02-08-2016, 10:24 AM
The heater tank should be full to the filler neck. Radiator cap is 13 lb at all auto part stores. The overflow system, filler neck, radiator cap, overflow hose barb and overflow hose with 2 clamps should be air tight -- NO leaks.
The level in the overflow tank should go up as the heater heats up and down as the heater tank cools.
The level in the overflow tank should go up as the heater heats up and down as the heater tank cools.
Rudy Legett
2003 Foretravel U320 4010
ISM11 450 hp Allison 4000R
Factory Authorized Aqua Hot Repair Center
Southeast Texas Area