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M380 (Unique Issues) If you have a unique issue with your M380 model coach and it can't be answered in one of the other forums here, then this is where you can list it.....list your M380 Parts here too.

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  #11  
Old 07-29-2019
chiplamb chiplamb is offline
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Correct, the tensioner seems fine. This is the larger diameter idler dead center on the engine that distributes the serpentine belt to the AC.
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Chip Lamb
Augusta, Georgia
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2004 M380 98k/22xx hours
Former: 90 SP36, 92 WB40, 85 FC35SB & others
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  #12  
Old 07-29-2019
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Dc2x4drvr Dc2x4drvr is offline
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That is identified as Fan Pulley in the manual. Let us know what you find..
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Lance & Linda Hall
2004 M380
Body #234
"Smooth Ride"
Full Timing with 2 cats
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  #13  
Old 07-29-2019
chiplamb chiplamb is offline
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I will put it in the shop on Weds, we'll get the belts off and examine further.
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Chip Lamb
Augusta, Georgia
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chip@collectorsco.com / 804-357-4926
2004 M380 98k/22xx hours
Former: 90 SP36, 92 WB40, 85 FC35SB & others
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  #14  
Old 07-29-2019
DW SD DW SD is offline
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5 minute job to re-tension the AC belt. I did mine earlier this year. Use a large lever (long, large screwdriver or pry bar) and pairs of 9/16" / 14mm combo wrenches (I think).
Don't let that belt get loose to the point it slips. That will eat the belt quickly.
lever against the heavy steel brackets not the compressor case.
You may know.. but a good method for isolating a noise is a long screwdriver. Put your ear to the plastic handle and the metal tip on the part. Sort of like a poor-man's stethoscope.

Doug
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Doug W.
Encinitas CA
2004 M380
Ex-PT36
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  #15  
Old 07-29-2019
chiplamb chiplamb is offline
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Oh yeah. No problem. Just like to have second and third opinions on my diagnosis from the bus barn.

I was in there this morning working on an SOB that had them stumped or just gun-shy of, at least I can pay it forward. Somewhat clueless owner brought it in last winter (where it has been sitting and tying up space since) saying that someone had rewired something or other in the shoreline wiring and that it was arcing and smoking et.c. I analysed this some time back and told them that if all house batts were dead that it would effect all sorts of things - and they were - so finally last week or so the owner approved changing these, Kelli got them installed Friday or early this morning. I then checked her connections over, ran down the list, got the LP flowing and the generator running (!!!), had cold AC, working fridge et.c., a good sign. Next we located the poor excuse for a transfer switch, in this case just a delay relay for the genset in a box with very thin Romex running in and out of it for this purpose, saw no modifications there or at the shoreline where it was wired up, then plugged in the shoreline and whammo, no faults detected. If nothing else it makes one appreciate a BB or other well converted coach over an "RV"!
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Chip Lamb
Augusta, Georgia
E-MAIL OR CALL - NO PM
chip@collectorsco.com / 804-357-4926
2004 M380 98k/22xx hours
Former: 90 SP36, 92 WB40, 85 FC35SB & others
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  #16  
Old 09-13-2019
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Dc2x4drvr Dc2x4drvr is offline
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Hey Chip, did you find the problem?
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Lance & Linda Hall
2004 M380
Body #234
"Smooth Ride"
Full Timing with 2 cats
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  #17  
Old 09-13-2019
chiplamb chiplamb is offline
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I think just a Slappy belt! Funny sound
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Chip Lamb
Augusta, Georgia
E-MAIL OR CALL - NO PM
chip@collectorsco.com / 804-357-4926
2004 M380 98k/22xx hours
Former: 90 SP36, 92 WB40, 85 FC35SB & others
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