Should all work pretty easy since it sounds like the calipers aren't frozen. It isn't hard to rebuild them or change the brake hoses as long as the calipers aren't coroded... in which case it's probably replacement time.

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1985 300D Turbo ~225k
2000 F350 (Powerstroke) 4X4, SWB, CC, SRW, 6spd ~148k
1999 International 4900, DT466e (250hp/660 ft/lbs), Allison MD3060 ~73k