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Old 09-29-2016, 01:32 PM   #1
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Generic question- level front or back first in class A?

I know I've seen this but can't locate it. I read that if you level the wrong way you risk popping your windshield. Have manual system, so should I level front first or rear?

Many thanks!
Bud
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Old 09-29-2016, 01:39 PM   #2
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Quote:
Originally Posted by bud01234 View Post
I know I've seen this but can't locate it. I read that if you level the wrong way you risk popping your windshield. Have manual system, so should I level front first or rear?

Many thanks!
Bud
I would imagine that twisting the motorhome could cause problems but i've never heard that front or back first makes a difference. On ours with manual jacks, i always start with the low end or side, then lower the other jacks until they hit the ground.
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Old 09-29-2016, 02:10 PM   #3
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My manual stats lower the front jacks till they hit the ground first.
I have been in situations where I've lowered the rear first with no problems.
My front jacks work together and the rear are independent to actually do the left to right leveling so i understand why I should lower the front till solid, then level with the rear.
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Old 09-29-2016, 02:21 PM   #4
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I have three jacks, one front, two rear. The rears work together to raise the rear, independently to level side to side. I raise the low side first, then put the others to ground for stability. I hate that, if you overshoot, you have to raise them all and start over. It drops the coach rather abruptly.
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Old 09-29-2016, 02:41 PM   #5
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I've had 3 motor homes, each had a different system. The one I currently have is the only one that has automatic leveling. It has a manual override, and the manual states that if you are going to use manual, that you should start with the front, so you have a pivot point. I've notice that in automatic mode its starts with the front. I could see a pivot point if I had one of those 3 jack systems, but I have 4. The system I have now runs 2 at a time depending on which button you press. All the others had individual buttons for each jack. This one took some getting used to, but I still think I liked individual control a little bit better. But it could be just because that's what I started out with.

I've actually done it about every different way you can imagine. I may be wrong and I often am, but I really don't see how you could do any real damage just from where you start. I would think that you would have to have things really out of whack to actually crack a windshield. I've never spoken to anyone who says they've actually cracked a windshield while leveling their coach.
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Old 09-29-2016, 04:17 PM   #6
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Front, back, left side, right side, it doesn't matter as long as which ever you choose is the lowest before you start leveling. I always bring the lowest up to level with the highest first before trying to get all the jacks on the ground and supporting some weight.
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Old 09-29-2016, 05:58 PM   #7
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The automatic leveling system will start by energizing the jacks at the lowest point, no matter which point that may be. I've seen our automatic system start on all four different sides, depending on the lay of the land.

If yours is a manual system, start by raising the lowest point first. The jacks always work in pairs, so you cannot twist the chassis no matter what you do.
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Old 09-29-2016, 07:35 PM   #8
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Without posting a lot of detail, automatic systems generally raise the low end to match the high end, then adjust the right or left side to level. I would do manual the same way.

Depending on the jack size and the coach weights, leveling the ends won't result in much, if any coach twist. Leveling side to side can in some cases result in significant coach twist when the sides are brought up to level. This twist can be mostly relieved by a short depression on the front jacks to raise about 1/2". This action should be the last step in leveling and can sometimes result in a quite severe drop of the front end and reflex from twist as the front jacks equalize.
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Old 09-30-2016, 05:05 AM   #9
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Quote:
Originally Posted by bud01234 View Post
I know I've seen this but can't locate it. I read that if you level the wrong way you risk popping your windshield. Have manual system, so should I level front first or rear?

Many thanks!
Bud
The manual for my 99 Dolphin says to lower the front jacks first and raise the front a couple of inches before using the rears to level front to rear and side to side. In the National RV Owners Forum it has been discussed it is possible to crack or pop out the windshield if that is not done. I have never had a problem following the above procedure.
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Old 09-30-2016, 06:41 AM   #10
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Originally Posted by chboone View Post
The manual for my 99 Dolphin says to lower the front jacks first and raise the front a couple of inches before using the rears to level front to rear and side to side. In the National RV Owners Forum it has been discussed it is possible to crack or pop out the windshield if that is not done. I have never had a problem following the above procedure.
chboone and Shakemaker, I like your advice best since it's based on the Dolphin manual.
I spent over an hour searching the forum unsuccessfully for this info but must've been using bad keywords. I knew I'd seen it somewhere.

I think everybody's advice was a variation of chboone's and Shakemaker's; nobody specifically advised raising the rear first which was my main concern... (Which end to start with). you guys are the greatest!
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Old 09-30-2016, 10:21 AM   #11
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Spring squat

The reason I lower the front jacks until they just touch the ground is because of spring squat. If you don't lower them first to just touch the ground and lower the backs until level it will cause the front to squat. Same way if you lower the back jacks to just touch. It works both ways but is more prevailent in the front. I had a winshield crack from a tech who released the front jack on one side that was stuck after raising it until the wheel was off of the ground. torqued the frame and broke the windshield. his company replaced it.
Mel
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Old 09-30-2016, 08:03 PM   #12
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bud01234,
Join the National RV Forum on Yahoo Groups. Once your confirmed check the file section for the onwers manuals. There is a 99 Dolphin manual there.

https://groups.yahoo.com/neo/groups/NationalRV/info
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Old 09-30-2016, 08:43 PM   #13
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From my HWH manual:

5. A lit yellow LEVEL light indicates that the end, side, or
corner is low. Push the EXTEND (up arrow) button to extend
jack pairs according to a lit yellow light. ALWAYS LEVEL THE
VEHICLE FROM SIDE TO SIDE IF NECESSARY BEFORE
LEVELING THE VEHICLE FROM FRONT TO REAR.
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Old 09-30-2016, 08:48 PM   #14
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Quote:
Originally Posted by johnhicks View Post
From my HWH manual:

5. A lit yellow LEVEL light indicates that the end, side, or
corner is low. Push the EXTEND (up arrow) button to extend
jack pairs according to a lit yellow light. ALWAYS LEVEL THE
VEHICLE FROM SIDE TO SIDE IF NECESSARY BEFORE
LEVELING THE VEHICLE FROM FRONT TO REAR.
National RV use Power Gear, not the same control panel as HWH.
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