I'm working on a 6615 and can't figure out how to tilt the cab roof up to access the heater core and A/C evaporator. Or doesn't it tilt up like the 55 series? I have very little experience. Can someone help?
Appears to be several screws on top of the roof that need removed and then several on the underneath side on each side of the cab and then the outer roof should lift off. Assuming you don't have the Brazil model