Posted by crazy horse on May 14, 2015 at 18:13:26 from (66.222.185.5):
On our tractor (with two hydraulic controls on the same block), one hydraulic control lever has no detent (hold) position, it will only operate if the operator is holding it in place (pushing forward or pulling it back). Once you release it, the lever automatically moves back on its own to the neutral position and the cylinder ram stops moving.
The other lever (on the same control block) has a detent position so when the lever is moved in either direction, it operates like the first lever I mention BUT when located to the limit (forward or back), it will hold in place (the detent position). When the hydraulic cylinder on an implement reaches it's limit when that lever is in the detent hold position, it's supposed to automatically move back to the neutral position on it's own (according to the manual) BUT IT DOESN'T. Today when hooked to an implement, the control lever stayed in place (in the detent position) and the cylinder blew up, obviously a problem somewhere.
So some questions ......
1. Is it strange that one control has a detent position and the other one doesn't? 2. Do all or most controls have a detent position ? 3. If the control has a detent and it is working correctly, is it pressure buildup in the system that causes it to trip and return to neutral? 4. Can the detent feature be removed from that half of the hydraulic control unit so that both are the same as the one without the detent feature? 5. There must be an advantage to the detent feature, I just can't figure out what it might be?
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