Well it wont be the cambelt it was done 18 months ago, first thing i did when i got it. I've ordered a stethescope form Amazon, when I get all the crap, (aircon etc) overhead out of the way i will have a listen, i hope its not the waterpump as they rarely if ever fail even though so many people change it with the cambelt every 5 or 6 years.
You never change a Ducato water pump unless it's rattley or leaking , so says FIAT tech guys . Which is unlike almost every other engine . Probably because the pump only became driven by the T/B on the newer 2.3/3.0 . I have been working on them from mid 80's models up to new ones , and in over 10 years have only had a single failed water pump .
Hessy... It's doable on a drive but awkward.
Definitely no need to remove engine mounts . However , on a pre '94 , it's easier if the forward facing suspension arm/brake reaction arm is removed .
You'll need a 35mm spanner/socket for the bottom pulley .
The tensioner is pushed out against the belt by a simple spring , and you lock the tensioner in place once you are happy the belt is taut enough , it doesn't spring against the belt in use , unlike the 2.3/3.0 .
I always use Gates/Dayco/OE kits , there's the belt and 2 plain rollers , one for the idler , one for the tensioner , different diameters IIRC on your engine . Yours should be Gates K015335XS , if it's the '91 onwards engine , I have found a different belt on some earlier engines which had shallower teeth on the belt and pulleys . I always wrap the new belt around a cam pulley to be sure it's right .
as an aside , it's 5334 XS for 2.5 non turbo and 2.8 jtd , and 5495XS for a 2.8 idTD.
I don't recall a locking pin for the crank on those , think that only came in on the '95 model . you can get into the teeth for the starter ring gear though , near the inner RHS CV joint , and wedge it there to open the bottom pulley.
There is a place for a small bolt/pin to lock into the lower timing cover , but I don't think it's stand upto the power needed to open the bolt. I think it's really as a TDC mark.
You lock the Injector pump pulley in place with a 5mm bolt , about 50mm long , through a hole in the pulley . I'm struggling to recall , I think you can lock the cam pulley too , with a similar method , using an 8mm bolt . Though there;s hardly need , as there are clear timing marks for it on the pulley and the top of the rocker cover .
make sure when the old belt is off that the tensioner isn't seized or tight on it's pivot . You shouldn't have to loosen the pivot bolt to move it , only the locking bolt .
I must have done a hundred of these......
Pat Horan Motors.com
The Camper Centre of Ireland
Adria dealer.