Wild Generator Oil Pressure

[Gus]

After charging the battery externally 12 hours it finally
reached a full charge. I thought it may have had a bad cell, but it’s
ok. I installed it and started the generator. It started up fine just
like it always had in the past. All the gauges seem to be working properly.
I paid close attention to the oil pressure and it indicated in it’s
normal range. The switch was not dim as before and I was able to shut it
down and power it up from all the switches. I believe the low voltage in
the battery is what caused the wild readings as was suggested. I have not
checked the ground to the gauge yet but intend to.

I still don’t understand why the battery is not being
charged. Is it supposed to be charged by the generator as I’m going
down the road or is the charger/inverter supposed to do it? Even if nothing
is charging it, would the voltage be consumed after 15hours of runtime?
What is consuming it? I thought that the battery was only needed to start
(and now obviously stop) the generator.

Does anyone have any suggestions as to how I can keep it charged
while I’m on the road? It is a dedicated battery for the genset.

In the past I have been using a small battery charger while it
sits. I didn’t have any problems with that set-up because I had not
taken the bus out for any extended runs. My trips had always been
relatively short.

Thanks for all the info and suggestions. I’m still
relatively new to bird ownership but I’m learning thanks to all the
support I get from the good people in this group.

Gus Rodriguez

89 pt40 8v92

Pearland, Texas

From:
WanderlodgeForum@yahoogroups.com [mailto:WanderlodgeForum@yahoogroups.com] On
Behalf Of Gregory OConnor

Sent: Tuesday, August 05, 2008 4:07 PM

To: WanderlodgeForum@yahoogroups.com

Subject: [WanderlodgeForum] Re: Wild Generator Oil Pressure

some times a high oilpressure at low idle
followed by a drop off to

less than idle reading but more than normanl as you increase rpm

proves the relief is being used in the filter. you would think

Chatter in the gauge is also an indication but i dont think the

pressure can fluctuate fast?? when a filter gets dirty quick, it

could be a bearing got ate up and clogged the filter media.



Your situation sounds like a battery ground especially if the

genset is started by a dedicated battery. for it to be an alt issue

that kills the battery while the engine is running, the fuel shut

off would close and stop the genset. Since the genset ran on a

battery either dead or not connected properly, the alt must have

been supplying the juice to keep the fso open?????? it would be

helpfull to know if the battery was actually dead, if not it could

be just a bat terminal issue



I guess the relay power to throw the fso is via the genset

battery???? cant understand why you could not remove power to the

fso??? you would think that relay is normaly closed?????



GregoryO'Connor

94ptRomolandCa



--- In "WanderlodgeForum%40yahoogroups.com",
"Leroy A. Eckert"

wrote:

>

> --- In "WanderlodgeForum%40yahoogroups.com",
"freewill2008"

> wrote:

>

> You can easily check the gauge function for integrity by going

here.

> http://downloadingfiles.co.uk/teleflexfiles/gauges/Oil%20Pressure%

20Systems.pdf

> Leroy Eckert

> 1990 WB-40 Smoke N Mirrors

> Dahlonega, GA

> Royale Conversion

> >

> > Hi Gus -

> >

> > The oil pressure guage is surely electric. The genset engine

> > controls would also be electric and possibly electronic.

> >

> > Now, you also mention the battery is low or dead. Your

electric

> > guages and engine controls will certainly be erratic if the

voltage

> > is wrong.

> >

> > Try charging (and doing whatever is needed to KEEP a charge) and

then

> > see how everything works.

> >

> > Best of luck.

> >

> > Bob Griesel '84 FC31 WLII WA

> >

> > --- In "WanderlodgeForum%40yahoogroups.com",
"Gus" wrote:

> > >

> > > Hello everyone,

> > >

> > >

> > >

> > > On my last trip, I noticed the generator oil pressure

bouncing

> > wildly

> > > between 80 & 120. I did not notice it creep up. It had been

just

> > under 30

> > > psi for most of the trip (15hours). Water temperature was at

160

> > F. I was

> > > alarmed so I hit the switch to turn it off. It did not shut

down.

> > I pulled

> > > over, opened the generator bay and access to the controls. I

hit

> > the off

> > > switch at the box and nothing. The engine did not feel too

hot to

> > the

> > > touch. The radiator and the coolant reservoir did not feel

too hot

> > either.

> > > I was still alarmed so I pulled the fuse to shut it down. I

> > reinserted the

> > > fuse and tried to start it, but was unsuccessful. I then

checked

> > the

> > > battery and it was dead.

> > >

> > >

> > >

> > > Other information:

> > >

> > >

> > >

> > > 1) I had just replaced the battery and was aware that the

> > battery was

> > > not being charged by the battery charger or the generator.

> > >

> > > 2) As I was trying to shut the generator off, I noticed

that

> > the switch

> > > was lit dim. Is that because the batt. Was dead (8 volts)?

> > >

> > > 3) As I was checking the battery, I felt a very small

> > electric charge

> > > on my left knee which was touching the bus frame. Should I be

> > concerned? I

> > > will investigate that charge further tomorrow morning. It may

be

> > unrelated.

> > >

> > > 4) I am now charging the battery so I can try to start

the

> > generator in

> > > the morning. I think it will start but I will not let it run

for

> > long until

> > > I figure out the Pressure problem. Is battery voltage

required to

> > shut it

> > > off?

> > >

> > > 5) Right now all the gauges read zero except for the oil

> > pressure.

> > > The needle is stuck at 60 psi.

> > >

> > > 6) By the way, I have a 13 kw generator with a Yanmar

engine.

> > >

> > >

> > >

> > > Any help is greatly appreciated.

> > >

> > >

> > >

> > >

> > >

> > > Gus Rodriguez

> > >

> > > 89 pt40 8v92

> > >

> >

>