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Bobcat Skidsteer Forums
General Bobcat Skidsteer Forum
632 weak, drive motors or hydrostat?
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<blockquote data-quote="Tazza" data-source="post: 76181" data-attributes="member: 82"><p>As you only have 30 odd hours on the pump, it should be ok.</p><p>The drive motors, the two large ones are for oil in and out, the small one is for case drain. Case drain is the internal leakage of the motor. It is normal for a small amount of fluid to come out of this port without load, more will come out under load.</p><p>The spring you mention, that was in the drive motor correct? If so, this is a shuttle valve, the springs must be correct for it to work properly.</p><p>The thing is, did both motors go at the same time? or just one is weak? it is odd for two to fail ot once.</p><p>Another test it to cap the large hoses off, start the machine and slowly push the steering levers forward one at a time, see if it bogs the engine down, possibly even stalling it. If it does, it sounds like the pump is good and the motors are the weak point.</p><p>Yet another thing, drive motors can be rebuilt. Loader parts source can supply you with a new geroler, this is the main part that turns the fluid power into motion. Far cheaper than a new motor. 9 times of of 10 the issue with the drive motors is the Orings failing. $5 in Orings can get it back to running like new.</p></blockquote><p></p>
[QUOTE="Tazza, post: 76181, member: 82"] As you only have 30 odd hours on the pump, it should be ok. The drive motors, the two large ones are for oil in and out, the small one is for case drain. Case drain is the internal leakage of the motor. It is normal for a small amount of fluid to come out of this port without load, more will come out under load. The spring you mention, that was in the drive motor correct? If so, this is a shuttle valve, the springs must be correct for it to work properly. The thing is, did both motors go at the same time? or just one is weak? it is odd for two to fail ot once. Another test it to cap the large hoses off, start the machine and slowly push the steering levers forward one at a time, see if it bogs the engine down, possibly even stalling it. If it does, it sounds like the pump is good and the motors are the weak point. Yet another thing, drive motors can be rebuilt. Loader parts source can supply you with a new geroler, this is the main part that turns the fluid power into motion. Far cheaper than a new motor. 9 times of of 10 the issue with the drive motors is the Orings failing. $5 in Orings can get it back to running like new. [/QUOTE]
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Bobcat Skidsteer Forums
General Bobcat Skidsteer Forum
632 weak, drive motors or hydrostat?
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