I have a John Deere JD401CD 4 cylinder diesel tractor, with S/N 266475T. (219 Cubic Inch)It has a loader with a front mounted hydraulic pump. Shortly after purchasing the tractor I realized that one of the two bolts in the flywheel pulley that couples the drive shaft of the hydraulic pump had backed out. After tearing it down I found that the threads of the pulley where the bolt had backed out of were severely damaged. I purchased a new flywheel pulley, cast aluminum coupler, rubber bushings, new bolts etc. When putting it back together I used the medium grade of Lock-tite on the bolts. After putting it back together I realized that the clearance between the Cast Aluminum Coupler, at the top versus the bottom, and the Flywheel Pulley was upwards of 1/16". I asked the John Deere Dealer about this and he said that the 4 rubber bushings that were coupled with the Cast Aluminum Coupler would take care of the difference and acted like a universal joint. I was concerned but proceeded to use the tractor. I kept an eye on the two bolts in the Flywheel Pulley to make sure they didn't back out like before. With about 50 hours of use I noticed that one of the two had sheered off flush with the Flywheel Pulley! Has anyone else had this problem with the front hydraulic pump on a JD401CD John Deere and if so what did you do to resolve this problem? I also need rear tires and rims for the tractor and fenders. I live about 35 miles South and East of Columbus. (Laurelville) The tire size is 16.9-24. Has anyone got any feedback on where would be the most economical place to buy and have the tires mounted on the new rims? What would be the best price? Has anyone got any suggestions where to buy parts other than a John Deere dealer that would be more economical? Thanks, Paul
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