OK I've just done my 147 1.9 JTDm, and it seems a bit easier than on the 156
I just removed the battery and through the gap between the battery tray and the engine could clearly see the arm and its bush where it goes into the bell housing.
Sprayed a bit of WD40 first and pushed the pedal down a few times - now MUCH lighter. put a bit of oil on it for a more sustained result. As I thought, there is no bubber boot, but you can see the flange of the top bush. To do the job properly probably need to remove the bush (as advised by someone on another 147 clutch thread), apparently you just remove the circlip from the arm spindle, lift the arm off and lever the bush out with a screwdriver - I didn't want to do that cos if the spindle dropped it could be a gearbox off job
So the pedal is much lighter, but still creaked a pit - I have sprayed white grease on all the bushes and pins on the padal assembly inside the car, creak now gone too
So what causes it?
When i bought my 156 2.5 V6 the engine had just been steam cleaned, so probably washed any lubrication away. Shortly afterwards we had floods which I drove through. A bit later the pedal got stiff and creaky (bit like the driver really) which I ignored for too long. The clutch started slipping just after we set off to Italy, and by the time we got back it was slipping quite a bit so I started investigating and found the clutch was not fully releasing - but by then the damage was done so new clutch and £500 bill
Had exactly the same creak/heavy pedal on 156 1.9JTDm not long after driving through floods again - this time I did the oil trick straight away and drove it happily for another 60k miles