Pawel Posted June 3, 2011 Share Posted June 3, 2011 Hello!I have a question that is probably pretty obvious for anyone who closely inspected an US truck - but I haven't, so here it comes: Many US trucks have a group of three bullet-lights on the roof. Between them you often see two snorkel-like objects. What are those? Thanks in advance for your help, have a nice dayPaweł Quote Link to comment https://www.bigmacktrucks.com/topic/19292-question-roofbullet-lights-and/ Share on other sites More sharing options...
Doug Maney Posted June 3, 2011 Share Posted June 3, 2011 The part you are speaking of is an air diverter to direct air along the roof and past the roof vent. The diverter assures that air will be directed into the vent when the vent is opened forward or past the vent to draw air from the cab when opened rearward. Quote Interested in Old Trucks? Check out: www.antiquetruckclubofamerica.org Link to comment https://www.bigmacktrucks.com/topic/19292-question-roofbullet-lights-and/#findComment-78920 Share on other sites More sharing options...
Pawel Posted June 3, 2011 Author Share Posted June 3, 2011 Hello!Thanks a lot for your fast answer! So am I correct to assume they should be U-shaped, looking from the front, and see-through (open at the rear)? Thanks again, have a nice dayPaweł Quote Link to comment https://www.bigmacktrucks.com/topic/19292-question-roofbullet-lights-and/#findComment-78921 Share on other sites More sharing options...
mowerman Posted June 3, 2011 Share Posted June 3, 2011 Hello!Thanks a lot for your fast answer! So am I correct to assume they should be U-shaped, looking from the front, and see-through (open at the rear)? Thanks again, have a nice dayPawełno,,the open faces the front..bob Quote Link to comment https://www.bigmacktrucks.com/topic/19292-question-roofbullet-lights-and/#findComment-78925 Share on other sites More sharing options...
vision386 Posted June 3, 2011 Share Posted June 3, 2011 Pawel,here is a smaller picture that shows the orientation of the roof vent intakes on a basic R-model cab,as already stated the open end faces forward,this is for the roof-mounted fresh-air vent commonly found on older Mack models R,RW,RD,U ,etc..........hope this helps!..........Mark Quote Mack Truck literate. Computer illiterate. Link to comment https://www.bigmacktrucks.com/topic/19292-question-roofbullet-lights-and/#findComment-78945 Share on other sites More sharing options...
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