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04-28-2008, 12:35

Pete, have a close look at your lock out mechanism. Mechanically, the way mine is designed the fork on the end of the actuator is attached to the step extension arm and when it is extended the mechanism at the point of attachment goes over center. (ie. like bending your elbow backwards if you were double jointed.) This can be adjusted by screwing the fork in and out and locking the fork in position in via lock nut, at least on my bus.
If air pressure is low and the step rotation points are not properly constantly lubricated, the step will not lock out.
Typically, I use the extend switch when I enter a park and leave the step out. When I leave, I put it back in. Mine works when the door opens and closes but if the air is low, the lock out mechanism allows the step to float allowing one to bust their #@!.
Leroy Eckert
1990 WB-40 Smoke N Mirrors
Dahlonega, GA
Royale Conversion

Pete Masterson wrote:

I suspect this is the case. My step neither fully extends nor fully retracts (intermittently) in cold/snow weather. Above freezing, it tends to work. Unfortunately, the in between state makes the step somewhat treacherous when you step on it as it will swing underfoot unless you step very directly with no lateral force.

Unfortunately, the pattern is not consistent enough to create a reasonable theory of the flaw.

As for Brad's step, because it extends, retracts, and extends again, I wonder if there's an electrical connection in the
control circuit that's at fault?

Pete Masterson
'95 Blue Bird Wanderlodge WBDA 42
El Sobrante CA
"aeonix1@mac.com"

On Apr 28, 2008, at 3:18 PM, Leroy Eckert wrote:

I have a theory about cold weather step ops. Maybe good, maybe bad. The air control
valve has two adjustable exhaust ports that are exposed to dirt, snow and rain and if moisture is present in winter it will freeze the exhaust ports and not allow air to escape, hence the step will not operate. As well, if any moisture is present in the actuator it will not work correctly. Just my theory, because if it works in summer what else could it be. Bluebird disease!

Leroy Eckert
1990 WB-40 Smoke N Mirrors
Dahlonega, GA
Royale Conversion

"erniecarpet@aol.com"wrote:
My step will retract in cold weather- but the air leaking from somewhere depletes my air tanks. So I just drive with it out. Who wants to climb around under there when it's freezing and the wind blowing at 40
mph? Not me. Warm weather, everything works fine. Weird.
Ernie Ekberg
83PT40
Livingston, Montana

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