TM 9-2320-209-34-2-2 17-46. BORING CASE AND GEARS REMOVAL, REPAIR, AND REPLACEMENT (TRUCK M764). TOOLS: No special tools required SUPPLIES: Safety wire Solvent, dry cleaning, type II (SD-2) Fed. Spec P-D-680 Artillery and automotive grease, type GAA, MIL-G-10924 Shim set, upper and lower rack carrier bearings Shim set, rack feed idler gear bearings Shim set, rack drive gear Spacer, rack carrier upper nut PERSONNEL: TWO EQUIPMENT CONDITION: Truck parked, engine off, handbrake set. a. Preliminary Procedure. Remove integral derrick and snatch sheave assembly. Refer to para 17-56. 17-485