Melvyn.
FWD used to have a plant in Kitchener, Ontario during the war that built the right hand versions of these trucks, while the parent, American plant built left hand models. Canadian production ceased at some point shortly after 1945 and the facility became the North American parts warehouse for FWD. A pair of these trucks showed up in a Winnipeg scrap yard in the Transcona area in the late 1980's and I phoned the Kitchener operation to see if they still had manuals available. They only had a few sets used for parts references, but did mention they probably had enough parts in storage to built a brand new truck.
Around 2005, FWD merged with Seagrave and the Kitchener facility was shut down. I don't know if all the parts stored there were scrapped, sold to a third party somewhere for servicing purposes or relocated somewhere by Seagrave.
Seagrave specializes in fire trucks. There website is below:
http://seagrave.com
Might be worth contacting them to see what they might be able to help with for your truck.
David