cdawson

I'm looking to purchase an '87 R-688st with a 15 speed roadranger. Deep reduction works fine, highrange good, here's the problem. Truck will accelerate and shift through low range gears but when you let off the fuel the trans. makes a grinding noise on deceleration in all low range gears. Owner says he's driven it this way for years just coasts to a stop in neutral. Any ideas please? thanks.