View 28 Photos View 0 Videos 1992 Mack RD688S 7 axle transfer dump truck Newly Listed $45,000 USD The RD 688 is a workhorse, Mack E7 400, 18 spd eaton transmission, Mack rears, Steel Sturdy Weld boxes on truck and trailer, Bodies could use paint but are in excellent condition,... ConditionUsedUsage18,951 HoursDuty ClassHeavy Duty Transfer TruckUpfit TypeDump BodyUpfit MakeSturdyWeldEngine ModelMack E7Transmission18 Speed Manual MLS Number14569409CategoryTransfer Trucks Last Updated8/27/2026 LocationWinthrop, WA, US Sold ByTrucksnequipment LLC (855) 772-___ SHOWNUMBERCall Seller Email Seller Save More Info