Re: 806 power steering
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Posted by Milan H. Dilworth on August 25, 1998 at 20:55:58:
In Reply to: 806 power steering posted by k. Knaack on August 25, 1998 at 09:16:18:
: I recently inherited an 806 and I am looking for some help with the power steering. When I was younger we had one at home that steered very easy. The 806 I have now is almost impossible to steer. The oil light is on on the dash almost all the time reguardles of engine RPM. Does the 806 only have the one pump located under the left side of the platform? Is there any adjustment possible? The hyd. is full and clean, but I have not changed the filter. The tractor doesn't make any unusual noises and everything else seems to work. Thanks in advance for any help you can give me. K. The 806 has two hydraulic pumps, but only the one mounted on the left side behind the MCV (multiple control valve) assembly supplies PS flow and pressure. Take the bottom rear plug or fitting out of the MTC and the PS relief valve is just up inside that area. Get another relief valve and make a quickie check to see if it improves the steering.
The MTC orings and gaskets could be blown in the the steering pressure circuit. Make the relief valve check first. Also make sure the steering wheel cannot be turned more than 360 deg in a minute, after the steering linkage is at a stop. This should be checked without the tractor running. This will tell you if the hand pump and steering cyl. are in good condition.
The pump is most likely wornout. Without changing the filter you do not know if the oil is clean. Also pull the 3/4'' pipe plug on the transmission brake plate (bottom plate near MCV) and let the first drops of fluid go into a clean bucket. You may get water (contamianted oil hasn't been changed in ages) and then let the first bit of oil drop in as you quickly pull out the plug. Have an extra 5 gal bucket on hand just to be safe. Normally you'll get about 7 gal out of that hole if you drop the plug. However, put the plug back in quickly and examine the oil very closely. Then let us know if the oil's clean. Milan
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