6055 clicking on startup

[tleip]

I just received my 7096 to drive my existing 6055s, and when I attempted a wave simluation, I noticed that one of the 6055s clicks pretty loudly when it starts up - I clean both pumps every two weeks but I took the offending pump out and make sure it was clean.

Runs silent, but really clicks on startup -- anything I can do to fix this?

Thanks!

Terry

 

[rvitko]

Yes, if the pumps are more than a year old a new shock absorbing disk would solve this- 6055.740. You must remove the older 6025.740 disk first, the disk is at the base of the shaft and requires a pick or small needlenose to extract it and lift it off the shaft. If the pump is more than 2 years old the propeller should be changed as well, part 6055.700, the oldest ones had more free play and would also make a slapping noise on start up.

 

[tleip]

Does it matter which way the 740 is installed? One side has a small black disk sticking up from the larger blue disk. I did install the new props, but that made no difference, hopefully the new bushings will help.

Thanks,

Terry

 

[rvitko]

It is very important the black disk faces up and is in contact with the drive unit. The blue rubber is down and touching the bottom of the pump.