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Old 05-22-2016, 08:49 AM   #15
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How long did you leave them in he store (retract) position? Leaving it in this position too long can overheat and damage the solenoid. PO of my coach did this and warned me not to leave in the store position too long if they don't retract. That being said, I would first go down with the fronts again and clean the wiper and piston with WD40 (per HTH) then try to retract again using a pry to help. It may be after working them a few times they will loosen up.
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Old 05-22-2016, 01:27 PM   #16
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Normal operation of the HWH system is to time out after about 5 minutes, so you would have to cycle the "Store" multiple times to start to heat up the solenoid, unless something is wrong.
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Old 05-23-2016, 07:18 AM   #17
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While ATF may work, go with what HWH recommends, WD-40.
My friend said that the HWH people in IA, had told him to use ATF. I would be surprised that WD-40 would help, other than displacing water, since I had always heard it has no lubricity. Maybe things have changed, just curious, since a bought a bottle of ATF
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Old 05-23-2016, 09:04 AM   #18
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Caution!!

Be careful about hitting the retract/store button multiple times. Every time you do you heat the retract solenoid valves that will burn them up (I've done it!!). Locate where the solenoids are located and touch them to see if they are hot before you hit again. If they are, HWH says to let them cool for 30 minutes.

When I had a 325 system and learned the $800 dollar (to fix) overheated valves situation, I simply spray the cylinder rods with WD40 (like HWH says). Never wiped them down and they retracted every time.
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Old 05-23-2016, 09:41 AM   #19
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As long as your trying all the other ideas why don't you check the fluid level in the reservoir. Also the amount of time it takes to retract can vary with the temperature. I've read up to 7 minutes. Yes you can use a 2x4 to assist in retracting them. I replaced the springs on one jack that I was having problems with and it helped a bit but cleaning the shaft was the cure. Good luck!
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Old 05-23-2016, 09:59 AM   #20
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I'm like the others and have a bar to help two of mine up. I have the new spring kits but haven't installed yet.

As noted by others - do not overheat the solenoids (constant use) and also do not run the pump (deploy jacks) with the engine off (low voltage can/does damage the pump motor).

Not sure where I read it but was advised NOT to use anything but ATF to clean the legs.
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Old 05-23-2016, 07:24 PM   #21
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I use a multi purpose helper for my problem jack. A collapsible flag pole from Harbor freight. Stiff enough to do the job, I use it collapsed for the jack, and extended for the Flags.
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Old 05-24-2016, 10:08 AM   #22
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IN MY '97 LONDON AIRE i had problem also and iwas told to oprn the t nuts by the valvles and that open the line to let them up.. then close them when up.. it worked great on mine..and i do have to use a bar to raise them occasionally as springs are originall..
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Old 05-24-2016, 10:31 AM   #23
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One other thing to check ---the fuse in line next to pump Mine melted the fuse holder! There are 3 fuses next to the pump --- Mine had two 20 Amps and a 40 Amp-- the 40 was the retract solenoid
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Old 05-24-2016, 10:44 AM   #24
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IN MY '97 LONDON AIRE i had problem also and iwas told to oprn the t nuts by the valvles and that open the line to let them up.. then close them when up.. it worked great on mine..and i do have to use a bar to raise them occasionally as springs are originall..

Do you lubricate the jacks, if after lubing them do you still need the bar?
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Old 05-24-2016, 11:28 AM   #25
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yes i do lube them..i leave them down all winter so i clean and lube them every spring to start...but at the same time i did the t-nuts i added a quart of fluid, just tranny fluid and i haven had a problem except a little help now and then.



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Do you lubricate the jacks, if after lubing them do you still need the bar?
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Old 05-24-2016, 05:52 PM   #26
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yes i do lube them..i leave them down all winter so i clean and lube them every spring to start...but at the same time i did the t-nuts i added a quart of fluid, just tranny fluid and i haven had a problem except a little help now and then.

I do not have the expertise to tell you if the tranny fluid will hurt you system, if I were to guess the only harm would be to the seals in the system. I would reach out to HWH for an expert opinion.
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Old 05-24-2016, 06:41 PM   #27
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Hydraulic fluid is transmission without the red coloring. Even HWH says that in a pinch, you can use transmission fluid in the system.
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Old 05-24-2016, 07:04 PM   #28
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See, there is an expert.
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