COMET PUMPOUT ISSUE

[sassyotto]

my least favorite part of the truckmount - my Comet Pumpout. For whatever reason, I have to throttle down the machine for it to work. But I got used to that.

Now all of a sudden it stops working, well at least that's what I thought. So today I go into the waste tank and lift the float and it starts to run! OK, clean and reset the check valves, put water in the waste tank and turn on the pumpout. the pumpout runs but no water coming out the front.
Checked the hose going to and from the pumpout and both are clear of debris. So there is water going into the pump but no water coming out of the pump. Remove and reset the check valves. Still no water but pump runs.

Any thoughts as to what it could be?

 

[SamIam]

my least favorite part of the truckmount - my Comet Pumpout. For whatever reason, I have to throttle down the machine for it to work. But I got used to that.

Now all of a sudden it stops working, well at least that's what I thought. So today I go into the waste tank and lift the float and it starts to run! OK, clean and reset the check valves, put water in the waste tank and turn on the pumpout. the pumpout runs but no water coming out the front.
Checked the hose going to and from the pumpout and both are clear of debris. So there is water going into the pump but no water coming out of the pump. Remove and reset the check valves. Still no water but pump runs.

Any thoughts as to what it could be?

Maybe it’s blocked at the intake hose in the waste tank?

I would drain and flush tank them fill with fresh water and see if that helps

 

[Papa John]

the sad thing about most pump outs is that they don't like dirty water with a lot of silt.
solve this by adding a devastator filter or lint hog.
A lint hog is cheaper, but I think you can clean longer with the devastator, because it can hold more.

 

[dealtimeman]

Show a picture of you pump out so i know which one it is and then can advise on possible solutions.

 

[hogjowl]

And vacuum
Hack

 

[sassyotto]

Maybe it’s blocked at the intake hose in the waste tank?

I would drain and flush tank them fill with fresh water and see if that helps

Thank you but as indicated, I took a hose to both the intake and outgoing hose and both ran water fine. I did fill the waste tank up with water and it will go TO the pumpout but not THROUGH it.

 

[sassyotto]

the sad thing about most pump outs is that they don't like dirty water with a lot of silt.
solve this by adding a devastator filter or lint hog.
A lint hog is cheaper, but I think you can clean longer with the devastator, because it can hold more.

Have used a Devastator since it was installed. Had the PVC pipe one but love the SS one better.

 

[sassyotto]

Show a picture of you pump out so i know which one it is and then can advise on possible solutions.

should have done that, here it is

 

[hogjowl]

The sand is clogging up the impellers

 

[SamIam]

Open it up the u joints with the hex bolt I thought u said you cleaned all the check valves??


If so take it to someone who knows how to repair it

 

[dealtimeman]

That pump is a true semi solid pumping pump.

I am wondering if your motor is weak or if you inlet is somehow blocked with a large solid.

If the motor is fine and getting the correct voltage and amperage then there has to be a blockage or the check valves are not seating as there is not much to this almost bullet proof pump design.

 

[Papa John]

The sand is clogging up the impellers

yep-- this is what happened to mine.
get a prefilter

 

[SamIam]

There are 4 check valves

 

[dealtimeman]

there is no impeller in this pump out it just has 2 pistons turning off of one crank pumping through check valves for proper water direction/movement.

sam is correct as there are 4 check valves 2 per piston. take the caps off the intake and discharge and clean and inspect check valves.

 

[Nislija]

yep-- this is what happened to mine.
get a prefilter

Any prefilter that you can recommend?

 

[Nislija]

there is no impeller in this pump out it just has 2 pistons turning off of one crank pumping through check valves for proper water direction/movement.

sam is correct as there are 4 check valves 2 per piston. take the caps off the intake and discharge and clean and inspect check valves.

I had same problem today and searching internet I found this great thread. Until today I was cleaning only top 2 check valves. What happened today was that the pump stopped pumping out waste water, but the pump was still working (sound)...
Be careful how you clean side (horizontal) check valves, you need to disassemble whole thing. It looks exactly like top ones. I cleaned a lot of dirt out of it and the pump works great now!

 

[Wandslinger]

I just went through the same thing. Finally figured it out in my case. The micro switch wasn't always engaging. You can adjust them so there is a definite connection.

 

[Mikey P]

I just went through the same thing. Finally figured it out in my case. The micro switch wasn't always engaging. You can adjust them so there is a definite connection.

Hey pal, that user handle is already taken, choose another..

 

[Papa John]

Any prefilter that you can recommend?

The mytee lint hog or the MB favorite- the Devastator

 

[Wandslinger]

Hey pal, that user handle is already taken, choose another..

Not Funny...I'm the original and always will be.....

 

[Wandslinger]

Do you see what I'm sitting in front of in my avatar?

 

[sassyotto]

glad this thread got bumped because I now have the answer for the problem!

I tore apart the pump but the diaphrams were like new. I already clean the four check valves monthly (use a Devastator filter)

The problem was actually that one of the plastic "cages" on a check valve was bent so the metal ring did not fit flush. YOU DONT NEED TO GET ALL NEW CHECK VALVES for 60 bucks each. I just got the O rings and plastic cages for all four check valves for about $30 total. I can get the distributors name if anyone is interested.

Works like new!

 

[dealtimeman]

Go ahead and post where you found them so the next guy knows where to find them as well.