Join Date: Jun 2008
Location: Lethbridge Alberta
Model: 1999 GL1500 SE 50th Annv.
You may not have to change the pump if it is leaking as it might just be the big O ring on the pump. There are some checks you can make to check the pump itself and I would go to the how to section of this site or the service manual.
If it isn't leaking then don't worry.
1983 GL1100, 2013 Suzuki Vstrom DL650
Previous bikes - 1971 BMW R75, 2008 HD Softail, 2000 BMW R1100R, 1980 XJ650, XT500, GS550, 77 GL1000 x2 and a few others