Taking head off.

Me again. Got the Haynes out and I'm removing the head (from a 2000 TD5 110) now, to replace the Gasket and hopefully not having a new head.

The Haynes is pretty good but not being particularly mechanical (but learning fast!!) I'm just getting caught out here and there.

2B.10.12 'Disconnect the wiring plugs from the injectors, coolant sensor, glow plugs and boost pressure sensor. Check that all electrical connectors/harnesses that will prevent cylinder heads removal have been discoonected/moved to one side.

OK, Wiring plugs from injectors, there are 4 "wires" going into the block just below the inlet manifold with rubber head/end smaller but similar looking as though the would be spark plug HT leads.
Do these just pull off or do they disconnect some other way?
Where is the 5th plug?

Do the inlet and exhaust manifolds remain attached to the head for removal.

They are glow plug leads and there are only four as the rear cylinder does not have a glow plug fitted. They pull off but can be very stubborn and awkward to get a grip on.

The head is a heavy bugger so removing the manifolds makes it a tad easier. Its the ideal time to get rid of your EGR gubbins and give the inlet manifold a good clean out.

Make sure you have new steel head locating dowels as your engine probably has the early nylon ones which can allow the head to move which may be why your head gasket has failed.

You are also supposed to use new head bolts but I've done the gaskets on several engines and reused the bolts with no problems. However you do so at your own risk because if you break one they can be a bugger to get out of the block.

Other than that take your time and keep everything clean and it should be straight forward.