Inoperative air step

[Ralph L. Fullenwider]

Kevin:

In your 86 there is a single relay and it is located behind the drivers
headlight panel. That is the relay that changes state when the in or out
limit switch are made telling the electronics which way to go. There is
also a strip switch glued under the edge of metal flashing and that strip
goes bad, most of us just cut the wires, it was to appease the OSHA Gods,
I know of no one that can stand on the step and close the door to retract
the step.

The Groco pumps are available try this
page,,
http://commerce1.cera.net/tacbusparts/se...?cat_id=64

Look down the page at the pump with the brass head.

Safe travels,

Ralph and Charolette Fullenwider
84FC35 "Ruff Diamond"
Duncan, Oklahoma

At 01:28 AM 1/17/2008 +0000, you wrote:
>I finally decided to tackle trying to fix my inoperative air step. I
>downloaded the air step trouble shooting guide in the files section,
>but I'm not sure where to look for the 4 relays (they are not in the
>right overhead load center)....the guide is for a 89 SP and I have an
>86 PT.
>
>Also, if someone can possibly help me troubleshoot...the step extends
>when airing up the BB, but I can not make it retract... it will not
>retract in a locked position...it just kind of flops. Any help???
>
>Also, are the aux water pumps still available (the one that helps the
>coolant flow to the front heaters...my circuit breaker keeps
>breaking/resetting).
>
>Thanks....
>
>Kevin McKeown
>Yorba Linda, CA
>1986 38' PT