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Discussion Forum

Hydraulic Pump Problems on a WD45

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Bradley Paul

11-15-1999 13:47:12

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I am having problems with the hydraulic lift on an old WD45 tractor. The lift either creeps up or creeps down and will not hold the implement at a steady level. There are setting screws on the pump to cause it to hold the implement at the chosen height. I have used an old WD45 manual to set the screws to the hold position but to no avail. According to the manual, there are valves that open or close to hold a steady volume of fluid in the cylinders. I am relatively sure that the valves in the pump are not closing properly. Are there rebuild kits for hydraulic pumps on a WD45 or do I have to look for either a salvage hydrualic pump or a rebuilt one some place?

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12-04-1999 13:06:52

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 Re: Hydraulic Pump Problems on a WD45 in reply to Bradley Paul, 11-15-1999 13:47:12  
make sure its not set for draft control. if the arms creep down in position control,try reseating the check valve. Buy two check balls . put one in the seat and wack it with a hammer and punch. Use the second one for assembly.

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Don Dupy

11-16-1999 11:57:05

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 Re: Hydraulic Pump Problems on a WD45 in reply to Bradley Paul, 11-15-1999 13:47:12  
Bradley, for what it's worth, I have had the same problem you describe with my 45. It had become more pronounced as it ages and I know of no way to correct it. I have followed the directions on the original manual but it doesn't seem to help. I have given up on this problem. If you find an answer, please let me know. Don Dupy

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