11-04-2016, 12:22 PM
Please take a second look. I have made a change to the wiring colors.
Orange/black is obviously 12+, Orange/white is LR up.
Maybe it would help if we started in a different place. Let's start with a fundamental understanding of how the leveling system works and how it is controlled from your dash.
When the coach is in Travel, there are three pneumatic valves, called the height control valves, that either add or release air from the air bags depending upon how far the axle is from the frame. There is one each above the drive tires, right and left. And there is one in the center of the coach above the front axle. As long as you have air supply those valves will maintain a certain distance between the tires and the coach. The air from the three HCVs (height control valves) has to pass through the six pack to get to the air bags. There are two valves or solenoids on the six pack that have to open for the air to get from the HCV to the air bag. Those solenoids should be energized anytime the ignition is on, and the coach is in Travel mode.
When you are parked and you want to level the coach, the Leveling toggle is moved to Level. First of all the travel solenoids are closed, so that takes the HCV out of the pneumatic loop. There are four additional solenoids on the six pack. Left up, left down, right up, and right down. There is also supply air to the six pack. When one of the up toggle switches is activated it opens the up solenoid for that side and allows supply air to flow into the air bag. When one of the down toggle switches is activated, the down solenoid opens and air is exhausted from the air bag.
The key to understanding the switches and the logic of the six pack is that the HCV must be isolated from the air bags before any leveling can occur. If it were not, as soon as the coach corner was raised or lowered, the HCV would attempt to bring it back to the set distance between the axle and the coach body. That means that the coach can never be in both Travel mode and Level mode at the same time.
If you have the time you might want to read the first section of this manual to get a much better explanation of this system.
http://www.hwhcorp.com/ml20635.pdf
Keeping in mind that you have manual switches instead of the auto control panel.
Orange/black is obviously 12+, Orange/white is LR up.
Maybe it would help if we started in a different place. Let's start with a fundamental understanding of how the leveling system works and how it is controlled from your dash.
When the coach is in Travel, there are three pneumatic valves, called the height control valves, that either add or release air from the air bags depending upon how far the axle is from the frame. There is one each above the drive tires, right and left. And there is one in the center of the coach above the front axle. As long as you have air supply those valves will maintain a certain distance between the tires and the coach. The air from the three HCVs (height control valves) has to pass through the six pack to get to the air bags. There are two valves or solenoids on the six pack that have to open for the air to get from the HCV to the air bag. Those solenoids should be energized anytime the ignition is on, and the coach is in Travel mode.
When you are parked and you want to level the coach, the Leveling toggle is moved to Level. First of all the travel solenoids are closed, so that takes the HCV out of the pneumatic loop. There are four additional solenoids on the six pack. Left up, left down, right up, and right down. There is also supply air to the six pack. When one of the up toggle switches is activated it opens the up solenoid for that side and allows supply air to flow into the air bag. When one of the down toggle switches is activated, the down solenoid opens and air is exhausted from the air bag.
The key to understanding the switches and the logic of the six pack is that the HCV must be isolated from the air bags before any leveling can occur. If it were not, as soon as the coach corner was raised or lowered, the HCV would attempt to bring it back to the set distance between the axle and the coach body. That means that the coach can never be in both Travel mode and Level mode at the same time.
If you have the time you might want to read the first section of this manual to get a much better explanation of this system.
http://www.hwhcorp.com/ml20635.pdf
Keeping in mind that you have manual switches instead of the auto control panel.
Richard and Rhonda Entrekin
99 Newell, 512
Maverick Hybrid Toad
Inverness, FL (when we're home
)