ASM shaft & grommet question.

willjeff · 03/10/2007, 02:48 PM

I was cleaning my skimmer today and now the pump won't start up. I had to leave for work so I couldn't mess with anymore. I think that I have the grommets out of order on the shaft. So what is the correct order for the white grommet and magnet?

willjeff · 03/11/2007, 01:42 PM

So apparently I put the shaft in without the white grommet at the back and its now stuck in the pump. Any suggestions to get the assembly out of the pump and fix my stupid mistake.

superedge88 · 03/11/2007, 03:36 PM

You shoudl be able to pull it out with a pliers very carefully.

willjeff · 03/11/2007, 04:24 PM

Yeah I tried that, but it is in there and the magnet is holding on pretty good. I just don't want to break it either, I will keep on trying.

willjeff · 03/12/2007, 06:05 PM

So I got the impeller out of the pump and reconfigured it the way it should be, and no luck on restarting the 3500 sedra pump. Nothing happens, it seems that the impeller will go back in the pump but it needs to be forced into the pump to sit where it needs to be. So if anyone has any ideas please submit them.

At this point if it won't work I will a. buy a new impeller for this pump or b. purchase a larger pump, possibly a sedra 5000. What does everyone think?

Thanks, Jeff

dougc · 03/12/2007, 11:23 PM

Make sure that the shaft turns freely inside the impeller housing. If not, soak it overnight in vinegar and it should come loose.

How long has the impeller been in use? Mine wore out after about 1.5 years. The end of the impeller wears down, which causes the impeller to be misaligned with the pump. I kept mine going for a while by adding nylon washers, but eventually that didn't work any more. A new needle wheel impeller fixed it right up.

willjeff · 03/14/2007, 04:42 PM

I have had it for about 2 years.

03/10/2007, 02:48 PM	#1
willjeff Registered Member Join Date: Mar 2004 Location: Portland, ME Posts: 444	ASM shaft & grommet question. I was cleaning my skimmer today and now the pump won't start up. I had to leave for work so I couldn't mess with anymore. I think that I have the grommets out of order on the shaft. So what is the correct order for the white grommet and magnet? __________________ PBRMEASAPDEREH Current Tank Info: 38G with 15G sump

03/11/2007, 01:42 PM	#2
willjeff Registered Member Join Date: Mar 2004 Location: Portland, ME Posts: 444	So apparently I put the shaft in without the white grommet at the back and its now stuck in the pump. Any suggestions to get the assembly out of the pump and fix my stupid mistake. __________________ PBRMEASAPDEREH Current Tank Info: 38G with 15G sump

03/11/2007, 03:36 PM	#3
superedge88 Registered Member Join Date: Oct 2003 Posts: 827	You shoudl be able to pull it out with a pliers very carefully. __________________ DRILL IT!!! Current Tank Info: In charge of over 50,000 gallons of fish only tanks

03/11/2007, 04:24 PM	#4
willjeff Registered Member Join Date: Mar 2004 Location: Portland, ME Posts: 444	Yeah I tried that, but it is in there and the magnet is holding on pretty good. I just don't want to break it either, I will keep on trying. __________________ PBRMEASAPDEREH Current Tank Info: 38G with 15G sump

03/12/2007, 06:05 PM	#5
willjeff Registered Member Join Date: Mar 2004 Location: Portland, ME Posts: 444	So I got the impeller out of the pump and reconfigured it the way it should be, and no luck on restarting the 3500 sedra pump. Nothing happens, it seems that the impeller will go back in the pump but it needs to be forced into the pump to sit where it needs to be. So if anyone has any ideas please submit them. At this point if it won't work I will a. buy a new impeller for this pump or b. purchase a larger pump, possibly a sedra 5000. What does everyone think? Thanks, Jeff __________________ PBRMEASAPDEREH Current Tank Info: 38G with 15G sump

03/12/2007, 11:23 PM	#6
dougc Registered Member Join Date: Apr 2000 Location: Cherry HIll, NJ Posts: 751	Make sure that the shaft turns freely inside the impeller housing. If not, soak it overnight in vinegar and it should come loose. How long has the impeller been in use? Mine wore out after about 1.5 years. The end of the impeller wears down, which causes the impeller to be misaligned with the pump. I kept mine going for a while by adding nylon washers, but eventually that didn't work any more. A new needle wheel impeller fixed it right up. __________________ Those are my principles and if you don't like 'em I have others. Current Tank Info: 180g AGA RR, Ecosystem,AI SOL LEDs, Apex controller, MRC CR, Tunze 6100s, Osmolator

03/14/2007, 04:42 PM	#7
willjeff Registered Member Join Date: Mar 2004 Location: Portland, ME Posts: 444	I have had it for about 2 years. __________________ PBRMEASAPDEREH Current Tank Info: 38G with 15G sump