General Pump T-Series 47 TS4040

[wow44]

While running slight loss of pressure, checked all connections and everything is tight. No air is reaching the pump. Any ideas on what it could be?

Thanks
Mike
WOW

 

[Larry L.]

Did you try a new spray nozzel?,I also think they should last forever but they do not.

 

[wow44]

larry no problem there, and just bought the machine a year ago along with two others. There all the same pumps,Honda 13hp belt drive no problems with the two just that one. Fill loss of pressure and fills like its around 2500psi. Have noticed that the sight glass where you check the oil level the oil looks a little milky, but I thought that it was probaly condensation.

 

[Mark]

Low pressure and milky oil hmmh?

Could be worn packing, sometimes
when packing is worn it will allow
pressurized water to spray against
piston oil seals allowing water in to
the crankcase.

Oil seals seal oil in, but do not
necessarily keep water out of crankcase.

If that is the problem replace your packing
and drain & flush crankcase with fresh oil.

 

[Mark]

Mike,

I am not familiar with
the GP model TS4040, could this
be a GP model EZ4040 direct drive?

 

[Larry L.]

It could even be the unloader when checking for lost of psi or the screen in the water filter or or or.

To check and see if its the unloader causing the problem you can route around it and see if its in the pump or unloader.Unplumb your unloader from the pump,Careful when checking it this way and make "sure" you tie the trigger back on the gun.Plumb around (bypass)the unloader to the water supply,if it still shows a lost of psi more than likey its the V-packing in the pump.If the pump its holding its rated psi more than likey its the unloader causing the problem.

 

[wow44]

I ran the machine today and the pressure seemed just a little off and what I noticed was it had a pulsating feeling when you are using the soap nozzel. It also pulsated a little bit when rinsing

 

[Larry L.]

If your useing a float tank check the screen,could be starving for a little more water,when the trigger is pulled watch your water supply hose and see if its ok.

 

[Ace Sewer]

sounds like a piece of grit or in a check valve in the pump or something equivalent to that to me. assuming your pump is similar to the other general triplex pumps ive worked on there should be six valves, one each on the inlet and outlet side for each piston. they will be fairly easily accessible, you shouldn't have to pull the pump head off. pull a parts diagram for it off the internet. remove the valves. wash them. figure out which way they let water through and suck and blow on them to see that they are sealing properly. inspect the o-rings that seal them to their bores. compare each part to its corresponding part for the next piston.

hope that helps