TM 9-2320- 209-10-4 b. Lowering Truck. FRAME 1 1. Take jack handle (1) out of hydraulic screw jack (2). 2. Using slotted end of jack handle (1), turn bleeder valve (3) to the left. 3. When wheel assembly (4) is firmly on ground, take screw jack (2) out from under truck. Take wood block (5) away from truck. 4. Put screw jack (2) and handle (1) into stowage compartment above left running board. END OF TASK 2-15