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#4
05-22-2007, 09:20 AM
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Bump - does anybody have a pic or diagram of the A/C cowling removed to access the TXV? Does the wiper transmission have to come off?
__________________
08 W251 R350 97 W210 E320 91 W124 300E 86 W126 560SEL 85 W126 380SE Silver 85 W126 380SE Cranberry 79 W123 250 78 W123 280E 75 W114 280 
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#5
05-22-2007, 10:18 PM
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I've done 2 in the past week
First recover what's left of the refrigerant. Remove cowl panels on each side of wiper assembly. Remove wiper assembly. Remove large cowl paneling under wiper assembly. Unscrew 10mm nut to remove lines to expansion valve. Unscrew two allen bolts going through expansion valve(these are very small allens, like a 3 maybe. Remove expansion valve and replace all 4 orings. Replace the reciever drier and all o rings. Check to make sure the lines going to the expansion valve are not leaking as these commonly do. I hope this helps. The job should take you a few hours.
Dustin
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#6
05-22-2007, 10:34 PM
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Very helpful - I should be trying this within the next week or so. How difficult is the removal of the wiper assembly?
__________________
08 W251 R350 97 W210 E320 91 W124 300E 86 W126 560SEL 85 W126 380SE Silver 85 W126 380SE Cranberry 79 W123 250 78 W123 280E 75 W114 280
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#7
05-23-2007, 09:17 PM
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It's a very easy job in my opinion, but I have done it a few times. When you pop the hood, on each side of the cowling you'll see a screw. Remove the screw. The cowling then slides towards the center of the car. Remove each side( one piece of cowling on each side of the wiper). Next you'll see 4 screws on the driver's side and a push pin, and 3 screws on the pass. side and a push pin(white plastic pin). Remove all of this hardware. Now you can unsnap the cowling from the front (towards the engine) and remove. There is a plastic trim panel under the wiper assembly in the center that slides out as well. Now remove the 3 10mm nuts(2 nuts and one bolt) which secures the wiper assembly. Unclip the wiper assembly from the white plastic clip in the front. Unplug the wiper and remove. Once you have removed the wiper, remove the large wiper mounts with a pair of pliers or if you have a socket large enough.(they are not that tight). Now, with a little pulling and tweaking you can remove the large cowling which sits underneath the wiper. You can also choose to leave this in if you wish, but you have more room if you remove it. Also if you choose to remove it you will have to remove that white plastic piece that the wiper clips to. I think it takes a 5 allen? Remove the 10mm nut that holds the lines to the expansion valve...
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#8
05-23-2007, 09:41 PM
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the nice thing about that setup..is that the evaporator is right there and can be replaced as well....
__________________
1989 300ce 129k ( facelifted front,updated tail lights, lowered suspension,bilstein sports, lorinser front spoiler, MOMO steering wheel, remus exhaust,stainless steel brake lines). (Gone) 1997 s320 154k (what a ride). Sold with 179k miles. Replaced with Hyundai Equus 1994 e320 Cabriolet 108k  1972 280se 4.5 153k Owned for 12 yrs, sorry I sold it [/SIGPIC]
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#9
05-25-2007, 05:48 PM
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It's right there if you remove the dashboard.
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#10
05-25-2007, 05:52 PM
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quite a few years ago...when i was trying to decide on a 190 or 300, i saw a write up with pictures.. it showed someone accessing and replacing the evaporator from the engine bay..
i don't think i am that senile yet... could be though.
__________________
1989 300ce 129k ( facelifted front,updated tail lights, lowered suspension,bilstein sports, lorinser front spoiler, MOMO steering wheel, remus exhaust,stainless steel brake lines). (Gone) 1997 s320 154k (what a ride). Sold with 179k miles. Replaced with Hyundai Equus 1994 e320 Cabriolet 108k 1972 280se 4.5 153k Owned for 12 yrs, sorry I sold it [/SIGPIC]
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