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Old 10-04-2010, 12:45 PM   #1
hf
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Jack Retract

I read a post thanking Dave Fernandez for instructions to raise jacks if normal does not work. Instructions are losen nut on top of manifold and push store button. My question is where is the manifold . coach is a 04 36 MDDS
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Old 10-04-2010, 02:41 PM   #2
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I don't know if anyone answered your question but the valve in question is on the hydraulic pump. There should be a diagram label on the forward wall of the compartment describing the valves and their function... Dave ACE#2007920
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Old 10-04-2010, 03:07 PM   #3
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hf,

The HWH hydraulic manifold is behind the small door outside the coach just behind the driver side front tire. Inside that small door, you will find the HWH manifold with solenoids attached to it, the HWH hydraulic reservoir, the HWH pump motor, the HWH circuit board, and two relays that control voltage to the circuit and the pump.
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Old 10-04-2010, 03:10 PM   #4
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Hf,

The manifold is in the compartment just to the right of the entry door. There should be a diagram on the side wall. Not the clearest diagram IIRC. There are four solenoids on the top, which control the jacks. The four solenoids for the slides are below them. The solenoids for the jacks have T-handles on them. The solenoids for the slides have 1/4" nuts, not T-handles. You will probably hear the hissing of the fluid when you open the valves enough. The manual says to not open them more that 4 (maybe its 4 1/2) turns, but make sure you turn them enough to release the pressure. That might take a couple of turns. Unfortunately I know that from using the slide valves.

Assuming your coach is like my '04 mid door, the control circuit board panel is on the front. If you remove the two screws and clamps holding it in place, you may be able to move it to one side to get better access in there, although the jack solenoids are pretty accessible.

Once you loosen the nuts, I don't think you need to push the store button. After you release the pressure, the springs should raise the jacks. If the coach is currently raised by the jacks, you will see/hear it drop.

If your manifold area is like mine, it is likely dirty in there. Don't wear your good shirt.
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Old 10-04-2010, 06:50 PM   #5
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Quote:
Originally Posted by Dale777 View Post
hf,

The HWH hydraulic manifold is behind the small door outside the coach just behind the driver side front tire. Inside that small door, you will find the HWH manifold with solenoids attached to it, the HWH hydraulic reservoir, the HWH pump motor, the HWH circuit board, and two relays that control voltage to the circuit and the pump.
CORRECTION: I meant to say "...behind the passenger side front tire." Sorry for misleading you.
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Old 10-05-2010, 12:30 AM   #6
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Here I thought Dale had the British version of the Alpine....
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Old 10-05-2010, 12:49 AM   #7
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If opening the t-handles doesn't allow the jacks to retract, you may have what we had, a bad shuttle Valve. That is found on top (in our 2000) of the HWH manifold. I believe it is a 15mm bolt. On our year there are, IIRC 2 of the same size bolt. IIRC it is the bolt nearest the outside. Opening that bolt will allow pressure to be released. You will hear a hiss and the jacks will retract.

After wasting 2 hours at a campground in the rain, under, and in and out of the coach, Patty said have you called DAVE?

In mere minutes Dave had me talked through it and the jacks were retracted.

IIRC the Shuttle Valve was about 45-50 dollars.

I think I should get an award for using the most IIRC!!!
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