K1200 Slant Radiator Clean - K-Bikes.com - Excellence in Motion
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post #1 of 2 (permalink) Old Jul 18th, 2019, 9:32 pm Thread Starter
Join Date: Sep 2005
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Posts: 5
K1200 Slant Radiator Clean

Had my GT heat up the other day and it started to stall out. Got off the freeway heat and parked for a few minutes and then it started up again fine and I went home. I checked the coolant level and and made sure the fans came on as expected. All Ok. I had cleaned the radiator when I had to resurrect the GT from a cam chain jump issue. Took the radiator off that time due to the extent of the work. This time I wanted to shorten the work and did some work.
I have a GT but this will work for a S/R/ or GT. S is a little less work due to the reduced tupperware and the R is easy. I took off the side panels, the belly pan. Loosened the radiator support strut between the block and the radiator to let the fan drop out. Took off the fan assembly. Have to remove the fan power plug on the right side of the engine to get the upper screw on the right side to remove the fan. The power plug is square so you have to twist it a little to get it out of the bracket. I had built a radiator cleaner jet that we used to use on the ranch that worked very well on the tractors. The tool is a a 1/4" copper tubing with a washer soldered on one end a hose connection on the other. The K bike radiator is alot more fragile so you have to be careful and not jam the radiator fins. I just hooked the tool up to my house hose and it provides enough pressure with the tool to do a pretty good job to clean the radiator. I also cleaned out my oil cooler radiator as well at the same time. Picts below showing room to clean the radiator. I did it from the left side mainly as the right side is more cluttered.
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post #2 of 2 (permalink) Old Jul 19th, 2019, 6:15 pm
jpel's Avatar
Join Date: Jun 2003
Location: Baltimore, MD, USA
Posts: 286
Nicely done! I had a similar experience 3 years ago and ended up replacing the radiator as it refused to clean out. Very expensive little rascal.

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