GoBuckeyes
Self-Serve and Automatics
Hey guys,
Rarely do I have any trouble with our 3535’s and when I do it’s usually pretty straight forward. This time, however, I’m a bit miffed.
This is an old 3535 on a 1980’s Southern Pride pump stand. It’s been a workhorse. Last week it started pulsing a bit. Now all of a sudden it runs hard, intake hose whips all over and the spray out on in the bay is very violent…. Video doesn’t do it justice. I pulled all six checkvalves out expecting to find one or two broken and they all look great? Didn’t have my big Allen with me to pull the head off….was thinking maybe a cracked plunger? Cracked plunger would let water into the crankcase though and that doesn’t look to be the case? I’ll check the HP seals when I get the head off tomorrow but it makes pressure and there isn’t any water leaking from under the head?
The pump discharge goes to a manifold that has two HP DEMA solenoids, one for arch and one for undercarriage (acts the same for both), and a Giant unloader that relieves back to the pump inlet. The only other thing is a Cat pulsation dampener….was going to take that off and plug the port as I’m not sure how those fail when they do. Pump is getting plenty of water….fed by overhead tank with 2” hose.
Suggestions?
Rarely do I have any trouble with our 3535’s and when I do it’s usually pretty straight forward. This time, however, I’m a bit miffed.
This is an old 3535 on a 1980’s Southern Pride pump stand. It’s been a workhorse. Last week it started pulsing a bit. Now all of a sudden it runs hard, intake hose whips all over and the spray out on in the bay is very violent…. Video doesn’t do it justice. I pulled all six checkvalves out expecting to find one or two broken and they all look great? Didn’t have my big Allen with me to pull the head off….was thinking maybe a cracked plunger? Cracked plunger would let water into the crankcase though and that doesn’t look to be the case? I’ll check the HP seals when I get the head off tomorrow but it makes pressure and there isn’t any water leaking from under the head?
The pump discharge goes to a manifold that has two HP DEMA solenoids, one for arch and one for undercarriage (acts the same for both), and a Giant unloader that relieves back to the pump inlet. The only other thing is a Cat pulsation dampener….was going to take that off and plug the port as I’m not sure how those fail when they do. Pump is getting plenty of water….fed by overhead tank with 2” hose.
Suggestions?
Last edited:
