[T16]

Yes, this can ONLY really be done with the correct tool for the chain.

The genuine Bosch kits are freely available, I think I used to get mine from Breedon Gell Diesels.

I think only about £20 odd for the full kit.

Find somewhere very clean to do it, and you should not have any problems.

Whenever Ive done mine, I have always had an ice-cream tub of diesel to "wash" bits in before reassembling to give that final assurance there is no dust/particles on any of the bits.

It really is suprisingly simple to do. I would suggest doing it sooner rather than later, as in the winter, they can REALLY start to let go quickly, especially if you are seeing actual dripping down the engine and on to the floor.

It really is one of those bargain priced jobs, that costs a tiny fraction of a "reconditioned" pump, and 2) if done right, will likely outlast the rest of the car!

The head bolts can be VERY tight, and the pump is hard to hold unless you clamp it in a vice. The bolts are not particularly hard, so be as careful as you can when undoing them that you dont damage the heads, as the heads are very shallow and requires you to keep the torx as perpendicular as possible when undoing.