Sorry a about a new thread, but Simon, Chris and Moray were so good at
expaining in my other post.  I thought I just might be able to
understand enough about this engine ( and our 1.9 D Punto) to have the
option of doing most of the servicing, if I ask for a little more
advice.

Advice needed,
1)Tappets, Are they shimmed with a form of adjustment other than
needing special tools.
With shimmed Diesel tappets in the past (clubman D) I have never even
checked them and still OK at 130,000 miles.
Do they NEED adjusting, or is it overkill in the Fiat service sheets.
Now done 29,000 and serviced by Dealer so assume they have had that
initial "bed down" check. Safe to ignore them??

2) Alternator drive belt,
Is this self adjusting for tension? and does it usually last up to the
cambelt change interval?

Photo`s refer to rest of questions. Link

http://www.dingx2.pwp.blueyonder.co.uk/fiat/Image1.html

Photo 1... Battery, is this sealed or does it need top up? Any fancy
indicators for this or do I pry the top off , as in days gone by?

 Photo 2... shows air filter, ( i assume:)Is it accessed from above?
Is it the 3 centre bolts that undo? If so is there a special tool to
get that hose type clip off the hard plastic intake tubing?

Photo4.. The wider Jubilee clip is the new bottom hose clip following
coolant change.
The black hard plastic "elbow" that connects to the white rad pipe
moved, rotated a little when pulling the rad hose off. Is this a hard
plastic to hard plastic fitting with an O ring? Its not leaking but I
cannot get near to it to check.

Photos 6/7/9 Are of what looks like air bleed valves? Running along the
front of the engine.
No sign that they have been opened before. I think all the air is out
of the system as the heaters working and the level in the Header tank
dropped on the test run ater changing the coolant. Should I remove them
to bleed ?

Are there any known issues with the 2002 Doblo JTD and PuntoD 1.9 that
It would be helpful to know of?

(I once had a Uno 1.7 D and only found out when it was too late that
main dealer servicing involved greasing the lots of little joints on
the gearchange rods at the back of the engine, that info was no where
else, not even in the Fiat service handbook).

Anything like this, thats not generally known?

Thank you very much to anyone who spends time helping me to learn
about these engines.