I have a Delta hower faucet T13022 which is leaking. How do I replace the washer?

I have a Delta hower faucet T13022 which is leaking. How do I replace the washer? This would be a Monitor Series, (see image)
Delta doesn't have washers. They use seats and springs, (see image). Shut the water off and open up the valve. Remove the cartridge and replace the seats and springs. While the valve's still open turn the water back on to flush out thye supplies and valve body. Reassemble and test. Good luck and thank you for rating my reply. Tom