1.)
The inlet pump and motors are the same for both, the integral
or remote models. The mounting system is the only difference.
Servicing the pumps are therefore the same.
2.)
To service/inspect the pump assembly, remove the pump from the
motor ( 4 screws).
3.)
Separate the front cover from the pump body.
Remove
the (AM220W) impeller from the pump body and replace if necessary.