after many years, we have found this trouble shooting method on 7000 - 8000 with over heating problems. 1st there are different radiators OEM'd at factory - same od , different in number of core thickness front to back. MAke sure you got correct radiator.
a 7010 will fit a 7080 but will not cool it.
#2 fill and run until thremostats opens or in your case yours is out - let idle - remove cap - then quickly rev up to full rpm - fluid should drop 3" or so then slowly come back - no over flow or bubbles. This tells you your core is clean and water is circulating and water pump and head gasket is ok. #3 remove the shorud and pressure wash the radiator after loosening and pivoting the front coolers away from the radiator. 99% of the time the outside behind the shorud is plugged. It may take an hour to clean it. Just becasue one can see through most of it - if the fins are layered with dirt - it will not cool. IF one does not remove the coolers crud will be blown into the coolers and when dry suck back right in the radiator. - Again remove the shourd and set it back.
7000 and 8000 series we engineered to eliminate the problems of the 210 220 of having a marginal cooling system to the tune of best I can remember 50%.
Under 70% load you should read just over 180 degrees F 100 % load 200 degrees.
After years of service probably will go 190 and 210 degrees -
Topic Options
Post Options
Thanks(0)
