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Thread: Jacks and slides
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09-19-2019, 09:07 AM #1
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Jacks and slides
Has anyone had the problem of slides extending when using hitch mode setting? Slides extend when front jacks extend. Suggestions?
Thanks
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09-19-2019, 12:44 PM #2
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09-19-2019, 01:18 PM #3
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09-19-2019, 05:07 PM #4
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A couple of things to check
1) Make sure the hydraulic reservoirs full. Instruction in your owners manual, but basically with main slides in and all jacks up (need to be hooked to your TV), the fluid should be at molded line at the top of the reservoir. Mine and others have been delivered quit low on fluid. If you are low on fluid (or even if not), run your slides all the way in and out several time (3?) and then do the same with the jacks. If there is air in the system, this should purge it. Air can cause the hydraulics to act very erratic, especially if the air is in the valve body.
2) Make sure your battery is fully charge before running the hydraulic pump. I typically try to hook up, level and run the slides when on shore power (if possible). I have had problems with jacks moving while putting the slides in or out when I had a low battery and no shore power on our 310GK.
3) A bit more work, but check the bottom of the hydraulic reservoir for any signs of contamination or dirt. Even a little dirt can hold the solenoid valve partially open.
4) Also, check all hose fitting (jacks, slide pistons (easiest when slides are out), valve body, hydraulic pump, etc.) for any leaks. Air in the system (see item #1 ) does really funny things.
Let us know if you find anything.
ChrisChris & Karen
Fort Collins, CO
2017 F-350 SRW 6.7 Lariat Value CC LB 4x4
2018 Solitude 310GK - Sold 7/2023
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09-19-2019, 05:10 PM #5
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One other thought, If all the above fails to improve the situation, check the all of the solenoids (on valve body next to the pump and on top of the right (curb side) front jack) are tight.
ChrisChris & Karen
Fort Collins, CO
2017 F-350 SRW 6.7 Lariat Value CC LB 4x4
2018 Solitude 310GK - Sold 7/2023
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09-19-2019, 05:18 PM #6
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Sounds like you have a stuck valve remaining open. Running the jacks is putting pressure on the slides and causing them to open.
2019 Momentum 395
2018 Ram 3500 DRW 4.10 AISIN
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09-22-2019, 02:35 PM #7
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Thanks. Have gone through steps provided with no change. I believe it must be a stuck valve. However don’t understand why slides continue to operate correctly. Can you identify which solenoid is the slide control on the distribution block?
In any case dealer appointment in mid October. Pita for a new unit.
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09-23-2019, 06:52 PM #8
Just went through this myself. Dealer couldn't find cause. but GD said to check the valve solenoid on top is an allen wrench hole see if it is tight the one with the orange wire This was sent to me from Grand design Service
Sounds like slide valves are manually opened or valve stuck open. I would start at the slide valves, 5/32 Allen wrench turn counter clockwise finger tight. If it is still moving when you run the landing gear, un plug the coil on the valve and operate. If it still moves replace the slide valves.
Robert (Jay) Loomis
Customer Service Rep
Grand Design RV
11356 CR2
Middlebury, IN 46540
574-825-9679 EXT 1819
574-825-9249 – fax2020 Grand Design Solitude 344GK
B&W Companion 25,000
Disc Brake conversion
3 - X-Factor
MORryde pinbox
2007 GMC Topkick C5500 Duramax 6.6
1 Wife 3 Scotties
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09-30-2019, 10:30 PM #9
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310GK Bounce When Towing
Today, 10:26 PM in Fifth Wheel Hitching Topics