Open the pump, remove the filter and suck the fluid out any way you can. Ann new stuff and repeat if you want to get it really clean. Removing the fluid in the pump will only get about half of it all. So if you repeat the process a few times you will get 95% of it.
Dont worry about air, it will work itself out. Just dont run the pump without fluid.
I got too many cars!! Insurance eats me alive. Dave
78 Corvette Stingray - 3k
82 242 Turbo Volvo - Manual - 270k
86 300e 5 speed manual - 210k
87 420sel - 240k
89 560sl - 78k
91 420sel - 205k
91 560sel - 85k
94 GMC Suburban - 90k
97 Harley Davidson Heritage Softail - 25k
00 GMC Silverado 1 ton 30k