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Old 08-25-2012, 11:07 PM   #15
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Ha......laughing, but with sympathetic kinship. Rook
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Old 08-26-2012, 12:18 AM   #16
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Well Gang,
We've all got the stories. I'm in the middle of one now. Long story short, we were on a trip recently in N. CA in the Bishop area and stopped for the night. We'd planned on moving on in the morning so, we decided to stop at the K-mart in the north end of town. Well, it was about 90 degrees outside and we wanted to cool the coach down so, on came the genny. It's a 7.5 Quiet Diesel. On came the basement air. All was well for about 5-10 minutes. Then, the genny stopped. And, so did the A/C.

Well, longer story short. It spit out a code on the genny switch. The code was/is "33" which, in the book is "over heat" condition.

Advance three weeks. We're back home and I try the genny. It does the same thing, even at home when conditions are cooler. It still shows code 33. So, some research on the net, and in the service manual and, it could be several things.

OK, now to the present. If you look at the pics below, you'll see that I started with the easiest possible fix for the problem. And that was the temp sensor. Should be an easy fix, yeah sure. That little brass guy is IN THERE! I used all the tools I had in the limited amount of space I had, to get it out.

In the end, a twenty minute job, has turned into days work. I had to dismantle 60% of that diesel generator to get the best possible access to that little sensor. When I finally got the space to work, I used two forces of nature working against each other to get it out. I used heat from propane torch to heat the thermostat housing while used some "freeze" in a can to freeze the mangled remains of the sensor.

I put the vice grips on the little brass stub of a sensor and it broke free. So, that's the story of my life. If I can find the hard way to do something, I will. A new sensor is now installed. But, I'm awaiting a new rotor for the generator part. Because while in there inspecting things, I found large pieces of "magnet" stuck to various metal surfaces all around, inside the generator housing. It turns out, one of the rotor feet, disintegrated and shattered all over the place in there like shrapnel from a grenade.

So, I now had to disassemble even more of the gen. So, a 20 minute job, has now turned into SEVERAL days. Oh well, that's life. RV life that is. I guess you could say this belongs to the 18" rule.
Scott




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Old 08-26-2012, 02:58 PM   #17
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Duck tape if it shouldn't move and WD-40 if it should.
I like that, Dunner...I really do..!
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Old 08-26-2012, 03:04 PM   #18
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Wow Scott...that was interesting. Do you think that the magnetic pieces caused the problem with the heat sensor?
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Old 08-26-2012, 03:29 PM   #19
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I like that, Dunner...I really do..!
It's one of those:

"As Seen on irv2" and other forums, type things.
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Old 08-26-2012, 03:49 PM   #20
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Wow Scott...that was interesting. Do you think that the magnetic pieces caused the problem with the heat sensor?
stvcharfe,
Well Sir, I don't see how they could be but, I'm certainly no expert at much of this. I'm you're basic DIY type guy and can only surmise how and why certain things happen. I have three issues with this gen.

1. A code "33 for an over heat condition
2. A cold start/no glow plug warming/early cranking issue
3. A disintegrated magnet on the rotor.

I'm not too sure the "over heat" condition and the cold start condition are related but, it's possible. Especially if the temp sensor is set up to control both situations. If the sensor sends a signal to the engine controller telling it that the engine is real cold prior to starting, the engine controller is to tell the glow plugs to heat up and NOT crank until a certain temp or, time frame of heating the glow plugs is reached. Then, and only then, the engine is allowed to crank and start.

But, mine is cranking right off the bat, no matter how cold it is outside. Now, I have/had this Code 33 which, is a supposed over heat condition that could be caused by a multitude of situations. 99.9% of them I've already eliminated. The replacement of the sensor and the subsequent cleaning of the radiator may remedy it. Although, what's kind of a bummer is, I'm doing both at the same time so, if the situation is remedied, I won't know if it was a bad sensor or, a clogged radiator other than a report from the radiator tech who will perform the work. We'll see.
Scott
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Old 08-26-2012, 10:58 PM   #21
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Thanks for replying Scott. I too, am your basic DIY type guy, although I've learned not to tackle anything that's too tough. I don't always have the sense to know what's too tough but your project is a very interesting one to me because it's the type of project that looks like I would tackle it and then get in so deep that I'd wish I'd never attempted it. It's also interesting because we both have very similar coaches. Mine's a 2006 Meridian 36G. Keep us posted on how it all turns out.
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Old 08-27-2012, 12:46 AM   #22
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Roger that Sir, will do.
Scott
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