The hoses are not connected correctly. Since you did not supply the serial number I will have to guess where they hook up. One should go to a connection under the intake manifold which is engine coolant. The connection at the transmission is probably the pipe that comes out of the engine on the right side. The side of the forklift is always as you sit in the seat. If you have one connection going to the exhaust, that is wrong, should go to the front of the engine just below or above the alternator.