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About cliffmattson

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    Waukesha, Wisconsin
  1. Coolant Flushing For Cummins ISC 8.3 That Requires SCA Coolant

    Thanks for your help!
  2. I have a 1999 American Dream with a Cummins ISC8.3 diesel engine. It requires SCA type coolant. I've seen postings that indicate there are ELC (extended life) coolants that don't need to be tested as often as the standard types. Is a thorough flushing of the cooling system required to change from one to the other? And in general, what is the procedure to do a coolant change/system flush on an engine like this?
  3. Entry Door Hard To Close

    I own a 1999 American Dream that has the same thing happen when leveling. This has been an issue since we bought our coach new in 1999. I believe what is happening is that the entire structure twists when leveling. I keep a wrench under the entry steps to adjust the door striker each time we level. This helps a lot, but the underlying problem is that the motor home indeed flexes. I use a carpenter's level when deploying the jacks and find it is much more accurate than the built-in lights in the jack system. Also, I can also tell that the slideout tends to bind some when the coach is on the jacks so I extend the slideout before leveling while the air bags are still inflated; another sign that the coach body is twisting. I don't know of any solution to the problem other than to live with it and adjust the entry door striker.
  4. Treating and Preventing Rust

    I have a 1999 American Dream coach that has been driven in snow and salt and I am working on getting rid of the undercarriage rot as I post this reply. Fortunately there is enough structural integrity that I can cut out the bottom of the rotted tubes that run the length of the outside edges of the coach. Then I am brushing with Rustoleum brown primer. I purchased coils of aluminum that are normally used for roof flashing. It is 6" wide and comes in 10 ft. rolls. I am attaching this material with self tapping screws to cover the opening created where the rusted tube was. Then I am using Great Stuff expanding polyurethane foam to fill the cavities. After the foam sets I've been trimming any material that seeps out of small openings and then spray the whole thing with rubberized undercoating. This is nasty, dirty work, but I'm pretty sure it will stop any further deterioration and seal the areas that were rusting away. If anyone has got other ideas I'd sure like to hear them. Thanks!
  5. Onan 7500 Diesel Genset Stops When the Coach Moves

    Thanks for your reply! I have owned the coach since new and this is a new phenomenon. I'll check the coolant level. Didn't think of that one. There are no blink codes, and to my knowledge nothing else has changed. The coach has about 78,000 miles on it.
  6. I have a 1999 American Dream with an Onan 7.5 KW diesel generator that runs fine when the coach is stationary. As soon as the coach moves the generator will stop running. There are no blink codes and no external fuel leaks or any evidence of loose fuel lines that may cause air to enter the system. Also if the coach sits for a few weeks I have to prime the system (hold the start button in the stop position to run the fuel pump)before it will start. Not sure if there is any connection between the two, but I thought I should mention it. I checked the engine oil level to be sure it was not low enough to cause a loss of oil pressure when in motion. Any ideas? Thanks!