Branson 4720h got wiped out by flood. Info inside how to fix

[bigrich954rr]

Well the Branson 4720h got hit hard in a flood first thing I did was drain oil in engine very little water in there.
Then I drained the hyd fluid a lot of water drained that and pulled filters.

Well I was driving it around to help clean up and move things. It痴 slowed then stopped moving.

I pull filters and drained oil again oil was clean the small HST filter was pretty clean the big suction filter was full of silt crap. I pulled the suction plate off side of trans no filter or strainer in there.

Looked at bottom of case seems to be a little silt no water . Going to pull diesel though fill hole to try and flush it?

What痴 the chances it fried the hydrostatic transmission pump?

 

[ptsg]

It should have a screen/strainer.

Here is a screen shot from the parts book:



It's the part 25 on the diagram and you have to take the cap 23 to pull it out.

 

[K5lwq]

I would not use anything but hydraulic fluid to flush. The cheap stuff. Might have to clean screens several times but I think you will eventually get it clear. I don't think you hurt the pump.

 

[bigrich954rr]

I pulled part 18 off with the tube and I can see in the case. I can see the gears in the rear but not screen. I will go to the other side and look for a part to take off.

 

[bigrich954rr]

I’m really hoping I didn’t hurt the the pump

 

[ptsg]

Well, that's very odd. Did you bought the tractor new or used? Both parts books for that model (both post and pre 2014), mention the existence of a strainer.

There has been a couple of Branson owners that had trouble priming the pumps after fluid changes, but usually just affected the hydraulic pumps, not the HST transmission.

 

[bigrich954rr]

Yea I brought it new . . It almost sounded like the Hydraulic pump wouldn’t prime or had a restriction but I could only tell when I tried to push on the petals As I wasn’t using the loader at the time