[Richard]

Upper is left. Lower is right. The two closest to the bulkhead come FROM the ride height control valve (HCV). The two in the middle of the block feed the air tanks that in turn feed the air bags through some huge air connectors.

The two solenoids closest to the bulkhead are Travel.
The two in the middle are Down
The two furtherest away from the bulkhead are Up.

The 3/8 air line into the block is the supply air for raising the coach.


I'll do my best to explain how the six pack works. The HCV is fed from a separate air supply line. When the travel solenoids are energized(the two closest to the bulkhead) it connects the HCV to the air tanks that feed the air bags. When the coach is off ALL solenoids are deenergized and the air bags are isolated. When in Level mode, the the other four solenoids can be energized to add or subtract air from the tanks that feed the air bags.

Except in the front. The two airlines from the HCV in the front are teed together so that in Travel mode the air bags in the front are tied together pneumatically. That allows the front to float side to side and to provide three points of leveling for the chassis.

When the coach is not in Travel mode, the front air bags are individually isolated.

Clear as mud right?

All this subject to a somewhat sketchy memory chip, mine.