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case 1840 how do i check pressures for left drive pump
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<blockquote data-quote="Kurt" data-source="post: 42233" data-attributes="member: 5370"><p>I am also going though growing pains finding info on this system, but I have found that the center raised part of the pump is the charge pump, the port on the top of this is suppose to be giving 320-340+ psi at full throttle, this supplys pressure to the high pressure pumps one forward and one rearward, (next to the engine), the one closest to the engine provides power to the right side, and the pump furthest away from the engine is for the left side. There are four testing ports on the top of the pump two on each side of the charge pump port the two furthest away from the engine will be for the left drive motor, the pressure should be above 1000 psi to 3000 psi, when the control lever is engaged for that port, when the control lever is not moved there should be no pressure, the amount of pressure is dependent on throttle position. I would check to see if you have a air lock in the hyd lines to the motor, bleed the hose for the left side. I haven't been able to find a parts breakdown for this pump, but if you find one please let me know. Kurt</p></blockquote><p></p>
[QUOTE="Kurt, post: 42233, member: 5370"] I am also going though growing pains finding info on this system, but I have found that the center raised part of the pump is the charge pump, the port on the top of this is suppose to be giving 320-340+ psi at full throttle, this supplys pressure to the high pressure pumps one forward and one rearward, (next to the engine), the one closest to the engine provides power to the right side, and the pump furthest away from the engine is for the left side. There are four testing ports on the top of the pump two on each side of the charge pump port the two furthest away from the engine will be for the left drive motor, the pressure should be above 1000 psi to 3000 psi, when the control lever is engaged for that port, when the control lever is not moved there should be no pressure, the amount of pressure is dependent on throttle position. I would check to see if you have a air lock in the hyd lines to the motor, bleed the hose for the left side. I haven't been able to find a parts breakdown for this pump, but if you find one please let me know. Kurt [/QUOTE]
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