Watching a few vids on replacement/repair/springs/etc...
It appears to me that if you break down the air suspension down to basics, there is simply an airline going into the tops of each shock and air flow in/out is controlled by a solenoid/controller/compressor.

Can I just remove airlines from the factory compressor (disconnect at compressor), inset a t-fitting with pneumatic connectors and a schrader valve?

Pneumatic fittings are under $5, schrader valves and pneumatic lines are pretty cheap as well,...

Pneumatic fittings

The air pressure would be equally balanced through t-fitting and system is pressurized/inflated/deflated via the schrader valve? This eliminates all electronic control, would it cause strange handling or in anyway affect driveability?

Need to lower or raise suspension?
**Just use the schrader valve with factory compressor and it that eventually conks out, a cheap tire inflator.

Super easy to do.
Super cheap.
Super simple!

But in anyway unsafe?
* Truck hasent been offroad for a couple of years (unfortunately), only doing about 5000km per year with this truck/winter truck.

 

yes you can tee the 2 lines to a Schrader valve. very common
but if theres a leak they will both deflate. probably would happen with stock as well.

 

Awesome!
Are there any strange driving dynamics?
Is a pressure isolator between the 2 shocks required?
Its in my mind that in a highways speed cornering situation that an equal pressure system would cause extra lean in rear suspension.
* turning right transfers weight to the left side, more weight causes left side to compress and push more air to right side causing vehicle the lean further...Not sure if that makes any sense hope you guys understand what I'm saying?

 

the dynamics would work more like a rear stabilizer bar but I'm sure there might be issues maybe with uneven weight distribution. if in doubt you can just run a shreader valve to each bag instead of using a "T". then you can compensate for un even loads. that's why the OEM system has a sensor on each side. it does it automatically for you.

 

Thanks for the info!
Happen to know the air pressure that is held in stock system?
So I know many psi to inflate it to?
Also happen to know max pressure?
So I can still maintain "offroad mode?" lol

 

no i would not know off hand. i guess to find the pressure you would have to fill to stock ride hight.

 

According to the Tech2, normal ride height = 65 psi and extended ride height (+2") = 90psi. However there is a cautionary note about these figures.

The Tech2 reads 42psi even with the pressure sensor unscrewed from the manifold, it should be 15psi i.e. a discrepancy of 27psi.

So the above figures may need adjusting i.e. 38, 63 and 15 respectively.

Still it gives you some idea to work with.

 

This information was a great help to me. I had a bag deflating sporadically and bought some replacements. Turned out it wasn’t the bag and it was the manifold, so I ran my new lines to ball valves and then to a Y junction and then onwards to the fill valve.

I found that 58-60 Psi has the back sitting level and then I close off the ball valves. That way I can level and allow it to still work independently.

Got a 150 psi portable inflator that does the job nicely. Now I just need to find one of the plug in modules that stops the service message to the dash. I have seen them paired with spring replacement kits but not separately yet, but O am in no rush.