ToroMultipro 1250 Pulsating Cancel The title field is required!

1. William Connolly

   

   0 posts
   
   2/20/2015 9:02 AM

   We have a 1250 that we can't get to stop pulsating as soon as we start the pump. We've replaced hoses, o rings and fittings along with taking the pump apart and redoing all the gaskets etc in the pump. We still can't get it to stop pulsating and I was wondering if anyone has dealt with this issue and can offer any advice.
   
   Thanks and I hope everyone stays warm!
   
   Skip Connolly
   North Course Superintendent
   Detroit Golf Club
   Detroit, MI 48203

   
   
   
   
2. Andy Jorgensen

   

   1 posts
   
   2/20/2015 10:02 AM

   The pressure dampener, the thing that looks like a boob on top of the pump, is bad. When you replace it, make sure you add 8psi to the top.

   
   
   
   
3. William Connolly

   

   0 posts
   
   2/20/2015 12:02 PM

   Thanks Andrew. My mechanic said that our dampener was new, he's checking again. He also told me the pulsating is on the pressure side if that makes any sense.

   
   
   
   
4. Roland McPhearson

   

   9 posts
   
   2/20/2015 6:02 PM

   The cast iron "valve seats" in the pump could be worn/corroded. If so, the new valves won't seal and you can get the pulsing.

   
   
   
   
5. Keith Bennett

   

   2 posts
   
   2/26/2015 8:02 AM

   We had the same problem with ours last year. Ends up when our mechanic had taken the pump apart to replace a bearing it got put back together wrong. The connecting rods were rotating in the same direction instead of alternating. Just had to take the pump back apart and turn the one arm around. Small fix for a big problem. Pump worked great after that.
   To check if this is your problem, take both the diaphragm covers off and remove the diaphragms. You should be able to see the connecting rods and if you slowly turn the pump, when one rod goes up the other goes down and vice versa. If you have the same problem we did both rods will move together, causing the pump to pulsate.
   
   Hope that helps.