Posted by stasbj on March 18, 2019 at 05:31:28 from (199.168.151.38):
I recently purchased the 830 Rice Special that was restored from Polk Auction Company in New Paris, Indiana and had it shipped to my home in PA. The tractor runs excellent, but I noticed the steering pulled to the right. Also noticed the power steering pump (near fan in front of tractor) had a leak.
Here is the story: My mechanic pulled the pump and purchased replacement seals.
He noticed when he took the pump off that the inside of the casting had some damage.
I then decided to send the pump to Owosso Tractor Parts in exchange for a re-manufactured pump.
My mechanic installed the pump. He said the steering was working well for a short time with no leaks and steering easy
Then all the sudden the tractor stalled at idle speed.
He removed the pump and called Owosso - Jermey. They asked him to take the pump a part. He noticed the machining inside of the housing and the brass bushing inside of the housing pushed forward and was stuck in between two oil pump gears jamming the gears and stalling the tractor.
He sent the pump back to Owosso who replaced the pump.
After installing the new pump and turning the steering wheel for the steering valve to build pressure he noticed the fan skipped then suddenly stopped.
He traced the apparent problem back to the fan-drive and water-pump drive unit. The keyway inside the oil pump gear is sheared. He was able to see this with a bore-scope.
He has an ITT manual, with a breakdown of the gears, but it does not give a procedure. He thinks he can do it based on the diagram, but a procedure, if available, would be helpful.
Questions: Does anyone know of an experienced JD 830 Mechanic that could help with questions for my Mechanic?
Is it possible the too high of pressure in the system caused the original pump to leak and the new pump to fail (we dont think so), or was the defect listed above more likely the only cause? Reason for the question, after we get the repair complete, Owosso replaced the pump no charge, but I do not want another pump failure to cause damage to the tractor again. So we want to understand all potential causes for such a pump failure.
He has an ITT manual and power steering manual for the system. Are the any other manuals or repair procedure manuals for such a repair?
Is it possible to repair the gear with out removing the flywheel etc (we do not see how that is possible)? How many hours would a mechanic typically spend on such a repair is there a John Deere standard hours for repair of the gear that runs the oil pump and power steering drive?
I really appreciate any advice or other expert contacts you can provide to us on this matter! I love this tractor and want to make sure our repair goes well and is done with excellence.
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