charging problems with 99 winne

CharlesinGA · Dec 8, 2021

CharlesinGA · Dec 8, 2021

Kirk said:
I was not aware of the schematics that Winnebago has, which are far superior to what most manufacturers provide. Do you mind sharing how to find those?

Actually this entire thread belongs in the Winnebago Topics forum on this board. John Canfield has the information there as a sticky, but I'll repeat it here in a different manner that might be easier for people to find without the links at hand.

Go to winnebago.com
Then in the very top menu bar on the right, click OWNERS
A drop down box appears, click the first item which is OWNER RESOURCES
Another drop down box will appear titled HELPFUL LINKS
From this menu you have many items but you are mostly interested in..........

Guides and Diagrams has several red buttons down the page,
Paint Guides
Sealant Guides
Plumbing Diagrams
Wiring Diagrams

In wiring you will get a list of years and you drill down thru them to get to what you need. Below the list of years you will see three lists and guides which will also be helpful in understanding the drawings. For later models the parts lookup requires a 3D viewer to be installed on your computer.

Some models have individual wiring diagram subjects as I linked to above, but then will have a link at the bottom which is the entire collection of all of the drawings. Some models such as the '99 Adventure 33V above, do not have this single link, which saves a bunch of time.

Here is a catalog of standard Winnebago parts, which is also helpful. 2008 edition, seems to be the "current" one on the WBO website.
2008 Winnebago Parts and Accessories catalog

Charles

CharlesinGA · Dec 9, 2021

The fact the 40 amp breaker is not tripped is not an indication it is OK. I would at least check the voltage on both terminals of the breaker with the batteries turned on. All of the power from the batteries to your 12v breakers inside (above the fridge I think) come thru this breaker and all the power from the converter to the batteries passes thru here. The breaker could have easily failed internally. You could easily have a loose screw on a terminal somewhere, they need to be checked every couple of years, as an RV shakes everything loose.

If you find it bad, I would consider replacing it with something better. These breakers are used in General Aviation aircraft such as Cessnas due to their small size and light weight, and nothing to do with how long they last. In lower amperages they are fine but I recall having lots of trouble with the 60 amp version used for the alternator output in Cessna 150's and 172's and the like. So much trouble that Cessna finally came out with a kit to install a much larger breaker. They are fine for low amperage's but this high is too much.

You would have to mount the breaker differently and install larger terminal ends on the wires. I am not keen on upsizing to 50 amp, but this is 8 gauge wire, and fully capable of that, especially since it won't have that much passing thru it very often.

Eaton Bussmann 285 Series Resettable Circuit Breakers Surface Mount up to 150A

eaton-bussmann-cb285-50-surface-mount-circuit-breaker-50-amps__5599_580.jpg

As an alternative Tyco manufactures a line of breakers used in aircraft that are a pull to open type and also trip on overload, similar in size and shape to what you have, and pretty decent quality. Next to the bottom one in the list. Other, better brands such as Klixon, used in airliners and larger aircraft are expensive and I could not find one in 40 amp oddly.

Tyco W23X1A1G40

Charles

charging problems with 99 winne

CharlesinGA

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CharlesinGA

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CharlesinGA

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