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Old 10-25-2013, 05:10 AM   #1
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RVA JII Hydraulic Jacks

I have a 1997 Monaco Dynasty and have problems with jacks not going down.
They seem to hit a relief valve and pump runs but jacks do not go down.
Does anyone have a wiring diagram for this motorhome RVA jacks? Randy

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Old 10-25-2013, 07:39 AM   #2
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I googled RVA jacks to get their website. Had lots of information on it but I don't remember if it had wiring diagrams (I couldn't understand them if they were)

2003 HR Imperial PKDD 40
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Old 10-25-2013, 08:39 AM   #3
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Have you checked the oil level?
I installed that system on my MH and the relief valve wasn't a discreet component, it's most likely part of the pump assembly.

I've got a schematic but it's a very poor quality PDF. There is no relief valve on it, just the power and control circuits.
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Old 10-25-2013, 09:57 AM   #4
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I don't think it is an electrical problem. Check the fluid level. If it is OK you may have a cylinder internal seal leaking. The cylinders can be rebuilt.
2005 HR Scepter 38PDQ
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Old 10-25-2013, 09:36 PM   #5
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I had the same problem with my right rear RVA JII jack. The pump would run but the jack would not go down. I call the factory (which is not making jacks anymore) and talked to the gentleman there. He suggested I clean the contacts on the switch on the console by the driver. I did and the jacks have been working ever since. All I did was slide the connector back and forth on the spade lug and it started working.
2003 Beaver Monterey Cummins 350hp
2001 Honda Accord Toad
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Old 10-26-2013, 05:29 AM   #6
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While working on jack problem found low power to left rear jack solenoid. Run a jumper wire to plugin near jack and it works the extend solenoid and pump pushing the jack down. The original wire and the jumper wire are required so there must be another control in the system. Can not follow wires as the go into foam sealing. Looking for a wiring diagram that shows connectors and maybe a control box.
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Old 10-26-2013, 06:36 AM   #7
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Left extend is white/red all the way to the controller.
Left retract is black all the way to the controller
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Old 10-26-2013, 07:01 AM   #8
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I would try what Wingman1 said in post 5. I would wiggle the wire like he did and maybe save a lot of looking around for something that's not there. Jim

2002 Newmar Dutch Star DP3569 330 CAT - Toad Jeep Liberty, DW is the Nagivator. Work to travel and everything revolves around the price of diesel.
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