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Old 10-14-2012, 01:08 AM   #1
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Jacks won't stay down

'91 Sportscoach Cross Country - After jacks down and coach is level engine is shut down. Jacks retreat based on the amount of weight in that particular area. From the little information I have received the system has not been checked since installed. What are the possible solutions? Currently traveling and issue is a annoyance.Click image for larger version

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Old 10-14-2012, 08:23 AM   #2
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There are several mfgs of jack systems, many models along with hydraulic & electric. So we would need to know what system you have.

Generally speaking if you have a hydraulic system, and the jacks are retracting on their own, you probably have a bad valve or controlling solenoid allowing the fluid to go back to the reservior. This is providing there are no leaks anywhere.
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Old 10-14-2012, 08:49 AM   #3
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Originally Posted by clyon51 View Post
There are several mfgs of jack systems, many models along with hydraulic & electric. So we would need to know what system you have.

Generally speaking if you have a hydraulic system, and the jacks are retracting on their own, you probably have a bad valve or controlling solenoid allowing the fluid to go back to the reservior. This is providing there are no leaks anywhere.
I had that issue and a exercise of running each jack from up to full down four or 5 times cleared that up, followed by changing the 20 year old fluid and doing it all over again. Sometimes a particle of dirt almost too small to see with the naked eye can mess up a hydraulic system.
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Old 10-14-2012, 10:31 AM   #4
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Do you see any fluid leakage at the jacks cylinders?
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Old 10-14-2012, 10:54 AM   #5
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Originally Posted by BeagleSlave View Post
'91 Sportscoach Cross Country - After jacks down and coach is level engine is shut down. Jacks retreat based on the amount of weight in that particular area. From the little information I have received the system has not been checked since installed. What are the possible solutions? Currently traveling and issue is a annoyance.Attachment 27626
Your unit looks almost exactly like mine, I have a 91 Silver Eagle, oshosh frame, ford powered, do you have the HWH integrated four lever system with the pump up front
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Old 10-14-2012, 10:56 AM   #6
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No leaks.

On the road, not going to be able to run jacks up and down and change fluid for at least a week.
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Old 10-14-2012, 11:32 AM   #7
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If they are HWH jacks, leave them up and check the fluid level. Just because you don't see a leak doesn't mean the fluid isn't low.

Mine tend to "bleed down" when the fluid gets a bit low. It will drip a bit at the fittings on the pump.

Easy check/fix to start with.
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Old 10-15-2012, 12:14 AM   #8
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The system is HWH. I can only find one reservoir and the filler is not in a position that the fill level can be observed. How would you suggest i proceed?
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Old 10-15-2012, 12:06 PM   #9
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The silver cap (if not coated with oil and dirt) is on top of the reservoir.
With the jacks up, unscrew it and take it out.
There is a dip-stick on it. Look at it and see where your level is.
You may need to wipe it off, screw it back in and then check it to be sure.
If it needs fluid, I believe it is Dextron III ? fluid. Not at home right now.
A small funnel (short one) will make adding fluid easier.
Get it to the full mark and you should be good to go.
Re-check it in a week or so after you have used them some.

Good luck. Mike
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Old 10-18-2012, 08:21 PM   #10
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The cap is black and no dipstick, did add more fluid and that seems to have fixed the issue. on the road so will have ample opportunity to test the fix.
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