ka9bxg Posted February 3, 2009 Posted February 3, 2009 Freind has a sunstar with hydro lift.When it is cold the hydro lift is very slow.When warmed up it works fine.Is this common or is there a fix for the slow lift. Thanks Bob
MPH Posted February 3, 2009 Posted February 3, 2009 With 10-30 in my B series lifts going out much below zero they get slow in about 3/4 -1 hour. That's going from a shop at 60 above. How cold you talking about?
BLT Posted February 3, 2009 Posted February 3, 2009 Bob, I would say that's not out of the realm of things.
a-cman Posted February 3, 2009 Posted February 3, 2009 Maybe the wrong fluid in hydro, should be either the Simplicity hydrostatic/hydraulic fluid or type F transmission fluid. If it has the wrong fluid, it maybe to thick, until warmed up.
ka9bxg Posted February 3, 2009 Author Posted February 3, 2009 There is type f in the transmission.The hydro runs off the trans. For the temp it is at zero that it seems the worst and after one pass down the drive it is better. I guess I will have to live with it. Thanks Bob
UCD Posted February 3, 2009 Posted February 3, 2009 My new legacy XL hydraulics are slow when cold. So was the 7790. For that matter most Hydraulic systems with normal hydraulic fluid/ATF in the system are slow when cold. There is hydraulic fluid meant for low temp use but should be changed out in the summer. This gets expensive. It is a little annoying but for the couple of min until it warms up is bearable. There is a problem if it is slow after it warms up.
DMedal Posted February 3, 2009 Posted February 3, 2009 what do you do to warm up the hydraulics in winter? drive? -Don
BLT Posted February 3, 2009 Posted February 3, 2009 quote:Originally posted by DMedal what do you do to warm up the hydraulics in winter? drive? -Don The oil will heat up just by passing thru the relief valve, how hot I don't know. Just position control valve at the stop before the float on the older ones, all the way on 900's and 7100's and you'll trip the valve. You can tell it by the 'squeal'. That will heat it up. The length of time will vary depending on the ambient temperature. After a minute or so you should be to notice some improvement.
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