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Hi,
My 1970 Delta 88 has now had the entire front end refreshed, including shock absorbers. In the process, the AC had been recharged and we found the leak. Some idiot tightened the connection to the cooling coils under the dash so hard that it twisted the pipe and leaks, slowly. At this stage, the only major issue is the dang AC.
Anyone have experience removing the unit under the dash? Enormous task? I can have a radiator shop repair the unit if I can get it out. Have not even laid on the floor and looked under there yet. I have a replacement clock to install as well.
Also, rear shock recommendations? Its a cruiser.
Otherwise, enjoying local shows with it... well, not in this 100+temp hot spell....
Anyone have experience removing the unit under the dash?
The factory A/C is entirely on the engine side of the firewall. There are no freon connections or plumbing under the dash on the 65-70 full size cars. The heater core is under the dash. The evaporator for the A/C is not.
That would be the only way that freon lines would be under the dash, but if so, it's impossible to know how to access or remove it since it won't be described in the factory manuals. Yeah, there are generic things for working under the dash (pull out the seats and lay on the floor), but one can't really know the specifics of an aftermarket installation.
Oh. Went out and studied the animal. I get it - that big dang housing on the engine side of the firewall is where the coils are. I hope it can be removed with the engine in place.... I have to get it out to repair the pipe
Oh. Went out and studied the animal. I get it - that big dang housing on the engine side of the firewall is where the coils are. I hope it can be removed with the engine in place.... I have to get it out to repair the pipe
The part in the (second) photo is the expansion valve. The evaporator box does come off with the engine in place (though you might find it helpful to remove the distributor). The upper screws are on the engine side of the firewall; the lower screws are on the interior side of the firewall. I think you also have to remove some of the ducting under the dash to access all the screws.
Well, I did not give up on my AC, but almost gave up on the entire car due to Title issues - getting closer to resolution. So the AC: I removed the cooling coil assembly and then the coils. I can now take it in for replacing the twisted pipe. When I went to remove the blower plenum assembly, part of a vacuum control snapped off (dang they use some thin plastic!). Here's the part that came off. This is part of the control that selects the air source (outside-cowl, or inside). I can't seem to hit the magic search words to find the part for replacement. Anyone know what this valve is called? or a source? Worse case I can rtv this back on and it may last forever. Thanks.
Actually found the part, I think, as it looks identical and US PAT Pending numbers match, but site says not for 1970 Delta 88. Same thing on another site.... Rrrrr.
I've got a 1970 Delta 88 parts car if you want to try a used part. It also looks like the rod is riveted to an arm that opens/closes the flap. If you go with the new part you'll need to make that change. I'm up in Oregon so shipping shouldn't be too bad, let me know what you think. John
Well, I still haven't figured out how to post pictures in PM's yet! So here's the pictures and I'll send you a PM to cover the transaction if you want the part. Yes I did test it and it holds vacuum. John
June 20th, 2017, 07:57 AM
