731 wont turn left or right

[123ruger]

had pump rebuilt checked filters resealed both drive motors new fluid i jacked it up and it would turn left or right but on the ground would not turn left or right makes a growling noise please help i am going crazy

 

[OldMachinist]

Did you run it long enough up on blocks to get all the air out of the system?

 

[123ruger]

Did you run it long enough up on blocks to get all the air out of the system?

i run it for a few minutes how long does it take. will i need to bleed it?or will it bleed its self i can not figure this one out. could it be that new pump?

 

[OldMachinist]

i run it for a few minutes how long does it take. will i need to bleed it?or will it bleed its self i can not figure this one out. could it be that new pump?

What I do is take the charge pressure sending unit out and screw a barbed fitting in. Then connect a piece of clear tubing and run it to the hydraulic tank. With the machine up on blocks, start the engine, run at full throttle and move the steering levers full forward for a couple of minutes and then backwards until no air bubbles flow thru the tubing.

 

[123ruger]

What I do is take the charge pressure sending unit out and screw a barbed fitting in. Then connect a piece of clear tubing and run it to the hydraulic tank. With the machine up on blocks, start the engine, run at full throttle and move the steering levers full forward for a couple of minutes and then backwards until no air bubbles flow thru the tubing.

were is the charge pressure sending unit? is it in front of the square block thanks for your help

 

[OldMachinist]

were is the charge pressure sending unit? is it in front of the square block thanks for your help

Yes, it's the larger one on the front of the square block. The smaller one is the hydraulic oil temp sender.

 

[123ruger]

Yes, it's the larger one on the front of the square block. The smaller one is the hydraulic oil temp sender.

ii ran it up on blocks about 30 min. with clear tube running to resavior very few bubbles still no left or right it growles and trys but wont turn could it be that new pump? new pump new filters new fluid new seal kits in drive motors what else is there

 

[Tazza]

ii ran it up on blocks about 30 min. with clear tube running to resavior very few bubbles still no left or right it growles and trys but wont turn could it be that new pump? new pump new filters new fluid new seal kits in drive motors what else is there

There really isn't anything left.... Unless they really stuffed the pump up when they re-built it, but its hard to believe if they knew what they were doing.
Are you getting charge pressure?