richp Posted April 20, 2006 Posted April 20, 2006 When going down a grade with my Vickers hydro, it speeds up fast and I have to yank the lever back slow it down. Is there any adjustments to cure this.
D-17_Dave Posted April 20, 2006 Posted April 20, 2006 Check for proper belt tention and oil level. These trannies should hold back as good as they pull.
Guest Posted April 20, 2006 Posted April 20, 2006 I heard a story from someone selling one; told me that his wife went down a steep hill and she had to jump off the machine... It was a steep hill. Makes me want to fix one of my machines which have NO brakes... Will be interested with what you find.
richp Posted April 21, 2006 Author Posted April 21, 2006 I remember reading a post a few years ago about a fix for this. Does anyone know what the adjustments do on the pump.
Roy Posted April 21, 2006 Posted April 21, 2006 Blocking the spring on the control linkage on a Sundstrand eliminates the problem. Don't know if it works for a Vickers or even if a Vickers has a spring on the linkage.
MikeES Posted April 21, 2006 Posted April 21, 2006 The Vickers uses the ball lock on the lever quandant (hand lever with squeese handle to release ball) to prevent the lever from working forward. If this locking system is not working the lever will easily slide forward on its own on downhills. The swash plate will want move pinion shaft which moves the lever.
richp Posted April 22, 2006 Author Posted April 22, 2006 I know the lever is not moving because I made a reference line to check. But that doesn't rule out sloppy linkage down stream that could be causing it. I also remember a spring that ran from the cooler to the pintle controller that this trans doesn't have. Maybe that is my problem.
MikeES Posted April 22, 2006 Posted April 22, 2006 Rich, I run a Vickers with the spring on one tractor (3415H) and without on another (HB212). The spring tends make the lever center easier and it may compensate for some slop in the linkage, but I see little difference in the operation of the tractors. I see more difference running uphill vs. downhill with 212 vs. the 3415 but it could also be that the 212 has about 5 times the hours as the 3415. I should try the spring on the 212 and see what it does.
D-17_Dave Posted April 22, 2006 Posted April 22, 2006 Mike, the ball lock on the quadrant only prevents the lever from returning to neutral. This hold coounter pressure against the spring at the hydro. The spring is for helping to compensate for wear in the linkage so neutral always returns to the same place. The ball lock will let you advance the quadrant without releaseing the ball lock lever, just not return it to neutral. They used this style on the B-series hydro's and the Powermax's. Roy, there is no intermediate spring inside the linkage on the B-series. It's a solid link to the hydro. The spring referanced here is on the crank arm of the hydro opposite the linkage and keeps pressure on the linkage all the time in the same direction.
JimS Posted April 22, 2006 Posted April 22, 2006 I am not sure what the linkage setup is on this model but I have had worn linkage bushings on my Pmax that would allow the hydro speed to change without moving the lever. See if that applies to your setup.
richp Posted April 23, 2006 Author Posted April 23, 2006 Thanks guys, If it ever stops raining, I will dig it out of the shed and check the linkage. I am sure about 3 years ago, someone had a cure for this and I thought i should remember for future reference but I forgot.Couldn't find anything in the search.
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