Question about 1986 Audi 5000 CS
How to remove and replace HVAC blower motor 86 audi 5000
I've had this done and did it myself more than once. The correct way, takes all day and is not easy. My bud Larry showed me a quick way, it isn't pretty but gets the job done in about an hour. Take off the pas. wiper arm. remove the plastic cover over your climate control unit. Drivers side you need to use a snap ring pliers (90 degree works best) unplug blower, pull off washer, push the blower in with your thumb. On the other side you'll see 3 screws in a white plastic reducer up against the ccu. take them out. With an instrument of destruction Saws all, hack saw blade, hot knife, cut the black ring all the way across (end to end) curl it inside the white thing you took the screws out of. pull it up and out. This part varies, pull the blower out of the space you just made. some times it'll squese out, sometimes you need to get the IOD cut area out of ccu so blower motor will make it out unharmed. Now replace blowers brushes or put new one back in, put plastic all back the way it was adding duct tape or better to seal. Try not to use smelly stuff that never dries.. ;)
Posted on Mar 15, 2009
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Fig. Typical HVAC operation schematic
An inoperative blower motor could be caused by the following:
* Blown fuse(s). The fuse should be replaced. There may be both a LOW BLOWER and HIGH BLOWER fuse. Some models may also call it the HVAC fuse. Even the RADIO fuse is used in some applications. Check them all. If a fuse is blown there may be a short to ground in one of the power supply circuits.
* Open Circuit. Check the circuit between the ignition switch and the blower motor, and the blower motor ground circuit. Repair as necessary. * Faulty blower switch. A faulty blower switch should be replaced. * Most heater blower circuits also include a blower motor relay (look in the underdash convenience center), as well as a blow motor resistor. These items should be checked especially if the blower runs in one or two speeds, but not all speeds selected.
REMOVAL & INSTALLATION
Fig. Blower motor and fan assembly removal
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Fig. View of the resistor block screws (1), blower motor resistor (2), resistor block wire connector (3), blower motor screw (4), blower motor (5), blower motor wire connector (6), blower motor screw (7), HVAC housing (8), wire harness retainer (9), blower motor screw (10)
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