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Topic: What is a "six-pack rebuild"? [split from Coolant level sensor location, ISM?] (Read 296 times) previous topic - next topic - Topic derived from Coolant level sensor ...

What is a "six-pack rebuild"? [split from Coolant level sensor location, ISM?]

thanks for the input and the deeper dive on the wrench required. I'm only 6 mo. into ownership of this '02 320 and can find/ learn something new everday!
heres today... when owners speak of having the "six pack rebuilt" to what are they referring?
2002 U320 36'

Re: What is a "six-pack rebuild"? [split from Coolant level sensor location, ISM?]

Reply #1 –
Quote from: Bill Petersen –
when owners speak of having the "six pack rebuilt" to what are they referring?
Your coach is split into two different sets of air bags. 4 front and 4 back. Each end has it's own six pack that is essentially a manifold with 6 solenoids. Depending on what is required, solenoids will open or close to add air, exhaust air, or give height control the the ride-height control valves (for while in motion).

The original solenoids are starting to fail here and there now and the rubber o-rings around the solenoids that seal air are starting to fail by now if they're original, which ultimately results in you not being able to stay level at a campsite. That's the reason you hear so much talk about them. There are rebuild kits available for them.

The configuration will be slightly different for coaches with a tag.
1987 Grand Villa ORED
2001 U320 4010

Not all that wander are lost... but I often am.

Re: What is a "six-pack rebuild"? [split from Coolant level sensor location, ISM?]

Reply #2 –
See Chuck's excellent adventure for a great write-up:  Working On My Six Pack

Source for replica plungers:  Brand New Replica HWH Plungers

Our documentation on the "guts" of a valve  HWH Leveling Valve  and how to do the o-rings cheaper than an HWH RAP6554 kit HWH Valve Replacement  (these were before Tom came out with his kits)

ETA - be safe out there Working Safely around your Foretravel
Learn every day, but especially from the experiences of others. It's cheaper!  - John C. Bogle

2000 U320 36' non-slide / WildEBeest Rescue
2003 U320

Re: What is a "six-pack rebuild"? [split from Coolant level sensor location, ISM?]

Reply #3 –
You can rebuild a six pack in two ways using a rebuild kit. You can take the entire manifold off the coach and do it on a bench, or you can do it under the coach with it properly on stands. You unscrew the solenoids and replace the plunger and o-rings. I did it that way but I still have a leak somewhere else. I only did my front I'll probably do the rear the same but I would wait for a warmer less windy day. I did it in the desert of Arizona and it was cold under there so I hurried. Make sure you mark everything and work on one solenoid at a time. The benefit of taking the whole thing off I believe would be to clean up the entire body and check everything for cracks which is hard to do when it's up underneath the coach. Also check each solenoid make sure it's functioning properly.
But only do it if you have problems. Still it's good to have the kit available I had mine for two years before I used it.
'99 U320 40 WTFE
Build #5462,
1500 Watts Solar 600 amp Victron lithium
2012 Jeep Grand Cherokee Overland Hemi
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