Is this a modification

[StillRunning_60]

Still learning about my 02 Windsor on the fly. As I was Greasing the front this morning I noticed this attach to the cross member (I guess that is what you call it) but not sure what all this is but does not look like something factory. Need help identifying all this and it normal.

[ncsteve]

That is what sets the ride height of your coach. 

[StillRunning_60]

Thanks Steve. It just did not look like a normal attachment. Well I have learned something today.

[ncsteve]

That is what sets the ride height of your coach. 

 

if you need one down the road.

https://www.premiumtruckpartsusa.com/Height_Control_Valve_Hadley_Type_171.H00450CE.html

[Dr4Film]

Plus if you are under the coach do NOT accidentally touch the mechanism as the coach will drop quickly releasing the air from the bags.

[jacwjames]

I carry a spare linkage kit mechanism

https://www.finditparts.com/products/7920348/hadley-hpb450-3

[gburgman2000]

I just replaced all of my valves, one was leaking so I am sure they others were soon to follow. 

https://www.finditparts.com/products/3607973/hadley-h00450ce?sctx=eyJzIjoiaGFkbGV5IGgwMDQ1MGMiLCJzb3VyY2UiOiJhdXRvc3VnZ2VzdCIs InByb2R1Y3RfaWQiOjM2MDc5NzMsInJlc3VsdF9jb3VudCI6OSwicmVzdWx0 X2lkeCI6MH0%3D

 

Reused the long actuator bar that was on the original as the new ones were to short.  

Edited September 28, 2020 by gburgman2000

[Guest Tim503]

13 hours ago, Dr4Film said:

Plus if you are under the coach do NOT accidentally touch the mechanism as the coach will drop quickly releasing the air from the bags.

Is that what he does? Do others do that? I can see raising the rig with them but I would hope they would block each rail front and back before getting under the thing. Even then I would be worried. I was thinking it would be nice to have a pit I could drive over.

[dl_racing427]

20 hours ago, Dr4Film said:

Plus if you are under the coach do NOT accidentally touch the mechanism as the coach will drop quickly releasing the air from the bags.

NEVER, EVER get under a coach supported by the air suspension or hydraulic jacks.

A simple line failure or other malfunction could suddenly drop it to the bump stops, and there's not enough room under there for your head when that happens. 

ALWAYS use jack stands rated for the weight of the coach before getting underneath.

Imagine your family looking helplessly at your crushed skull trapped under your coach.  That few extra minutes could save your life.

[cpat_39]

I have had to replace a rear ride height valve 4 times. Three of those were necessitated by the valve being an offshore copy of the OEM made by Hadley. One of the offshore manufactured valves actually fell apart internally within 150 miles. Becareful on source and manufacturer of the replacement valve.

[StillRunning_60]

Thanks everyone for the great responses. That’s true David. I have built a ramp to drive upon out of 4-2x8’s which gave me an additional 6 inches under the coach. I want to change the air dryer desiccant cartridge but a little concerned about getting air in the system. Anyone have any pointers. 

[StillRunning_60]

Sorry about that getting air in the system I was referring to changing the coolant filter.

[jacwjames]

There should be a cutoff valve on the side of the filter base up high, turn this off and you should loose only a small amount of coolant.  Just make sure to turn it back on. 

[StillRunning_60]

Are you saying James that If I am able to turn this value off then no air will get into the coolant system.

[jacwjames]

Very little, just the volume of the filter unless you prefill with coolant or distilled water (which I never did)

 

Have you checked the SCA levels of your coolant if it hasn't been changed to one that doesn't need SCA.  You can buy filters with different levels of SCA and even a blank filter. 

Edited September 30, 2020 by jacwjames