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Old 09-27-2009
Gregg Kizer's Avatar
Gregg Kizer Gregg Kizer is offline
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Join Date: Jan 2008
Location: New Castle
Posts: 171


Do you recall the time range (years of coach Mfrg.) of the "Official Detroit Diesel Bulletin" on the up grade on the supply line for the 300amp alternator?
Gregg Kizer KB9BG
'96 WBSD 42'(Mid Door) Body Number F116276
SMI Air Force One/2001 Jeep Grand Cherokee Limited or Tow Dolly/Chevy VOLT (electric)
Pan & Tilt rear Camera System/12 cams/Security System
New Castle, Indiana (summer)
Bradenton, Florida (winter)
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Old 09-27-2009
parris001 parris001 is offline
Join Date: Aug 2009
Location: Franklin
Posts: 57

That update might be 10 years old now. Mind you, it wasn't any kind of campaign or warranty bulletin. I don't think Detroit Diesel picked up the tab for any of these updates. It was only an FYI type deal. Detroit quit worrying about "minor" oil leaks some time back with the Series 60 to the point that they released to the dealers a list of what is considered a "leak" and what is considered a "seep".

Basically, it isn't officially an oil leak until it's hitting the ground and leaving a spot. I'm hesitant to tell you to come by the Prevost Nashville Branch for repairs because......... well........ all I can say is if you know Paul Lazar give him a call and chat with him about his visit. If after that you still haven't been scared off then come see us.
Jeff Parris
Certified Outlaw from Corporate Life
Nitetrain Coach Company
Generator Designer
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Old 09-29-2009
rrueckwald rrueckwald is offline
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Join Date: Jan 2009
Location: St. Joseph
Posts: 3,233

The interference discovered between the fan motor hydraulic hose and the baffle just under it has been repaired. Pete Chin was right, not a hard job. The baffle came out with four bolts, 2 easily accessible, one not that easy, and the last one a challenge. A larger cutout was made in the baffle to clear the hose, and replaced. Pictures attached.

Now for the damage. The baffle had a protective edge on it that was completely worn through. The hose was "protected" with a piece of spit loom (believe it or not). Didn't do the job. The hose was worn through the outer layer of rubber with metal-to-metal contact starting to wear the steel mesh in the hose. It looked not to be worn much, so I'm trying a repair. I laid in some epoxy to fill the groove, wrapped the hose with a piece of rubber, and used two hose clamps to support it. I'll have to watch that forever. It's a long expensive hose and I think the damage to it was probably superficial, so here's hoping.

Look at your own coach to assure you do not have this interference. Split loom was never intended to stand up to this kind of force and vibration.

Question: When should all the hydraulic hoses be replaced? I am sure they are all 15 years old. Looks like a pricey job. They appear to be in good condition, and only 67k miles on the coach, but the age is the issue.
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Ron & Dorinda Rueckwald
St. Joseph, MI
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