alanstri Report post Posted November 27, 2012 I am new to diesel pushers (and class A coaches in general) but have jumped in with both feet!! I have just purchased a 2008 Gulfstream Tourmaster 40B coach with the Cummins ISL 425 HP engine on a Freightliner chassis . The coach has been very lightly used with only 16k miles and 40 generator hours. When first started, and for 5-15 minutes afterwards, the radiator fan cycles every 5 seconds or so between gale-force wind with lots of noise and almost no air or noise. After everything is completely warmed up it seems to behave. The engine temp seems normal - around 190°. Other noises that remind me of a bad bearing (squalling/grinding) are barely audible as the fan cycles, but with no experience with big diesels these may just be normal. I could probably make a recording of the sounds and post it if it would help. Can anybody put my concerns to bed, or do I need to find a Cummins shop before the fan screws itself through my $$$ radiator? We're looking forward to meeting all of the great folks as we begin to venture out from our corner of the country. 10 years from now we may be 8 year full-timers! Share this post Link to post Share on other sites
desertdeals69 Report post Posted November 27, 2012 I would have Freightliner take a look at it. If it has a bad bearing its better to fix it now rather than have it totally fail. Share this post Link to post Share on other sites
wolfe10 Report post Posted November 27, 2012 I agree. Take it to a dealer for the chassis you have-- Freightliner or Spartan. Share this post Link to post Share on other sites
