Westerbeke no longer stocks the temp switch for my 1986 W21, but was able to find one at Seattle distributor.
On Fri, Jun 7, 2019 at 6:08 AM Dennis C. via CnC-List <cnc-list@cnc-list.com> wrote: > Nathan, > > Was the alarm continuous or pulsating? > > The low oil pressure alarm, i.e., <5-10 psi, should be a pulsating alarm. > If the oil pressure was OK, this alarm should be silent. > > The high temperature alarm is a continuous sound. On my 25XPB, the high > temperature alarm is a separate SWITCH. The water temperature gauge takes > a signal from a SENSOR. > > If the alarm was continuous, I'd suspect the high temperature switch. > Look at the gooseneck, you should see two wires, one going to the > temperature sensor, one to the temperature switch. > > Dennis C. > Touche' 35-1 #83 > Mandeville, LA > > On Thu, Jun 6, 2019 at 9:25 PM Nathan Post via CnC-List < > cnc-list@cnc-list.com> wrote: > >> Hello, >> >> On the way back to the marina this evening the oil pressure alarm went >> off after having motored about 10 minutes (and previously an hour earlier >> motored 20 minutes or so out). I have a Westerbeke 20B2 diesel in my >> boat. We have the admiral style control panel so that has both the >> temperature and oil pressure gauges as well as the alar buzzer. Everything >> looked normal on the gauges with the oil pressure reading about 40 psi at >> 2500-2700 rpm (manual says 35 - 60 is normal so maybe slightly on the low >> side but still in range). The same buzzer is connected to the over >> temperature alarm as well but temperature also seemed fine and cooling >> water was flowing. I shut down the engine and checked the oil level - >> which was just fine, right where it had been earlier in the day at the full >> mark. Given that we were in the middle of the channel and everything >> seemed to check out I ended up deciding to start her again and motored the >> remaining 10 minutes or so back to the marina (with the buzzer going the >> whole time). The oil pressure stayed at 40 psi until I slowed her to an >> idle at which point it dropped to 25-30 psi. I think that is pretty >> typical. According the the manual the buzzer should sound at below 10 psi >> as it does when you first start the engine. >> >> My question is: Do I assume that the sending switch for the oil pressure >> alarm is faulty and order a replacement? Is there anything else I should >> check or verify to ensure that the oil pump is in fact working correctly >> and the oil is getting distributed through the engine? Is there another >> part I should look into that could be causing this behavior? >> >> Thanks! >> Nathan Post >> S/V Wisper >> 1981 C&C34 >> _______________________________________________ >> >> Thanks everyone for supporting this list with your contributions. Each >> and every one is greatly appreciated. If you want to support the list - >> use PayPal to send contribution -- https://www.paypal.me/stumurray >> >> _______________________________________________ > > Thanks everyone for supporting this list with your contributions. Each > and every one is greatly appreciated. If you want to support the list - > use PayPal to send contribution -- https://www.paypal.me/stumurray > > -- Excuse the brevity. Sent from my phone.
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