It's important to turn off the engine and check the fluid level in the reservoir before handling the pump, to prevent injury from the system's moving parts. Choose hydraulic system/power steering fluid that matches Daimler Chrysler standard MS-10838 or a matching spec and be sure not to mix fluid types. Clean the filler cap first and check the message on the reservoir; it should read FULL when the car is at normal temperatures. Fill the pump's fluid reservoir to the proper amount and let the fluid sit for two minutes. Start the engine, let it stay on for a few seconds and turn it off afterward. Keep adding fluid as needed and run the engine two times more to see that the level does not drop when the engine is on. Raise just the front wheels in the air, turn right and left while spinning the steering wheel 20-30 times so it touches the stops on either end and then check the fluid level by dipping the dipstick and add if the level is low. Slowly drive the vehicle to the ground, activate the engine and guide the steering wheel from one lock position to the other. Shut off the engine, gauge the fluid level and add new fluid as necessary. In case the fluid is very foamy or milky, have the vehicle wait for several minutes and try the check again. If you use a hydraulic cooling fan, take out all the dirty fluid you can with a suction tool or a removed hose and restock it with fresh fluid until it's clean-you may have to do this several times. Keep your actions the same, apply the brakes, prepare the vehicle as described before and start the DRB III's Hydraulic Fan, slowly moving the wheel from lock to lock, at full power. Turn off the engine, check the oil level and add more if it's needed, doing this step again if the oil looks foamy. In the building, operate the hydraulic fan on max setting and for a moment rev the engine to 3000 rpm to truly run the fan.