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#16
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One last point... to get to the evap &heater core you need to pull the evap/heater case as a unit out of the car. Then you can change either or both cores on the bench. If I can help while your going through this exercise let me know.
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#17
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you're the man
rjpeters98,
Thanks a bunch for the offer. I will keep on updating you and the other as I go through this project. Your last enrty was noted. Regards a2
__________________
a2 1978 280 CE silver 1986 560 SL black 1987 300 SDL cream 1994 SL 500 brilliant green 1997 E 300d dessert silver 2005 FORD F250 Superduty Crew cab 4x4 ____ADMU____ |
#18
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...JUST AN UPDATE
to the ongoing saga. Evaporator that I ordered came wednesday.Good thing I kinda know MBZ part numbering because this part started with a 140XXXXXX. That means it's a 140 chassis evap I had to call these people and complain. Readily, they picked up the part and still waiting for the replacement item. For the meantime, rcvr/dryr and exp valve are here. PAG46 and vaccum servos are all in the ups truck headed to Texas. Also bought a repair manual (A/C) and a small electronic label maker by "Brother" on sale for $19.95- office depo. So I can track my way back to reality.
I'm still driving the SL due to the leak is very minimal and the weather is pleasant. Next,......... the break down..."keep y'all intouch"
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a2 1978 280 CE silver 1986 560 SL black 1987 300 SDL cream 1994 SL 500 brilliant green 1997 E 300d dessert silver 2005 FORD F250 Superduty Crew cab 4x4 ____ADMU____ |
#19
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first day
well, I started on my evaporator change ,First dilema- wood consule won't budge- found out there is a screw underneath the radio w/c also requires a tool to get out. Therefore, dead stop for tonight. I have to be extra sweet to my wife so she can pass by the dealership to get these darn "radio pull out tool thingee" and the hook for the instrument cluster as well.
I had pulled the under- the- dash- cover of driver's side, center vent control, small glove compartment (which I broke a small pc. of plastic) Climate control box came out as well. time spent: 1hr:10min aggrevation level: mild-moderate
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a2 1978 280 CE silver 1986 560 SL black 1987 300 SDL cream 1994 SL 500 brilliant green 1997 E 300d dessert silver 2005 FORD F250 Superduty Crew cab 4x4 ____ADMU____ |
#20
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I'm watching,,,,, please keep us informed, thanks.
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95 SL500 Smoke Silver, Parchment 64K 07 E350 4matic Station Wagon White 34K 02 E320 4Matic Silver/grey 80K 05 F150 Silver 44K |
#21
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...couldn't stay away
.... used my label maker to mark wirng harness to vent, climate control unit, and just got the instrument cluster out by pushing from behind. Easiest way is work it side by side. the left( closer to the driver door) side came out faster due to my access from behind then with little help from the hole from where the center vent unit went, i was able to pursue the right(near the center of the car) side. Whalla, it's out. I think I'll stop now....for tonight. The interior is staring to look like a face w/o eyes...like in the horror films....
Intrument cluster removal: time spent: 17 mins Aggrevation level: none -mild
__________________
a2 1978 280 CE silver 1986 560 SL black 1987 300 SDL cream 1994 SL 500 brilliant green 1997 E 300d dessert silver 2005 FORD F250 Superduty Crew cab 4x4 ____ADMU____ |
#22
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day 3
.. started by removing the radio speakers. No real trick , just think like a german and you will be able to figue everything out.
The arm console came out quite easily. Remember to have the shift knob set on 1 so that the assembly will come out w/o snags. Now the passenger bolster and airbar. This is by far was the hardest issue to remove. I actually had my head wedged way inside the bolster looking in . I believe that there is a special tool to take the airbag out first, but I don't have that so I had to wiggle my arm ( and break it in a couple of places) to get to the remaining bolts holding the bolster. Believe me, the 2 other bolts might not find their way back in there. With the bolster out of the way, the airbag came out , It's a green and black wire with e RED connector. the stearing wheel came out next. A torx25 was used and I highly recommend a pneumatic(air tool) to take of the main hex. I came out in 5 sec. Finally the dash came out. I started at 6am in the morning and didn't let go until 2 pm. THe day was exhausting but alot of things where done. ciao
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a2 1978 280 CE silver 1986 560 SL black 1987 300 SDL cream 1994 SL 500 brilliant green 1997 E 300d dessert silver 2005 FORD F250 Superduty Crew cab 4x4 ____ADMU____ |
#23
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today, everything came out including the evaporator box total time 8.5 hrs.
Make sure that you disconnect the heater core hoses which goes to the engine bay (3 total) to make it easier for the bow to be manipulated .
__________________
a2 1978 280 CE silver 1986 560 SL black 1987 300 SDL cream 1994 SL 500 brilliant green 1997 E 300d dessert silver 2005 FORD F250 Superduty Crew cab 4x4 ____ADMU____ Last edited by a2aa; 10-13-2003 at 11:07 PM. |
#24
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Is it over? Did you finish? Been a long time since you posted.
Everything OK? |
#25
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tes...as a matter of fact.....
YES I DID!!!!!!! twenty six hours that's 26 total hrs on the vehicle and finally finished!! Ambient temp was 82---- vent temp with ragtop under full sun....38 degrees on stop and go traffic--Thanks for your inquiry. The copper evaporator really did work. No snags putting everything back in. For more info and pics, give me your e-mail addy and I'll send everything to you. For some reason, I couldn't post the pics on this site....I'm going to do an inservice on this r/r on our January Mercedes Benz Club meeting-- kinda out of season toipic but hey, we're in Texas. It may hit 85 degrees tomorrow. I rented the vacuum pump and didn't cost me a thing. Vacuumed it for 2 hrs and left the gauges on over night---m No changes....the system was tight! Again thanks for the inquiry-- I was going to finish the segment come late winter early spring so that many of the a/c problems are just arising for some of us- thus I would get more questions that I would be able to answer more specifically than just day by day account of the saga... But it was well worth the pain--- Emphasis on PAIN. All vacuum actautors replaced --thanks to Phil the parts man- heater core replaced; all green o-rings; rcvr/drier, exp valve; Total estimated spenditures: 900-1200 give or take. At least I know that EVERYTTHING under the dashboard is brand new.
__________________
a2 1978 280 CE silver 1986 560 SL black 1987 300 SDL cream 1994 SL 500 brilliant green 1997 E 300d dessert silver 2005 FORD F250 Superduty Crew cab 4x4 ____ADMU____ |
#26
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took it to a rally.......
Just took the SL to a 5.5 hr rally last saturday. The mercedes BEnz club went to 3 Texas vineyards for wine tasting and winding the backroads of the Hill Country. It was a comfortable 82 degrees. Top down with A/C engaged and set @ 68. For 4.5 hrs of the trip, the A/C worked wonderfully... then 15 miles away from home, it seized blowing air. Still feeling coldness on the vents but no "air" blowing through. I assummed that one of the vacuum actuators are defective and have to open up the system again, which I was not to excited about. But after inspecting the vents, the actuators ARE working well. So I opened the hood and walla.... the high pressure side..white as SNOW...IT FROZE!!!!!!!
After letting the system "defrost" for a couple of hrs, Everything worked just fine....... what a relief..... HAppy motoring
__________________
a2 1978 280 CE silver 1986 560 SL black 1987 300 SDL cream 1994 SL 500 brilliant green 1997 E 300d dessert silver 2005 FORD F250 Superduty Crew cab 4x4 ____ADMU____ |
#27
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Defective or loose evaporator temp sensor.
Peter
__________________
1972 220D ?? miles 1988 300E 200,012 1987 300D Turbo killed 9/25/07, 275,000 miles 1985 Volvo 740 GLE Turobodiesel 218,000 1972 280 SE 4.5 165, 000 - It runs! |
#28
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And/or undercharged...
- JimY |
#29
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thanks
I appreciate the input. I believe it's as simple as insulation of the hoses. I forgot to put back the insulation that is around the aluminum pipe from the exp valve which is where the freezing started. I also need to seal the opening from the fire wall to the evap a bit more. Isn't there a tarlike tape that you can wrap this thing with?
Again, thank you. a2
__________________
a2 1978 280 CE silver 1986 560 SL black 1987 300 SDL cream 1994 SL 500 brilliant green 1997 E 300d dessert silver 2005 FORD F250 Superduty Crew cab 4x4 ____ADMU____ |
#30
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The climate control on most MB's measures the evaprator temp for temp control and freeze-up protection if the expansion valve sticks.
Check the probe (thermistor on a stick) if you have one -- sometimes you have to add grease to the hole it fits in to get good thermal contact. If you don't have a temp sensor, chances are the expasion valve is bad -- it shouldn't let the evaporator get cold enough to frost. Peter
__________________
1972 220D ?? miles 1988 300E 200,012 1987 300D Turbo killed 9/25/07, 275,000 miles 1985 Volvo 740 GLE Turobodiesel 218,000 1972 280 SE 4.5 165, 000 - It runs! |
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