Heater Blower Fan won't turn off, Usually people have the opposite problem Options

[coupelover]

For quite some time now my heater blower fan will not shut off. The heater lever can be in any position. I understand that the lever is supposed to complete a ground circuit when in the farthest back position - hitting a brass nub or something like that. The green/white wire is connected properly but I haven't taken the lever assembly out because I haven't figured out how - the cable tension prevents my attempts. Any ideas out there (to resolve problem and/or to remove the lever assembly)? is there some sort of insulation washer that may have detiorated?
Thanks in advance.

[Ansbacher]

I am not sure about your exact problem, but be very careful with that heater lever apparatus. That thing caused an electrical fire in my '74 a few years back. If it is not working properly or stuck on, disconnect it out of the system ASAP until you figure it out and repair it. I totally disabled my heater system, but luckily I live in Florida and rarely would ever need it. Good luck.

Ansbacher

[IronHillRestorations]

First two things I'd check is the wire to the heater lever to see if has a bad spot in the insulation and is grounding out, or maybe the the relay for the blower is stuck on.

I'm curious as to how the trigger wire for the heater fan could cause a fire, as it's a switched to ground trigger, not 12 volts

[bbrock]

Disconnect the heater cables from the flappers so you can pull the lever out. Agree with checking the wire for bare spots but also check to make sure the spacers prevent the lever from contacting the lever bracket. There should be fiber washers o both sides of the lever to prevent creating an electrical path to the bracket. The lever should only contact that brass nub. I just went through something similar even after a fresh refurb of the lever. Mine was turning on the fan early. The lever was touching the bracket just before riding up on the pad with the brass contact nub. I had to add an extra thin spacer to maintain an air gap through the full range of motion before the brass contact.

Also curious about the lever causing a fire. Only way I can think is if a hot wire somehow shorted to that ground circuit causing a dead short to ground when the lever was pulled. (IMG:style_emoticons/default/confused24.gif)

[coupelover]

Thanks everyone for the lever removal advice and the possible fixes. I have the info I need to address the problem. I have two other classic cars and I'm always amazed as to how strong the 914 network is in helping each other out. Other groups I belong to can't hold a candle to the 914 community.