[04yamaha]

for the second time in a month iv had my truck in the shop to get my pump adjusted 90* to stop the knocking noise. what is cuaseing this and how can i prevent it? is my pump on its way out.?

 

[04yamaha]

well they took my pump off today and turned it again so far no knocking. i asked why they do it and he said its just been a problem. didnt really give me and answer. so i guess we will see how long this adjustment last for. last time it lasted 1 month. does anyone have an idea on how to prevent it or what is causing this. ?

 

[04yamaha]

ahhh so its a tapered shaft, ic now how it could happen. i though maybe it was a splined shaft. i just took it to the dealer and they fixed it but never really told me what was causeing it. thanks alot