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Old 04-21-2016, 01:09 AM   #11
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If your system uses springs to pull the jacks up, there's probably little if any pressure in the lines when the jacks are up. If there's no springs, then your system uses pressure to both lower and raise the jacks and there will always be fluid under thousands of pounds of pressure somewhere in the system. If yours use hydraulic pressure to raise the jacks, you need to relieve the pressure before removing any of the lines.

Check the hydraulic control uint for one of two things that will let you bleed off pressure.
1. A "quick flush port" - if you find one, you can loosen it from the housing and relieve the pressure in the system.

2. manual controls on the solenoids that allow you to open them up. You can use this to relieve pressure if there's a path for the fluid to return to the resevoir. As already recommended, disconnecting the pump and cycling the switch a few times should relieve the presssure but i wouldn't guarantee it will.

Phil
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Old 04-21-2016, 11:50 AM   #12
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PMSHERMAN,

I have an upper and lower line to the ram in the landing leg, I imagine that indicates that the hydraulics raise and lower the leg. You also mentioned a manual control on the solenoid, I believe the hex nut on the end of my solenoid on the leg is likely such a control. If so, could I not shut off the flow to the ram by shutting it down?

Ed
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Old 04-21-2016, 12:19 PM   #13
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The following link should take you to the LCI site and you will be able to print out the LCI procedure for replacing the landing gear cylinder
http://www.lci1.com/assets/content/s..._Cylinders.pdf

Hope this helps with the confidence to proceed.
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Old 04-24-2016, 10:47 AM   #14
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For safety's sake I would hitch up to your TV to support the camper while making the repair. I'm not a huge fan of relying on blocks to steady your camper. It could start to wobble while wrenching and down it'll go without warning and possibly crush you. I have no knowledge of hydraulics but I would guessing that the other "good" landing gear leg may not support any weight once you start opening hydraulic lines.
Good luck and be safe!!


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Old 04-24-2016, 03:27 PM   #15
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Once you break the first line on the landing, the other one is useless. It will not support anything. A good blocking system under the frame would more than suffice. Only talking 2-3k pounds. I do this with 10's of thousands of pounds all the time.


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Old 04-24-2016, 06:02 PM   #16
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Quote:
Originally Posted by edshirl View Post
PMSHERMAN,

I have an upper and lower line to the ram in the landing leg, I imagine that indicates that the hydraulics raise and lower the leg. You also mentioned a manual control on the solenoid, I believe the hex nut on the end of my solenoid on the leg is likely such a control. If so, could I not shut off the flow to the ram by shutting it down?

Ed
The only way I know to minimize pressure in the system is to start with the jacks up and lower them part way. There will only be enough pressure in the system to move the jacks.

An opened (unscrew it from the fitting) quick flush valve will allow pressure to bleed off. You can catch the fluid in a bucket.

Phil
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