A few weeks ago I did my first ever head gasket replacement on my petrol 1.4 C3 (TU3JP), with the guiding hand of a Haynes manual and ample online research. My one stumbling block was removing the timing belt. I removed the upper and lower plastic covers, and the engine mounting bracket, but I found there was another metal panel covering the water pump sprocket and tensioner pulley. I loosened/removed two bolts that I thought were holding this plate on, but it wouldn't budge. The Haynes manual and online guides (such as this one) make no mention of anything other than the two plastic covers and the engine mounting bracket. To get on with the gasket replacement, I pried the belt sideways off the camshaft sprocket, to lift the head off. When it came to refitting, I still couldn't get this "middle cover" off, but was able to reach down with a screwdriver to push the lever of the automatic tensioner, which gave me enough slack to lift the belt back onto the camshaft sprocket. The car's running fine and dandy, and the coolant issues are solved. The engine's done 105k miles, and I have no service history for the car. The current belt is not a factory original, so it's been replaced at least once, some time. It's showing some minor wear, and as I bought a new belt, tensioner and water pump as part of the head gasket job, I'd like to install them. Does anyone recognise the mystery lump of metal that's getting in between me and the timing belt? And are there any suggestions on how to get it off? Thanks.