tvfrfireman

Portland, Or

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I have a forty foot motorhome that is our first. I had a problem on our last trip breaking camp. Getting ready to go I raised all four jacks but the front left was fully retracted but sitting on the block I used due to having a low corner on our site. Once I set the block down under the jack when setting up, there was one and one quarter inch of space between the pad and wood block. When getting ready to leave I raised the jacks and started the engine to fill the airbags but the coach remained on top of the block. What happened to the one and one quarter inch space I had? We had to dig and chip away at gravel to get the block out. Is there something I am doing incorrectlyY. Thanks for any help.
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fj12ryder

Platte City, MO

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Did the motorhome raise at the other corners when the air suspension was up to pressure?
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Grit dog

Black Diamond, WA

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You couldn’t raise it back up with the jack and put a couple boards or something under the nearest tire?
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wa8yxm

Davison Michigan (East of Flint)

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What happened? You loaded all your "Travel stuff" and thus loaded it down.. likely about 1.5"
This is easier with a car... Measure the bumper height with the car basically empty. Do this at the rear bumper.. Now open the trunk and set 3 or 4 5 gallon pails of water inside (however many you can fit) and measure the bumper height again.. Now remove the buckets .. carefully (you might put only 4 gallons in)
Each gallon is what about 8.6 pounds so 4 times 4 gallons is a bit over 250 pounds.. Now imagine all the stuff you put in the RV.
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SuperBus

Michigan

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You may have an intermittently failing leveling valve on that corner (for your air bags). If that is the case, obviously you'd want to get it replaced to resolve the issue. But, in the meantime, dumping air using your jack controller might correct the issue by moving the leveler through some of its stroke, thus getting it to allow air back into the air bag and raise that corner of the coach back up.
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Grit dog

Black Diamond, WA

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wa8yxm wrote: What happened? You loaded all your "Travel stuff" and thus loaded it down.. likely about 1.5"
This is easier with a car... Measure the bumper height with the car basically empty. Do this at the rear bumper.. Now open the trunk and set 3 or 4 5 gallon pails of water inside (however many you can fit) and measure the bumper height again.. Now remove the buckets .. carefully (you might put only 4 gallons in)
Each gallon is what about 8.6 pounds so 4 times 4 gallons is a bit over 250 pounds.. Now imagine all the stuff you put in the RV.
I’m trying to imagine any sort of reasonable scenario that compresses the front suspension an inch and a half due to loading up “travel stuff”. And even moreso how the camper got that much heavier “after” a comping trip where the same stuff goes home minus the heavy consumables.
But moreso I’m trying to imagine how even a wacky theory like that applies to air ride….
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Grit dog

Black Diamond, WA

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SuperBus wrote: You may have an intermittently failing leveling valve on that corner (for your air bags). If that is the case, obviously you'd want to get it replaced to resolve the issue. But, in the meantime, dumping air using your jack controller might correct the issue by moving the leveler through some of its stroke, thus getting it to allow air back into the air bag and raise that corner of the coach back up.
A more likely scenario for sure. Because the ride height sensors should have allowed to hit the same height.
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way2roll

Wilmington NC

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I would guess a combination of a few things. An inch and a half isn't that much space. My guess would be your tires were hot and higher psi when you set up camp. After sitting, the lower temp/psi caused your entire rig to sit lower once down off the jacks. If that's the lowest spot, that's where the weight will shift and cause the largest drop. Like another poster said, you could have jacked it up, put a board or 2 under the nearest tire and set it back down. Standard board would buy you the 1-1/2" to drive off it.
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tvfrfireman

Portland, Or

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way2roll wrote: I would guess a combination of a few things. An inch and a half isn't that much space. My guess would be your tires were hot and higher psi when you set up camp. After sitting, the lower temp/psi caused your entire rig to sit lower once down off the jacks. If that's the lowest spot, that's where the weight will shift and cause the largest drop. Like another poster said, you could have jacked it up, put a board or 2 under the nearest tire and set it back down. Standard board would buy you the 1-1/2" to drive off it.
Thanks for your response. I would have jacked it up and placed a board under the wheel but am concerned about where to jack. I am not an expert on these rigs and would hate to damage a vital part.
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Dutch_12078

Winters south, summers north

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tvfrfireman wrote: way2roll wrote: I would guess a combination of a few things. An inch and a half isn't that much space. My guess would be your tires were hot and higher psi when you set up camp. After sitting, the lower temp/psi caused your entire rig to sit lower once down off the jacks. If that's the lowest spot, that's where the weight will shift and cause the largest drop. Like another poster said, you could have jacked it up, put a board or 2 under the nearest tire and set it back down. Standard board would buy you the 1-1/2" to drive off it.
Thanks for your response. I would have jacked it up and placed a board under the wheel but am concerned about where to jack. I am not an expert on these rigs and would hate to damage a vital part.
Will your leveling jack extend enough to raise the tire off the ground enough to put a board under it? You may want to do both jacks on that end or side to avoid frame twist.
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