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ASV / Terex Skidsteer Forum
temporarily looses drive power
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<blockquote data-quote="roblarss" data-source="post: 86448" data-attributes="member: 9491"><p>Update I got the oil crossed to a chevron equivalent and swapped out the oil. The drive seemed to work fine and then as the loader was used for an hour it lost drive power. Increasing the RPM slightly will get it moving again but then it fades away. At the end it needed almost full RPM to move at all. I checked the oil temp and it was 46C out of the cooler. Thats not too hot in my opinion. I left the machine to cool over night and today it drove but faded really fast. Even cold it didnt have much power. How does one test the pressure on these pumps? Its a sauer sundstrand M91-46672 MPT046C I looked at the pressure regulator and it doesnt seem to be passing. I unhooked the outlet and nothing was flowing out when under load. Heres the pump https://drive.google.com/file/d/0BwBL34qhDtojRUxFRDBmYXhQalk/view?usp=sharing Heres the pump tag https://drive.google.com/file/d/0BwBL34qhDtojeHhkbmdWRmdOZnc/view?usp=sharing Any info is appreciated, even some ideas that may work on other brands as they are all basically the same. I am suspecting that maybe the drive pump is worn and needs a rebuild. Are these difficult to rebuild? thanks</p></blockquote><p></p>
[QUOTE="roblarss, post: 86448, member: 9491"] Update I got the oil crossed to a chevron equivalent and swapped out the oil. The drive seemed to work fine and then as the loader was used for an hour it lost drive power. Increasing the RPM slightly will get it moving again but then it fades away. At the end it needed almost full RPM to move at all. I checked the oil temp and it was 46C out of the cooler. Thats not too hot in my opinion. I left the machine to cool over night and today it drove but faded really fast. Even cold it didnt have much power. How does one test the pressure on these pumps? Its a sauer sundstrand M91-46672 MPT046C I looked at the pressure regulator and it doesnt seem to be passing. I unhooked the outlet and nothing was flowing out when under load. Heres the pump https://drive.google.com/file/d/0BwBL34qhDtojRUxFRDBmYXhQalk/view?usp=sharing Heres the pump tag https://drive.google.com/file/d/0BwBL34qhDtojeHhkbmdWRmdOZnc/view?usp=sharing Any info is appreciated, even some ideas that may work on other brands as they are all basically the same. I am suspecting that maybe the drive pump is worn and needs a rebuild. Are these difficult to rebuild? thanks [/QUOTE]
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Other Brand Skidsteer Forums
ASV / Terex Skidsteer Forum
temporarily looses drive power
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