you mean the cooler break loose from the engine?
 

if so: yes, I found this also when I bought our Catalina.
The cooler tied nicely with ty-raps to the engine and the supports corroded and broken.
I ordered a set of new 3" heatexchanger bracket-set through Catalina-Direct, partnr. Z4365 and all fitted back as it should be.

I think what you are refering to is the heat exchanger. The heat exchanger mounting bracket broke on my M25XP engine in my 1986 C30. I jury rigged a replacement bracket made from aluminum. Heatexchangers have some weight, and they are subjected to some significant vibration from the diesel which translates to mounting bracket fatique (as are alternators). I think I've read some older posts mentioning mounting the heat exhangers (off the engine) in the compartment for easier maintenance (and elimination of bracket failure)

Peter is probably referring to this thread, where a few of us who have relocated the heat exchanger posted photos:
www.catalina36.org/comment/56893#comment-56893
Makes maintenance (particularly access to the transmission fluid fill) a whole lot easier.