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Old 07-22-2011, 09:42 PM   #1
JWJ
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HWH Jacks

I have a 2001 40' FDSS purchased last fall. The HWH leveling system appears to function until the front jacks have to lift the unit to any degree. When the front jacks begin to lift, the unit immediately shuts down.
I travel with 2 other 01 Alpines and when looking at the front jacks I noticed that the front jacks on my unit are considerable smaller in diameter than the other units.
In researching the part numbers on my unit through the HWH website I found that my jacks are rated at 6000# on the front and 9000# on the back, while the jacks on the 01 units of my friends Alpines are rated at 12,000#.
I have had my unit at HWH in Moscow, Iowa. They reported that they where getting a low voltage to the control panel except when the unit was running. They seemed to be of the opinion that my batteries needed to be replaced.
HWH did suggest that I move the 9000# jacks to the front and install new 12,000# jacks on the back.
I am replacing the batteries this weekend, as they do need to be replaced, but I am skeptical that this is going to correct my leveling system.
I was wondering if anyone had any issues with their unit related to the jacks.
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Old 07-22-2011, 09:53 PM   #2
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JWJ,
I have talked to several Alpine owners who have moved the rear jacks to the front and put heavier jacks on the rear. They report this helping tremendously with leveling and stability when the jacks are down.
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Old 07-23-2011, 08:46 AM   #3
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HWH doesnt like low voltage--test: try leveling with shore power plugged in or genset running and bat inverter/charger on. HWH draws pretty good amps [especially when you are lifting the front end] so if your bats are weak, the extra flow from the charger might give you a different outcome--worth a try.
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Old 07-23-2011, 09:07 AM   #4
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Hi JWJ,
Old Scout is right. Do nothing with the jacks until new batteries are installed and you have tried leveling with the new batteries and what Old Scout suggested.
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Old 07-23-2011, 09:49 AM   #5
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Low voltage can come from low quality connections also. Corroded cable ends within the insulation, & loose ends. When getting batteries its a good time to do an up close & personal check of all cabling. Then when the new batt's are in, do a voltage draw-down test at the pump when the HWH pump kicks on. Occasionally the only time you will find a voltage problem is when the load is applied.
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Old 07-24-2011, 01:55 AM   #6
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Yes, we can speak from first hand experience that corroded cables ends can really cause a problem with the jacks! We had several new cables made up - what a difference when you have good connections to good, well charged, batteries!

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Old 07-29-2011, 09:24 PM   #7
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My HWH panel would give me a low voltage warning sometimes. Turned out to be corrosion of the inline fuse holder close to the pump. I have the smaller jacks and they work fine on my coach.
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