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phannosh wrote:
how to test water pump on gl1200
I'm not familiar with gl1200s, I have gl1000, but I believe thatboth waterpumps workwith similar princip. First there should be a weep hole on the bottom of the water pump's body. If it is clean and no coolant comes out from there, neither when the engine runs or not, then the water pump seals (one main seal and two o-rings on gl1000) are probably good. However, if you have a noticable leaking from the weep hole then the sealsare worn, as probably are the bearings, so the only solution is either to change or try to repair the pump. The other way is to remove the pump's outer cover (impeller's cover) and try to move the impeller left-right/up-down. It shouldn't move at all, if it does than the bad bearings, which ussualy goes together with bad main seal. Good luck, Alex.