replacing 107 fuel pump

I am ready to replace my fuel pump on 83 380SL which is screaming very loud.
One quick question? Will I need to drain the tank or can I just clamp off the hose if need be?

Thanks

[Benzmac]

Usually the hose is very old and brittle. If you clamp it, it may crack and leak. If you plan on doing a good job, just replace all of the hoses while there.

Thanks for the advice on the hoses. Will go ahead and do that while I am there.

Thanks