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Old 10-12-2011, 01:16 PM   #1
jjb4100's Avatar
Join Date: Sep 2011
Posts: 35
Smile Rocker Switch

We have a 2000 Damon Ultrasport. There is a rocker switch to the left of the drivers seat. Below the window, next to the air brake. The switch has RTDR on it. Does anyone know what the switch is for? What does RTDR stand for?

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Old 10-12-2011, 01:18 PM   #2
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Monaco Owners Club
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Location: Granbury, Texas
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retarder aka exhaust or engine brake
See this thread: RTDR switch?

Ronnie (WD5GIC) & Jan (WD5IHU)
2003 Monaco Dynasty Countess 42' w/tag, 2012 Ford Flex

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Old 10-14-2011, 12:04 AM   #3
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Read the OWNERS manual. If you don't have one then check online.
Retired Navy Submariner
2014 Itasca Sunstar 35F; 5 Star tuned; 2014 Jeep Cherokee TrailHawk
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Old 10-14-2011, 11:09 AM   #4
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Location: Oakton, Va
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From first hand experience, see signature, it is the exhaust brake. You turn the switch on and when you take your foot off of the accelerator the exhaust brake comes on. Even if you have a manual you might not learn what some switches do. I found my manual to be generic with some things missing. Do you have air bags or springs? If the latter you have a Freightliner XCS chassis like mine. I have had mine for 11 years since new and it is a great chassis. Let me know if you have other questions.
Jim Walker
N Virginia
2014 Palazzo 33.2
Cummins 6.7 ISB, Allison 2100 6 Speed
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