731 hydrostat testing.

[cholder]

Hello everyone I bought a 731 half way taken apart and am trying to fix. I got the little duetz running good. I have all the hoses In the correct locations check valves in. The problem is the drive. It feels weak going forward and back and doesn't turn just growls really loud. I have changed the bronze suction filter checked all the replenishing valves, checked neutral charge relief valve and did a pressure check at the port block. 90 to 110 psi in neutral and moving on jackstands. What else can be tested before pulling and tearing down the hydro unit?

 

[cholder]

Wear plates before and after

 

[spitzair]

It certainly looks like they were worn. How does it work now that you've lapped those, assuming you have it back together already...

 

[cholder]

Picking up the gasket set this weekend. I'll post an update hopefully next week.

 

[Sapientoni]

Nothing ventured, nothing gained. If it's already broken, you can't hurt it. Bravo!!

 

[cholder]

Good news. It seemed to work like a champ. Gave it a quick run tonight but I feel good about putting it all back together.

 

[spitzair]

Excellent news. Good job, glad you got it working!