Discussion Starter · #1 ·
I am trying to get heat on the left side of my 2000 Gary Fisher and am puzzled by the inner workings of the heater box (error code 1-8). I removed the stepper motor and snorkel and have tried to manually move the blend door flap by reaching around inside to the inner part of the shaft. I can't really get it to move and am not sure of which direction to turn it anyway. Has anyone here taken apart a heater box to see how the innards work? As you can see on the attached picture, the yellow inner shaft appears to be inside of a larger wheel. I tried turning the larger wheel and it appears to change the direction of the airflow (floor vent to upper vent/defrost). Is this correct? Is there any way to manually move the blend door (which I now assume is inside of the heater box assembly)? I have ordered a blend door shaft repair kit from eeuro but am doubtful that will fix the problem. I have also scanned the web to try to find a diagram of the inside of the heater box but have not found a good one yet.
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