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Old 12-03-2015, 07:16 AM   #127
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Is there a fan control on the AC control panel or just on/off and temperature knob?
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Old 12-03-2015, 07:34 AM   #128
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There is a fan control on the AC panel. so, I have fan control on the center panel and fan control on the drivers dash. I'm assuming for both, independent systems. Bizarre set-up Airstream..
AC fan on center console works fine. (not charged, but blows). Its just the defrost/heater fan that isn't functioning.

Pics tonight so I'm not posting up inaccurate info by accident.
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Old 12-03-2015, 07:41 AM   #129
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Ben, can you positively verify that there are multiple fan systems? Two inside the heater/evaporator box makes sense as every one that I've seen has that arrangement. I'm struggling to figure out where you might have a 3rd or 4th fan installed.

I'm also wondering if the fan control on the heater control assembly might be disabled and only the one on the AC panel is used.

You've got some investigative work ahead of you
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Old 12-03-2015, 08:25 AM   #130
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Quote:
Originally Posted by bkahler View Post

You've got some investigative work ahead of you
Yes, I do. I'm sure the system is simple. Its just the owner who's confusing!
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Old 12-03-2015, 09:10 AM   #131
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On my '82, the heater fan is located as I mentioned and the AC fan is below the center of the dash. AC controls are in the center of the dash and seperate heater controls in front of the driver. Sounds similar to Bens but who knows. Seems like there were a lot of changes made in the 310s from 82 to 84. The heater blows only to the lower floor vents and the defrost. The AC blower comes threw the vents on the dash. Very very odd.
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Old 12-03-2015, 09:16 AM   #132
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Edit: the heater also blows through a vent in the kick panel in front of the passenger seat. THAT vent control is another push pull cable under the dash to the right in front of the passenger seat.
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Old 12-03-2015, 09:28 AM   #133
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Wow! That's definitely a hybrid system. I think I like the arrangement in my Argosy better!

You can pretty much ignore my write up as it sounds like Mike's setup is going to match what you have.

Brad
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Old 12-03-2015, 09:32 AM   #134
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Hehehehehe, I KNOW Brad....crazy.
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Old 12-03-2015, 09:37 AM   #135
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Quote:
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On my '82, the heater fan is located as I mentioned and the AC fan is below the center of the dash. AC controls are in the center of the dash and seperate heater controls in front of the driver. Sounds similar to Bens but who knows. Seems like there were a lot of changes made in the 310s from 82 to 84. The heater blows only to the lower floor vents and the defrost. The AC blower comes threw the vents on the dash. Very very odd.

Yes, sounds exact to mine. I'd LOVE to have a nice sit-down chat with some of these AS designers back in the day. ???
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Old 12-03-2015, 09:43 AM   #136
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Its my understanding that the AC system used was provided by ACME AC. (Not joking about the name). They are still in business I think but I dont know that for a fact.
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Old 12-03-2015, 09:46 AM   #137
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Motorhome Dash AC and Heat systems
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Old 12-04-2015, 06:25 AM   #138
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Last night was the steering wheel. Puller worked great, but this is going to be a chore. Tons of parts in these things to get down to the tilt portion and shifting rods. I'll be at it this weekend. I didn't get out to work until after dark, so no looking for her blower motor.

Also, the fan does shut off. Obviously. Click image for larger version

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Old 12-04-2015, 04:05 PM   #139
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Quote:
Originally Posted by mayco View Post
I bought replacement vacuum servos from this guy for my evaporator box.. He definitely has a bunch of parts.

Brad
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Old 12-04-2015, 05:06 PM   #140
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Hey Ben, you probably have already figured all this out, but from the pics of your dash and your explanation of the HVAC systems you have, it is exactly as Mike (mayco) has explained. Your dash is practically identical to mine which is also an '82 like Mike's. Looks like AS used the same system in your Argosy as they did in the later Airstream's.

The heater/defroster system is separate and independent from the A/C system. Both are very simple systems and I feel they work well.

I never noticed until I looked at a pic of my heater controls today that my fan switch is the same as yours which shows low, med, high. However, I can tell you with 100% certainty that the bottom position is OFF and there is only a low and high fan speed setting. The heater/defroster fan is off when the switch is on the bottom position.

The heater/defroster fan is located on the front side of the firewall and is accessed through the front "hood". The fan switch is powered via a fuse on the fuse block, so check the fuse first. Check to see that the wires on the switch are connected and are good. The fan on high can draw a lot of amps. I had to replace one of the connectors on a wire at the switch...it was burnt. There are three wires on the switch. The switch wires then go over to the box that the heater core is located in. The wires connect to a large resistor at the heater core. This resistor is what provides the two speeds of the fan motor. The reason the resistor is located on the heater core box is to keep it cool when the fan is running. Check this resistor to see that it is in working order. It can be removed. Look to see if the exposed coiled wires are not broken. Be very careful when handling the resistor if you have had the switch on...it can be very hot!

Next, check to see if there is power at the connector at the fan. If you have power at the connector but the fan is not working, the issue is probably the fan motor itself...this is the problem that I had a few years back. I checked with an AS dealer for a replacement fan and I just about fell over at the price they wanted...no way in h*** would I ever pay that price! I looked around for a replacement fan motor of which there are a million different ones out there but impossible to find the right one since there is no part number on the original.

Then I happened to ask an "old timer" about the fan motor and he lead me right to the solution. Rarely does a fan motor actually go back or burn out. Usually it stops working do to none use and the shaft rusting up some. He told me what to do and it worked! The fan motor is still working to this day. Pull the fan motor off the firewall. Remove the quarrel cage. Drill a small hole through the small cap on the outside of the motor. Spray a lot of WD40 into the hole and on the shaft on the other end. Take a hammer and moderately hit the end of the shaft. Spin the shaft by hand. Repeat the process a few times of spraying with WD40 and loosening the shaft with a hammer.

That's about all there is to the heater/defroster system. The heater/defroster duct work is a large metal plenum. There is a gate in the plenum that directs heat to the heater ducts or the the defroster ducts. The four defroster vents on top of the dash have a short flexible ducts. Mine were all rotted. Another issue I had is that the metal duct coming off the top of the plenum was never actually connected so there was a large air gap at that point which I sealed up.

When I had the fan motor removed, I wire wheeled it and painted it before I reinstalled it on the firewall...my 30+ year old fan looked new!
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