more good points winston, however i found at least on the CAT if you use the decelarator a lot in place of the tranny to control your speed (given a set throttle position) you could wear your leg out that way too (decelarator was real stiff on the CAT)
particularly when i was doing long pushes out of pond, i'd put (and leave) throttle within fairly high rpm range, use tranny gearing to increase and decrease dozer speed if needed, and only use decelarator to change directions (i.e. fwd/rev. or sharp turns).
i'm w/ waterloo......you'll be havin more fun than me, i need to dream up a new project just to rent one again.
great topic, brings back some great memories.