How to turn your heater core off and on in the cab. - Printable Version +- Rawze.com: Rawze's ISX Technical Discussion and more (http://rawze.com/forums) +-- Forum: Big Truck Technical Discussion... (/forumdisplay.php?fid=1) +--- Forum: Things that may help others... (/forumdisplay.php?fid=46) +--- Thread: How to turn your heater core off and on in the cab. (/showthread.php?tid=4537) |
RE: How to turn your heater core off and on in the cab. - earnies2 - 06-23-2019 Well today is install day....I also got a new degas bottle because I can't see my antifreeze in the old one....I will let you know how I make out... RE: How to turn your heater core off and on in the cab. - earnies2 - 06-23-2019 (06-23-2019 )earnies2 Wrote: Well today is install day....I also got a new degas bottle because I can't see my antifreeze in the old one....I will let you know how I make out... Well things didn't go well I couldn't get the fitting off the tube that comes out of the back of the head....so I heated it up and the copper fitting broke off.....so I removed the tube and put it in a vice and heated the fitting again hop to get the broken piece out but the whole fitting that was grazed on the pipe came off...so off to cummins in the am for a new tube and seal for the head end....sometimes I'm a bull in a China shop..... RE: How to turn your heater core off and on in the cab. - Waterloo - 06-24-2019 Earnie! What the hell were you doing behind the head? All you had to do was go inline with the heater core inlet hose. You can extend it too if it is too short and mount the valve elsewhere using hose barbs and clamps. Bad Earnie! RE: How to turn your heater core off and on in the cab. - earnies2 - 06-24-2019 (06-24-2019 )Waterloo Wrote: Earnie! What the hell were you doing behind the head? All you had to do was go inline with the heater core inlet hose. You can extend it too if it is too short and mount the valve elsewhere using hose barbs and clamps. Bad Earnie!I wasn't behind the head. The heater hose tube comes out of the side of the head at the rear. I broke the 90 degree fitting at the end of the tube. Then I removed the tube to put it in a vice to remove the broken piece and after heating it the threaded part that was grazed on the tube came off I still never got the broken part out.... RE: How to turn your heater core off and on in the cab. - earnies2 - 06-24-2019 (06-24-2019 )earnies2 Wrote:(06-24-2019 )Waterloo Wrote: Earnie! What the hell were you doing behind the head? All you had to do was go inline with the heater core inlet hose. You can extend it too if it is too short and mount the valve elsewhere using hose barbs and clamps. Bad Earnie!I wasn't behind the head. The heater hose tube comes out of the side of the head at the rear. I broke the 90 degree fitting at the end of the tube. Then I removed the tube to put it in a vice to remove the broken piece and after heating it the threaded part that was grazed on the tube came off I still never got the broken part out.... All fixed I had the fitting tight welded back on the tube and finished the job now all I need to do is wire it up RE: How to turn your heater core off and on in the cab. - earnies2 - 06-24-2019 (06-24-2019 )earnies2 Wrote:(06-24-2019 )earnies2 Wrote:(06-24-2019 )Waterloo Wrote: Earnie! What the hell were you doing behind the head? All you had to do was go inline with the heater core inlet hose. You can extend it too if it is too short and mount the valve elsewhere using hose barbs and clamps. Bad Earnie!I wasn't behind the head. The heater hose tube comes out of the side of the head at the rear. I broke the 90 degree fitting at the end of the tube. Then I removed the tube to put it in a vice to remove the broken piece and after heating it the threaded part that was grazed on the tube came off I still never got the broken part out.... Here is what I had welded... RE: How to turn your heater core off and on in the cab. - Waterloo - 06-24-2019 Looks fantastic! Factory. RE: How to turn your heater core off and on in the cab. - Daytripper - 06-25-2019 (05-16-2019 )Waterloo Wrote:I have had the same problem....took my truck to the dealer to check wiring...ect. kept telling me thermistor reading was at 34°... Well that wasn't what was coming out of my vents! After replacing a broken actuator and verifying that the doors moved freely but air was still warm. I have used my clamp off pliars to shut off flow to heater core and what do you know....ice cold air! The hvac door must warp or crack. Will be installing these this weekend!(05-15-2019 )Lonestar10 Wrote: They do make electric valves for such occasions don't know name but it's similar to what you did only when factory installed as soon as you select AC it shuts then reopens if defrost or normal heat/vent is selected. My truck has a water spicket type valve but I can't use it due to apu so what you posted sounds simple enough to try. RE: How to turn your heater core off and on in the cab. - Rawze - 06-26-2019 (06-25-2019 )Daytripper Wrote: ... yes, the blend doors warp and get sticky when they get old. - I got tired of replacing blend door motors on mine, so I resorted to ripping out the motors, controllers and everything, then installing lawn-mower throttle cables to control the blend doors by hand from the drivers seat instead. Now, whenever one of them hangs up a bit, I can feel it and just jiggle the cable a bit and it will get unstuck. lol works just like the old cars from the 1970's now |