Where to find 8V92 oil pressure sending unit?

[msksann]

Hello Ryan,

"2. What's that little one with the orange wire for? Are there two oil
pressure sensors on this engine? If so, why?"

That's a Kysor 3 psi pressure switch, there are 2 on mine, one on each
side of the oil pressure sending unit. One side passes ground over to
the two solenoids mounted a foot further down on the rail, and cuts
off the ground after 3 psi has been exceeded. (Perhaps so you can't
turn the starter over after the engine has started running.) One of
those two solenoids supplies the positive power to the starter
solenoid, while the other supplies the ground to the starter solenoid,
Bluebird redundancy(??)

I don't recall tracing out the second 3 psi switch, perhaps, if yours
is the same, you will figure out where that switch passes it's ground?

Hope this helps.

Michael Kramer
1986 PT-40 8V92
San Diego, CA


--- In WanderlodgeForum@yahoogroups.com, "Ryan Wright"
wrote:
>
> OK, I think I found it. Is this it? :
http://www.ryanwright.com/tmp/sensor.jpg
>
> Found that sucker on the frame rail hiding next to the muffler. If
> this IS it, I have questions:
>
> 1. It (the big one) looks exactly like the sensor on my Yanmar genset,
> which I replaced earlier this year AND happen to have an extra of!
> Anyone know if they're cross-compatible before I swap them and fry
> something?
>
> 2. What's that little one with the orange wire for? Are there two oil
> pressure sensors on this engine? If so, why?
>
> 3. Looks like there are a couple of extra ports on that manifold...
> can I simply hook up my mechanical gauge I just bought to install in
> the engine compartment to one of them?
>
> Thanks!
>
> -Ryan
> '86 PT-40 8V92
>
>
> On Mon, Oct 20, 2008 at 5:07 PM, Ryan Wright wrote:
> > No wonder I couldn't find it. Thanks for the responses, I should be
> > able to find it there. I assume it's connected with a hard line?
> > Anyone have a picture handy?
> >
> > -Ryan
> > '86 PT-40 8V92
> >
> > On Mon, Oct 20, 2008 at 3:27 PM, Scott Forman <scottforman75@...>
wrote:
> >> This is the location on my 86 8v92 as well.
> >>
> >> Scott Forman
> >> 86 PT38
> >> Memphis
> >>
> >> --- In WanderlodgeForum@yahoogroups.com, Leroy Eckert
> >> wrote:
> >>>
> >>> On mine it is not on the engine. It is on the frame rail up high on
> >> the curb side just behind the exhaust exit point.
> >>> Leroy Eckert
> >>> 1990 WB-40 Smoke N Mirrors
> >>> Dahlonega, GA
> >>>
> >
>