Wild Generator Oil Pressure

[Leroy Eckert]

It is running the electric fuel pump for the generator. On mine the inverter/charger charges that battery. On some models the generator has an alternator. The engine alternators should charge it going down the road in absence of the genset having an alternator. There have been several posts about a diode or resister, cannot remember which that folks have retrofitted when this problem occurred. I just cannot remember what it is, getting old. Type in search and see if you can find those threads or perhaps someone will say what they did. I think all of this is correct. Leroy Eckert 1990 WB-40 Smoke N Mirrors Dahlonega, GA Royale Conversion --- On Tue, 8/5/08, Gus wrote: From: Gus Subject: RE: [WanderlodgeForum] Re: Wild Generator Oil Pressure To: WanderlodgeForum@yahoogroups.com Date: Tuesday, August 5, 2008, 11:01 PM 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:Wanderlodge Forum@yahoogroup s.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://downloadingf iles.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 > > > > > >