MODEL V2648XL, V2648 - MinnPar

•DRIVEFUNCTION (cont'd)When the speed selector switch is in thehigh position, the drive speed increases by theaddition of the P2 pump's fluid displacement(steer/lift pump) being diverted to the drivecircuit. This is accomplished by activation ofthe select directional control valve. The hydraulicpump contains two individual pump sections,one of which is used solely for the drive circuit.The other pump section supplies fluid for theoperation of lift and steer, and will supply fluidto the drive circuit when the machine is in highspeed. A check valve cartridge is used to isolatethe drive-only pump flow for use in the drivecircuit (See FIG. 5).Select DirectionalControl Valve(between drive and steer)Creep ValveFIG.SSteer DirectionalControl ValveCheck ValveCartridgeSTEERING FUNCTIONSteering is accomplished with a cylinder,knuckle, and connecting arm arrangement,which in its configuration provides a tight turningradius. The drive motors are mounted to thesteering knuckles, thus enhancing driveability.The steering cylinder, located just behind thefront bumper plate of the chassis, is controlledby the steer directional control valve on top ofthe manifold assembly (See FIG. 5&6).Steer CylinderLIFT FUNCTIONFIG. 6Lifting of the platform is accomplishedby energizing the select directional control valve.This will direct fluid from the P2 pump to theCylinderbase end ofthe lift cylinder, with the rod end ofManifoldthe lift cylinder being vented back to the tank.CoilLocated on the cylinder body (See FIG. 7), is theholding valve, which consists of a manifoldCablebody, a 2-way normally closed cartridge with amanual override, and an electric coil. Attachedto the cartridge is a cable assembly used forFIG. 7manually lowering the platform via aT-handlelocated at the rear of the machine, under the rearbumper plate. Descent speed is controlled by a flow control valve (See FIG. 3), in which clockwiserotation decreases descent speed, while counterclockwise rotation increases the descent speed.MANUAL 92357-002JUNE 1997