The 400 series transducers have an overload circuit built in that elicits a beep if it experiences a load larger than it is rated to. Remove or reduce the load on the transducer. If the load has been removed and the beeping is still continuous then the transducer is overloaded somehow and most commonly this is from the pin/hook/tube touching something. Move the transducer up and away from any physical barrier or contact and see whether the beeping stops.
If the beeping persists then another potential cause could be some foreign material (such as glue) around the output tube after installing a new hook/pin with the tube vertical which could have flowed to this area and dried up causing the tube to be ‘stuck’ and thus overloaded. Inspect this area for any noticeable impedement.
If a tube repair has recently been performed, then it is possible too much epoxy has been applied and some of it has flowed underneath the glass/flexure and dried which causes the flexure to be stuck to the substrate body and manifest itself as an overload, lack of force response or a slow response altogether. By inspecting this area you can determine if the flexure is stuck or broken.