Champion 710A no hydraulics after parking.

[James Sorochan]

Went to start up machine yesterday to find no hydraulics. Serial no 710A-157-514-18794-88. It was running good a couple weeks ago then it sat. Weather was cold for a bit then warmed up to around 0 celcius when I started it. Everything is operational except hydraulics. Hydraulic oil was a little low so I topped it off to no avail. Am I looking for a electrical issue? Not sure where to start. Any help would be appreciated. Thanks

 

[HATCHEQUIP]

We got one we use on the farm every once in a blue moon 720 A and it started doing the same thing if it sets for a long time make sure the suction hoses are good and clamps are tight ours has got enough wear in the pump that it doesnt want to pick up oil took the breather out of the tank and put a hose on it and put a little air pressure on it [a little] and the pump picks it up and away she goes . But check those hoses and clamps first.

 

[DB2]

Nothing electrical on those systems. Does it have the pump driven off the front of the crankshaft via a short shaft? If so check the integrity of the splines to make sure everything is turning properly.

 

[James Sorochan]

Yes, the pump is driven off the crankshaft. It seems to be turning fine from what I can see. I will take the pressure washer and clean the area off and inspect the hoses and clamps and tighten them up if needed. Thanks Guys.

 

[Mike85]

We had a similar issue with our grader. It would loose prime as the hydraulic tank was lower than the pump. I usually just poured oil in the suction tube If it had sat for a while

 

[James Sorochan]

Hi everyone. Tried pressuring up the hydraulic tank with air tank with machine running and got nothing. Had a second person in cab pulling lift cylinders back. I'll probably cut into the hydraulic filter tomorrow and check it for metal. The machine is 200 feet from shop so I might pick up the front end with excavator and walk it over to shop so I can wash the rear end off around the pump.

 

[DB2]

Is the transmission functioning ? Not sure where the trans pump is driven on a 710.

 

[James Sorochan]

Yes the tranny is functional.

 

[DB2]

Again check the drive shaft to the pump under the radiator.

 

[James Sorochan]

I see the drive shaft spinning. I was reading the Sierra park link with all the different manuals and it shows the the pump as a three section unit with the steering pump section on the outer section. Steering is functioning fine.

 

[Coaldust]

Cold weather sure plays havoc on gear. The water is the hydraulic reservoir came out of suspension and froze on the bottom, blocking the supply. Warm up the old girl and and everything will work fine.

I seen’t it !!

 

[James Sorochan]

Here is the page on the hydraulic pump

 

[James Sorochan]

Coaldust. I'll give it a try, thanks.

 

[James Sorochan]

Sorry everyone on the crapy pictures. I'll have to get some help with this.

 

[Coaldust]

I do hope it’s that simple. Good luck. Keep us updated.

 

[HATCHEQUIP]

your shaft coming off the engine goes into gearbox that turns pumps correct ? are the pumps turning ?

 

[James Sorochan]

Yes. The machine has steering and according to the info I see online that pump is the outside pump with shaft going through the three segments. To me that tells me the shaft is not sheared or splines wore out.

 

[James Sorochan]

Until I wash that pump area off I don't really know how many pumps are stacked together. There is also a pump under the injection pump that I have no idea what it controls?

 

[James Sorochan]

The first and second pictures are from rear of machine. The third is under injection pump.

 

[DB2]

The one under the injection pump should be for the transmission.