etbrown4
We've read the numerous posts on this topic, however I don't see a clear , actionable answer - just yet anyway. :)

We've read that the low oil sensor supposedly drops out at 8psi, however ours is dropping out at around 25 psi. Why would this be? Are we sure of the factory spec on the cut out pressure?

We've read a little about #SIB10-13-HAC on this. Possibly It needs a wave washer replacement kit number #0J09950SRV. We're not sure if this is applicable to our unit, or another. Is there a good link to access this bulletin?

We've changed the oil filter and it's absolutely clean and clear - running synthetic.

We've read that folks have found springs or other metal in the crankcase and possibly this too is part of the wave washer issue. Not sure.

So, here we are with a 50 hr 7kw Guardian, in the middle of the aftermath of Hurricane Irene in Va, and no power.

Any suggestions would be much appreciated!
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etbrown4
7kw Low oil pressure. Wave Washer?

Updating the post above. How would you know if you have the Wave washer problem? Are there clues? What would you check?

I called an left a message for Kelly at his office, however he must be travelling etc.

Does anyone know where the service bulletin can be found?
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Skip Douglas SkipD
Kelly is on vacation until midweek. He can get the service bulletin for you but had to take that sort of thing off the forum last year.
Skip Douglas
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ohmslaw
If you have 25psi at the sensor and it faults on low oil then replace the sensor. You do not have a wave washer issue. If the unit faults intermittently you need to complete repeated start cycles to check the wave washer. The wave washer will produce oil pressure on some start up cycles and then lose it on the next.
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etbrown4
We've replaced low oil sensor - still tripping out

We've replaced low oil sensor - still tripping out.

Does anyone know the factory spec on the set point for this unit to trip on low oil pressure? We've read on this forum that it's 5-8 psi, but is that right?

On a low hour, 7kw guardian, running synthetic oil, and an ambient temperature of around 75, what's a typical or expected oil pressure range after 10 min ? tks.
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ohmslaw
Does it trip every time it starts? Can you plumb you oil pressure gauge in with the sensor to observe the pressure when it trips. you could run it for thirty seconds with the sensor wire off to see if it still trips.
Tim
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etbrown4
Trips at 25 psi

Our unit trips every time it's run, and it trips at 25psi. :)

Does anyone know the pressure setting of the low oil pressure switch? The FACTORY SPEC?

I find it hard to IMAGINE THAT it is supposed to trip at 5-8 because of the behavior of two I've observed, and because if you poke a dull object into the opening of the sensor it takes a fair amount or push to make it click or trip manually!
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ohmslaw
IF you are certain that your gauge is accurate you can run the unit with the lop wire off and see if it still trips. You may have a wire fault some where.
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etbrown4
7kw oil pressure

Does anyone know if Kelly has returned. ;)

I sure would like to find the link to the service bulletin on the wave washer, if that bulletin applies to the 7kw guardian. tkx
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Skip Douglas SkipD
etbrown4;10560 wrote:
Does anyone know if Kelly has returned. ;)

I sure would like to find the link to the service bulletin on the wave washer, if that bulletin applies to the 7kw guardian. tkx
Kelly is back from his vacation, though as a result of being away from the job he's swamped. Call the office and ask if he's in. You could also email him - get the address from the office staff.
Skip Douglas
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HKFever
etbrown4;10464 wrote:
Our unit trips every time it's run, and it trips at 25psi. :)

[B]Does anyone know the pressure setting of the low oil pressure switch? The FACTORY SPEC?[/B]

I find it hard to IMAGINE THAT it is supposed to trip at 5-8 because of the behavior of two I've observed, and because if you poke a dull object into the opening of the sensor it takes a fair amount or push to make it click or trip manually!


This is from a manual I downloaded from here earlier. #0G9266.pdf (Thanks "Canada Guy").

[url]http://www.zillerelectric.com/forums/showpost.php?p=10605&postcount=9[/url]

Page 141
Quote: "Note: The oil pressure switch is rated at 10 psi
for V-twin engines, and 8 psi for single cylinder
engines."
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Canada_Guy
HKFever;10622 wrote:
Thanks "Canada Guy


You're welcome eh! Glad I could help you find out more "aboot" your engine.
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etbrown4
service bulletin 7kw guardian- wave washer

I've been struggling for a while to try to come across the service bulletin, to see if it applies to my ser no.:)

I recal that Kelly was on vacation around the end of Aug, but so far all efforts to reach him have not succeeded.

I emailed him with the ser. no, but did not hear back, so possibly he is traveling again.

Is there anyone out there who has the links to the Generac Servce Bulletins which may apply?:)

Many thanks!
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ohmslaw
Is your unit covered ? no
Could your washer be bad ?Yes
Is your washer bad? Not likely if your readings are accurate.
You need to follow the suggestions in the post and complete a proper diagnostics to find your trouble. The 7KW units did not have a bulletin for the wave washer. The 8Kw units did.
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