On Sale KABOLITE 1:16 K966 RTR Hydraulic RC Loader Assembled Construction Truck. PNP RC Boat Dual Motor W/O Battery E51 Fiber Glass Electric Servo Propeller ESC. Hydraulic System. Hydraulic Oil. The maximum pressure of the hydraulic pump is 15MPA, the rated pressure is 7MPA, and the maximum pressure should not exceed 9MPA, otherwise there is a risk of hose bursting.