hydraulic fan oil and filter

[timvasqz]

Not shure but I think the light signals that the filter is clogged
enough to cause a filter bypass path to be used??? I think high
filter pressure opens a valve (and glows a light). the open valve
lets oil bypass the compramised filter to continue a path of which is
now unfiltered hydrolic oil???? many oil filters have a bypass
spring in the bottom to prevent pump damage. if the pump doesnt pass
fluid it burns up cause it spinns constant with or without fan or
steering use.

Greg ofTim&Greg
94ptCa

--- In WanderlodgeForum@yahoogroups.com, "Dan Williams"
wrote:
>
> You are right, it runs the power steering and fan using 10w - 30
motor oil.
> 20 quarts. I wonder if there is a way to extend the change
interval. The
> instructions say to run the engine at 2100 rpm and if the red light
on the
> rear switch panel comes on then change the oil and filter. I don't
know how
> one man can run the engine at 2100 rpm and check the light on the
rear
> switch panel at the same time. Seems like the light should be on
the dash
> somewhere.
>
>
>
> _____
>
> From: WanderlodgeForum@yahoogroups.com
> [mailto:WanderlodgeForum@yahoogroups.com] On Behalf Of timvasqz
> Sent: Wednesday, February 25, 2009 9:36 PM
> To: WanderlodgeForum@yahoogroups.com
> Subject: [WanderlodgeForum] Re: hydraulic fan oil and filter
>
>
>
> I think that is overkill. I bet caution is because the tank
reservoir
> is where the expansion takes place and the cold oil airspace leaves
> room for condensation. when you mix water with the hydrolic oil you
get
> a foam. the foam air can pack airpressure in the lines and screw
with
> the pump and rams. (the steering gets spongy) the fan pump and oil
also
> runs the steering on the pt's.--- In
> WanderlodgeForum@
> yahoogroups.com, "maureyroad" wrote:
> >
> > Why should the hydraulic fan oil be changed every six months as
> > directed by the owner's manual? Thanks
> >
> > Dan Williams
> > 88WB38
> > Jackson, MS
> >
>