Breakdown Information
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Forum Discussion
This is a terrific subject, especially for us new to the RV world. Unfortunately I am able to contribute two breakdowns but hope others may learn from them as I have. Best advice I have found is to keep a cool head and everything in perspective when these unexpected situations visit you. Also helps to have all warrantee, engine, transmission and chassis manufactures emergency and roadside service numbers at easy reach IN the coach. Of coarse a good cell phone and service doesn’t hurt either!
First One:
RV particulars: 2003 NRV Tradewinds LTC
Driveline (Engine, Transmission): Cummins 350 turbo ISC, Allison 6000
Miles: 650
Year: 2003
Break Down Description: Loss of power @ 7,500 ft. elevation….. First trip (shakedown)
Symptoms: Heard a loud bang (like something fell on the floor) just after starting first thing in the morning. Idle RPM ok! No engine warning indicator lights on, humm?
Effect: After putting in gear and driving away slowly (residential area) it felt like the engine was a little weak. Upon pulling onto major street and asking for power only got about 20%. Engine could barely muster 800 RPM while in Drive but 2000 if in Neutral? Drove about a mile then limped back to house to call Cummins.
Cause: The air intake hose between the cold air box and the turbo had come apart because the clamp was not tightened properly. Loss of turbo pressure! That’s what we thought it might be but no boost gage to verify. Unfortunately the separation was where you couldn’t easily see it.
NO boost pressure to turbo ---- NO power! Especially at that elevation in the mountains!
Outcome: Cummins was very responsive and arranged to flat bed tow the coach to nearest service center (50 miles). There they made a quick diagnosis and fix. Guilty party was Freightliner, who had installed the air hose and cold box to engine and they didn’t hesitate to pick up the tab for the whole mishap.
Jack
First One:
RV particulars: 2003 NRV Tradewinds LTC
Driveline (Engine, Transmission): Cummins 350 turbo ISC, Allison 6000
Miles: 650
Year: 2003
Break Down Description: Loss of power @ 7,500 ft. elevation….. First trip (shakedown)
Symptoms: Heard a loud bang (like something fell on the floor) just after starting first thing in the morning. Idle RPM ok! No engine warning indicator lights on, humm?
Effect: After putting in gear and driving away slowly (residential area) it felt like the engine was a little weak. Upon pulling onto major street and asking for power only got about 20%. Engine could barely muster 800 RPM while in Drive but 2000 if in Neutral? Drove about a mile then limped back to house to call Cummins.
Cause: The air intake hose between the cold air box and the turbo had come apart because the clamp was not tightened properly. Loss of turbo pressure! That’s what we thought it might be but no boost gage to verify. Unfortunately the separation was where you couldn’t easily see it.
NO boost pressure to turbo ---- NO power! Especially at that elevation in the mountains!
Outcome: Cummins was very responsive and arranged to flat bed tow the coach to nearest service center (50 miles). There they made a quick diagnosis and fix. Guilty party was Freightliner, who had installed the air hose and cold box to engine and they didn’t hesitate to pick up the tab for the whole mishap.
Jack
