main dealers for an oil pump belt you will soon find out ha ha

 

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Better view of the balance shaft being gear driven the non driven side turns the oil pump...As i said above best check with dealers incase they changed to wet belt?

 

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Isn't that the 1.5 naturally aspirated dragon engine?

A close look at Ford's new 1.5L 3-cylinder Dragon Petrol Engine

A close look at Ford's new 1.5L 3-cylinder Dragon Petrol Engine

www.team-bhp.com

Yes the diagram is the naturally aspirated one (wet timing belt on that one) I posted that just to show the set up clearer than the haynes auto fix diagram.. If you look at the youtube link i posted above showing the turbo dragon fiesta st engine it shows the same set up gear driven off the balance shaft..The haynes autofix screenshot i posted shows the same aswell...I confirmed with a guy i know works in ford parts department at my local main dealer but as i said above mines derivative 2 my sons is 12 so newer ones maybe wet oil pump belt I doubt it myself but if anyone has any doubts they should just ask their parts/service dept at their dealers..

 

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Only until 25.February 2019 built engines View attachment 591519

If you read my later reply i do say they may have changed mines derivative 2 my sons is 12 i dont know all the changes 🤣
They certainly are not all wet belt either which you stated earlier in the thread so it's best for people to check with their parts dept/dealer👍

 

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The engine build date is on the embossed square just the left of the x2 bolt on Jorgs diagrams above👍