Location: Reedsburg, WI
Posts: 4,026
My VIN: 5180
Club(s): (DMWC) (DCUK)
DENNIS
VIN 5180, Frame 3652, STAGE II, DM-eng Solid State Solutions (RPM Rly, Dm.Lt.Mod., Fan Fail Mod. , FAN Rly, HS.Rly) , HID headlights, SPAX user since 2009, Eibach springs, M Adj. Rear LCA's, DPNW poly-sway bar kit, DMCEU LCA Stabilizer link kit, DMCMW Illuminated door sills, Aussie Illuminated SS Shifter plate, REAL MOMO EVO Steering wheel, DELOREANA Extended View Side Mirrors w/ Heaters, DELOREANA LED Door Lights.
Thanks! I'll do that.
Yeah, I expected a failed compressor or a plugged orfice tube, but I have yet to check the evaporator and condenser. Thanks for the air gap specs, I'll be sure to check it during assembly. I checked that during evaluation before disassembly and it was within spec.
Correct, but I tested the system 3 times before teardown and the high side gauge:
- needed to be purged
- showed readings all 3 times (and some mild fluctuations)
- and went negative during vacuuming.
If either side was not connected, I would expect a zero reading, right?
Good discussion.
Regardless, I'm in the refurbishment process now, which I needed to do anyway to replace the seals, orifice tube and accumulator.
Dana
1981 DeLorean DMC-12 (5 Speed, Gas Flap, Black Interior, Windshield Antenna, Dark Gray)
Restored as "mostly correct, but with flaws corrected". Pictures and comments of my restoration are in the albums section on my profile.
1985 Chevrolet Corvette, Z51, 4+3 manual
2006 Dodge Magnum R/T (D/D)
2010 Camaro SS (Transformers Edition)
Location: Reedsburg, WI
Posts: 4,026
My VIN: 5180
Club(s): (DMWC) (DCUK)
In case you didn't know this was an available resource.
Sanden SD AC Compressor Service Manual
https://r.tapatalk.com/shareLink?sha...3&share_type=t
DENNIS
VIN 5180, Frame 3652, STAGE II, DM-eng Solid State Solutions (RPM Rly, Dm.Lt.Mod., Fan Fail Mod. , FAN Rly, HS.Rly) , HID headlights, SPAX user since 2009, Eibach springs, M Adj. Rear LCA's, DPNW poly-sway bar kit, DMCEU LCA Stabilizer link kit, DMCMW Illuminated door sills, Aussie Illuminated SS Shifter plate, REAL MOMO EVO Steering wheel, DELOREANA Extended View Side Mirrors w/ Heaters, DELOREANA LED Door Lights.
Location: Northern NJ
Posts: 8,583
My VIN: 10757 1st place Concourse 1998
If you didn't depress the service valves and tried to pull a vacuum you would see a negative reading on your gauges. It would be the vacuum in the hoses right up to the service valves. You might think you have a vacuum going into the system but it only goes up the the cores of the service valves. It is possible the clip that depresses the cores is missing OR you put the hoses on the manifold on backwards and the clips are on the manifold side. One reason when I pull a vacuum I like to use a core extractor. That way I KNOW I am into the system and I have a much larger passageway into the system.
David Teitelbaum
Dana
1981 DeLorean DMC-12 (5 Speed, Gas Flap, Black Interior, Windshield Antenna, Dark Gray)
Restored as "mostly correct, but with flaws corrected". Pictures and comments of my restoration are in the albums section on my profile.
1985 Chevrolet Corvette, Z51, 4+3 manual
2006 Dodge Magnum R/T (D/D)
2010 Camaro SS (Transformers Edition)
While waiting for a special tool for the compressor, I was finally able to remove the A/C Accumulator yesterday. I struggled to crack the evaporator to accumulator connection loose, mainly due to space and the angle. I have heard that you can access this fitting via the fuel tank access panel, however, for me, I found the heater and fuel hoses in the way. So this is the position that I was best able to reach it. After trying a special 1 1/16" crow's foot and angled combination wrench, the tool that accomplished the task was an adjustable wrench. Who knew!! I removed the bracket ring first but snugged up the bottom fitting again (which I had already loosened) to keep things as rigid as possible.
image.jpg
I was very cautious to avoid bending the soft aluminum evaporator tubes. I used the the other 2 tools to gently work the #12 male o-ring fitting back. I also put the liquid line back on to help keep that evaporator tube as steady as possible.
image.jpg
Success! Here are the tools that I used. 1 1/16" is the proper size wrench on the evaporator end and 1 1/4" on the accumulator side. Same sizes for the bottom tube to #12 suction hose. Although, I found that I didn't need the 1 1/4" wrench on the top fitting as I held the accumulator steady with my hand.
image.jpg
I packaged it up and sent it away to Original Air in Tampa today for rebuilding. Fingers crossed!
image.jpg
Last edited by DMC-81; 09-25-2017 at 09:46 PM.
Dana
1981 DeLorean DMC-12 (5 Speed, Gas Flap, Black Interior, Windshield Antenna, Dark Gray)
Restored as "mostly correct, but with flaws corrected". Pictures and comments of my restoration are in the albums section on my profile.
1985 Chevrolet Corvette, Z51, 4+3 manual
2006 Dodge Magnum R/T (D/D)
2010 Camaro SS (Transformers Edition)
Today, I cleaned the small portion of the frame behind the accumulator.
Before:
After:
Early cars up to a certain VIN don't have a high pressure switch (or safety release valve), so, as part of my refurbishment of this system, I'm going to add them. First to be installed is the DMC high pressure switch wiring harness (110526). One end needs to go through the hole in the firewall. First, I threaded some spare wire that I had through the hole from the inside. Then I taped it to the harness. I put plastic around the connector to protect it from the the gooey cork tape.
I found that it was too tight to squeeze between the biggest space between the 2 evaporator tubes. Because the molex connector was the thing that got caught up, I carefully removed it and taped the harness to the spare wire that I had, then taped it up:
On this second attempt, it threaded through easily. Notice the connector with the jumper attached. This is where it connects on later cars. On my early car, the provision was there in the main harness, but it wasn't used.
After reinstalling the connector, I removed the factory jumper and plugged the harness in, threaded the extra harness back through to the outside, then zip tied it out of the way:
Now I have both low and high pressure connectors ready to go:
Dana
1981 DeLorean DMC-12 (5 Speed, Gas Flap, Black Interior, Windshield Antenna, Dark Gray)
Restored as "mostly correct, but with flaws corrected". Pictures and comments of my restoration are in the albums section on my profile.
1985 Chevrolet Corvette, Z51, 4+3 manual
2006 Dodge Magnum R/T (D/D)
2010 Camaro SS (Transformers Edition)
Location: Reedsburg, WI
Posts: 4,026
My VIN: 5180
Club(s): (DMWC) (DCUK)
That is what I had to do when I replaced my Relocated my HP switch to the Outlet adapter on the lower condenser connection.
Btw, is that HP switch harness about 4 ft long? If so, it is intended to reach the HP switch at the condenser. The early version that used the Hub hose assembly that had the switch a few inches away from the accumulator was a much shorter harness.
DENNIS
VIN 5180, Frame 3652, STAGE II, DM-eng Solid State Solutions (RPM Rly, Dm.Lt.Mod., Fan Fail Mod. , FAN Rly, HS.Rly) , HID headlights, SPAX user since 2009, Eibach springs, M Adj. Rear LCA's, DPNW poly-sway bar kit, DMCEU LCA Stabilizer link kit, DMCMW Illuminated door sills, Aussie Illuminated SS Shifter plate, REAL MOMO EVO Steering wheel, DELOREANA Extended View Side Mirrors w/ Heaters, DELOREANA LED Door Lights.
Dana
1981 DeLorean DMC-12 (5 Speed, Gas Flap, Black Interior, Windshield Antenna, Dark Gray)
Restored as "mostly correct, but with flaws corrected". Pictures and comments of my restoration are in the albums section on my profile.
1985 Chevrolet Corvette, Z51, 4+3 manual
2006 Dodge Magnum R/T (D/D)
2010 Camaro SS (Transformers Edition)
Great work, I'm enjoying reading this overhaul.
May I suggest that as soon as you connect the accumulator, as it also contains the drier silica gel, immediately pull a vacuum in to prevent the gel from absorbing moisture from the atmosphere/ moisture present by air in the refrigerant pipes.
Good luck with the project
RIP Rob van de Veer Top bloke
I say Sir, I must be mad, one loves fixing K-Jet !
Make sure there's plenty in the tank for the weekend chaps....