sgtmaj27
Model #: 5870 Ser:# 6040062
Natural Gas
Length of gas pipe feeding the generator: 6'
Size of gas pipe feeding the generator: 3/4"
How long since the last full maintenance: 1mo
How long have you experienced this problem: First time

This unit has 111 hrs on it. I received the low oil pressure warning and shutdown yesterday during weekly exercise, first time for this error. Oil level right on target and all wires connected securely to the pressure switch. Unit restarted in manual and ran for 30 minutes with no faults. Research tells me that this engine may be prone to a wave washer problem resulting in intermittent loss of oil pressure. I have several questions for this forum.

1). Is this model/serial numbered unit subject to the service bulletin for the wave washer problem?

2). If not, besides an intermittent short in wiring of the pressure switch, what other causes for this error should I look for?

3). If it could be a wave washer, what alternatives should I be considering? such as:
a. Having the $15 wave washer kit installed....most likely with considerable labor cost.
b. Replace the engine
c. Replace the unit with the current 9/8kw 7029 model and if so does my current 0H6378A Transfer panel match up to it so it is merely a wiring/ gas connection swap out?

Of course any other recommendations/insight is greatly appreciated.

Thanks
Quote
MacL
That serial number is not in the range of:

Serial number range 5262070 through 5860029.

I'd check the pressure with a gauge, and if it's good, replace the oil pressure switch. Good means steady, non-fluctuating, at least 10 psi. If it fluctuates, or takes more than a couple or 3 seconds to come up, then you really have oil pressure problems.
State your problem, not your diagnosis.
Quote
sgtmaj27
MacL;52802 wrote:
That serial number is not in the range of:

Serial number range 5262070 through 5860029.

I'd check the pressure with a gauge, and if it's good, replace the oil pressure switch. Good means steady, non-fluctuating, at least 10 psi. If it fluctuates, or takes more than a couple or 3 seconds to come up, then you really have oil pressure problems.


Thank you MacL....I shall invest in a good gauge and follow your advice.
Quote
sgtmaj27
MacL;52802 wrote:

I'd check the pressure with a gauge, and if it's good, replace the oil pressure switch. Good means steady, non-fluctuating, at least 10 psi. If it fluctuates, or takes more than a couple or 3 seconds to come up, then you really have oil pressure problems.


I was finally able to get a gauge on it today and it came right up and was a steady 35 psi for about 15 minutes. I’ve had numerous starts since the first low oil pressure warning with no problems. If it happens again, I’ll replace the switch.

Thanks.
Quote