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Old 12-15-2010, 05:21 PM   #1
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Auxillary Heater Motor Dead on Itaska 35U

I have determined that the auxillary heater motor is frozen up and will not run even when connected directly to 12V. My first choice would be to replace it and without dragging out the tin snips I don't see a way to remove it. Also would it be practical to mount a 10 inch radiator cooling fan in front of the coils and let it blow through the coils then through the dead fan and up into the coach? This 2000 Itaska 35U doesn't have much room to work and any advice would be appreciated. John
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Old 12-15-2010, 06:50 PM   #2
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try discountvantruck.com ac, heater section
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Old 12-15-2010, 07:06 PM   #3
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We have a 35U. The fan was making a very loud noise. It seemed that something was stuck in the fan blades. This was about 4 months back and I knew that we would want to use it in the winter. In our coach the front passenger basement compartment has the hot water tank to the right. Behind that there is a metal duct that can be removed with 4 screws. (It is a bit dificult to get to the back two screws) It contains a squarel cage motor and fan. You then can unplug the electrical conection which will alow you to remove the complete unit from the coach. I would test the conection with a test light to confirm that you have power to the fan motor. You may need to replace the motor then reinstall. My fan blade had shifted to one side causing it to scrub the cover. Be sure to check the fues if you dont have power to the plug. Also before you remove the motor, spin the fan to see if it moves freely.
hope this has been helpful to you
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Old 12-17-2010, 03:42 PM   #4
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Thanks JBMSR, mine is in the same location, what a bear! The screws that hold the fan housing come from inside the air plenum and can't reach them from the heater vent. There must be one hidden one on the entire unit where it mounts to the base. There is only about an inch clearence in the front and wasn't sure if there was another screw hidden up there. I really didn't want to pull the hot water heater to see better. Still at a stand still but will try harder, thanks again.

john
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Old 12-18-2010, 08:43 AM   #5
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Hey John
I felt the same way about not wanting to remove the hot water heater. I am attaching a picture of my fan assembly. First remove the eight hex headed screws that are closest to you as you are in the compartment. Then remove three Phillips screws securing the duct box to the bottom. (one of them is to the front passenger side of the coach). At this point you can remove the cover that the hex head screw were holding. Also you can then move the heater evaporator coil to the right, out of your way. The heater hoses attached are very flexible and do not need to be removed. At his point you can unplug the electrical power source plug and remove the 4 screws that hold the fan/motor assembly.

John if I can help more let me know.



Jesse



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Originally Posted by johninmccall View Post
I have determined that the auxillary heater motor is frozen up and will not run even when connected directly to 12V. My first choice would be to replace it and without dragging out the tin snips I don't see a way to remove it. Also would it be practical to mount a 10 inch radiator cooling fan in front of the coils and let it blow through the coils then through the dead fan and up into the coach? This 2000 Itaska 35U doesn't have much room to work and any advice would be appreciated. John
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Old 12-18-2010, 02:26 PM   #6
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Jesse, thanks for the picture, Yup same as mine. I will get back into it tomorrow and see what happens. I may have just needed some motivation from someone who has done this before. Thanks again,john
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