that'd be an aftermarket unit from a company that appears to no longer exist [Waterloo Unloader Corporation in Iowa] - you're best bet will be machine shops and hydraulic shops to find the parts you need to do the repairs you need

Bill


Moved over to the Passing Lane

"When we tug a single thing in nature, we find it attached to the rest of the world" ~ John Muir
"When we tug a single thing on an old truck, we find it falls off" ~ me
Some TF series details & TF heater pics