IH 600 power steering problem

[ThatOldGuy]

I brought my 600 out of the shed to use it, and the steering is very stiff. Changed oil in steering gear box. Must be in power steering (which looks factory). Any help?

 

[caterpillar guy]

Try greasing the whole tractor with special attention to the front axle. Check oil level

 

[ThatOldGuy]

Everthing is greased. Lifted front wheels off ground and steers easily. I had added 2 quarts of fluid to the reservoir also. I do not see where it leaks, however am keeping an eye on it. Still have problem.

 

[Janicholson]

I think it uses a linkage actuated control valve where the steering arm connects to the forward and back drag link. It should be possible to have someone look at this valve to see if it is moving inside its sleeve as the steering is turned a 5 inches at the steering wheel, back and forth (engine off). If the valve slides easily when off, does it do the same when running. If it does, and there is no difference in engine sound, the hydraulic pressure to the system may be at fault. if the engine and hydraulic change their sound, it could be mechanical (spindle bearings, thrust and bushings. Jim

 

[AJB-830]

I had a similar problem with my 650-D after standing all winter once. Apparently the hydraulic pump lost prime over winter. To get it working I took a suggestion from this forum. They suggested I put a few pounds of pressure to the hydraulic reservoir, not more than 10 or 15, with engine running. This primed the pump and the power steering worked again. You can check if your hydraulic is working by pulling a hydraulic lever and see if the you can hear the relief valve noise or engine slow down. Something to try before you tear into the PS system. Al