Just to chip in here :

I changed the cambelt on my sons PD130 at 126K over the weekend.

The old belt was like new and the tensioners, roller and pump, which were all changed , were in fine fettle.

To make life easier I pulled the top and bottom rad hoses to allow the front to be swung out at about 45 degrees, and would recommend this to anyone.

The crank ribbed belt pully bolts are a pain, too soft and too tight. Make sure you have a really good quality 6mm key else you will chew them. I was left with one that I do not think I will get out again.....

Other than that, it was a breeze.....