I've been working on A/C systems for 30+ years... them's pristine... you ought to see what a coil looks like in a rental house that originally had a floor furnace, converted to a 30x36 return air grille... that's SUPPOSED to have a filter changed each month for the 15 or so years the tennant has lived there with dogs and cats and kids...
imagine the blower cage on the car is 16" across, the coil is 30" square, and BOTH are completely filled with hair, and leaves, and toys, and dead animals, and clothes, and shoes, and food, and, and and and and...
I'll clean car systems ANYDAY!!!
renters SUCK!

hotel wall units are only MARGINALLY better...

__________________
John HAUL AWAY, OR CRUSHED CARS!!! HELP ME keep the cars out of the crusher! A/C Thread
"as I ride with my a/c on... I have fond memories of sweaty oily saturdays and spewing R12 into the air. THANKS for all you do!

My drivers:
1987 190D 2.5Turbo
1987 190D 2.5Turbo
1987 190D 2.5-5SPEED!!!

1987 300TD
1987 300TD
1994GMC 2500 6.5Turbo truck... I had to put the ladder somewhere!

Oh great I'm never going out now - even when the children have grown up...

__________________
1992 W201 190E 1.8 171,000 km - Daily driver
1981 W123 300D ~ 100,000 miles / 160,000 km - project car stripped to the bone
1965 Land Rover Series 2a Station Wagon CIS recovery therapy!
1961 Volvo PV544 Bare metal rat rod-ish thing

I'm here to chat about cars and to help others - I'm not here "to always be right" like an internet warrior



Don't leave that there - I'll take it to bits!

I can totally relate to that. the place I am in I believe did not have the blower serviced in about a decade or so, when I removed the squirrel cage, firstly it was not working as a fan as the little blades were now cylinders. I counted 20 roach mummies and tons of other stuff like lint, hair etc. I cleaned the coil in situ the best I could with drip pans and otc products.

I will almost never want to do that job ever again. YUCK.

__________________
2012 BMW X5 (Beef + Granite suspension model)

1995 E300D - The original humming machine (consumed by Flood 2017)
2000 E320 - The evolution (consumed by flood 2017)

on the plus side... I usually find hundreds of marbles when I clean out one of those systems...

__________________
John HAUL AWAY, OR CRUSHED CARS!!! HELP ME keep the cars out of the crusher! A/C Thread
"as I ride with my a/c on... I have fond memories of sweaty oily saturdays and spewing R12 into the air. THANKS for all you do!

My drivers:
1987 190D 2.5Turbo
1987 190D 2.5Turbo
1987 190D 2.5-5SPEED!!!

1987 300TD
1987 300TD
1994GMC 2500 6.5Turbo truck... I had to put the ladder somewhere!

You can get that foam cleaner at Home Depot or anywhere that refrigeration supplies are sold. It works great, but does not substitute for disassembly and cleaning.

__________________
2001 SLK 320 six speed manual
2014 Porsche Cayenne six speed manual

Annoy a Liberal, Read the Constitution

I used the foam cleaner on the evaporator and heater core. It would have had very limited cleansing power without disassembly. In addition, these type of products don't require rinsing on coils that produce condensation.

__________________
daw_two
Germantown, TN

Links:
Sold last car --- 05/2012 1984 300D Light Ivory, Red interior
Cluster Needles Paint
New Old Stock (NOS) parts

Past:
3/2008 1986 300SDL "Coda"
04/2010 1965 190D(c) "Ben"
& many more

X2, Renters suck. been there.

I rent now and take care of the place as if I owned it, but when I rented out a place I once owned ( I know getting a little Here) the place had Electric Heaters in ea room. I had installed a Fireplace Insert. wasn`t getting my rent money so went up there to see what`s up. I see a tin pipe sticking out one of the rear Bedroom windows. they had dragged the Insert to the Bedroom, set it on some bricks and had the fire going in the insert.


I have a 240D Air/Heat box I took apart, and it`s AC Condenser was pretty full of debris too. I really don`t see how spraying is some Condenser Cleaner will make all that stuff disappear.

Charlie

__________________
there were three HP ratings on the OM616...

1) Not much power
2) Even less power
3) Not nearly enough power!! 240D w/auto

Anyone that thinks a 240D is slow drives too fast.

80 240D Naturally Exasperated, 4-Spd 388k DD 150mph spedo 3:58 Diff

We are advised to NOT judge ALL Muslims by the actions of a few lunatics, but we are encouraged to judge ALL gun owners by the actions of a few lunatics. Funny how that works

This foam was not the home depot type thing, the can said made in japan something and it came out like heavy shaving foam under massive velocity, it would react (start to grow) when it touched dirt and the foam would turn gray and finally into black ink colored stuff after about 10 minutes.

Smelled heavily like lemony butane.

msybe vstech knows of something similar coz that toyota dealer says they dont have it anymore and its no longer supplied as all newer models have cabin filters.

I had to change the expansion valve on that one so when I had the dash apart I cleaned out everything, all ducts were major dirt caves too.

__________________
2012 BMW X5 (Beef + Granite suspension model)

1995 E300D - The original humming machine (consumed by Flood 2017)
2000 E320 - The evolution (consumed by flood 2017)

I don't know, that evap of mine seemed to be 85% clogged. The dirt and resulting water from the evap caused it to deteriorate.

New unit is coming soon. BTW - the w123 evaporators according to my local parts guy will be discontinued this year.


.

__________________
1983 123.133 California
- GreaseCar Veg System

I'm planning to use the limited space in the cowling to add in a cabin filter for the outside air intake. I am also going to put a cabin filter for the inside air intake.

So far this is for the outside air intake.

This is the cowling opened up with the windshield wiper assembly removed. Not shown, but part of the wiper motor sits on top of the HVAC intake. It would of been easier to add in a filter if this was not the case.



Another shot.



Hopefully the filters I choose will be sufficient because they are on the small side. They are for the 1999 - 2002 Chevrolet Silverado. They come in a pack of two and Measures 5 1/4" x 9 1/8". Originally suppose to be installed side by side in the Silverado HVAC box. But I will use one for the outside air side and one for the inside air side.



I chose this filter because of the space limitations in the cowling. This is where I plan to place the filter. I am going to make some ducting from fiberglass to snake around the windshield wiper motor and connecting rods.





Any thoughts?



.

Attached Thumbnails

       

__________________
1983 123.133 California
- GreaseCar Veg System

How long did it take to get the air box out? I have heard people say many day's work, but maybe there is a trick they don't know. I have looked at several 300D's partially stripped in the junkyard, but it looks like a lot of work even after removing much of the console. Specifically, I need to change the heater core in one of my cars, plus a cleaning inside.

From someone who spends 100+ nights a year in hotels now I am totally disgusted.

Almost every Hampton Inn in the country has that stupid through the wall buzz box system.

__________________
The OM 642/722.9 powered family
Still going strong
2014 ML350 Bluetec (wife's DD)
2013 E350 Bluetec (my DD)

both my kids cars went to junkyard in 2023
2008 ML320 CDI (Older son’s DD) fatal transmission failure, water soaked/fried rear SAM, numerous other issues, just too far gone to save (165k miles)
2008 E320 Bluetec (Younger son's DD) injector failed open and diluted oil with diesel, spun main bearings (240k miles)

1998 E300DT sold to TimFreeh
1987 300TD sold to vstech

I removed a manual airbox in the junkyard in less than 3 hours. Cleaning takes longer because you have to decide what to do on all the flaps. Do you re-install insulation or not. You might want to look over in my 1984 Light Ivory 300D thread. Re-installation of the airbox is long; still working on it.

__________________
daw_two
Germantown, TN

Links:
Sold last car --- 05/2012 1984 300D Light Ivory, Red interior
Cluster Needles Paint
New Old Stock (NOS) parts

Past:
3/2008 1986 300SDL "Coda"
04/2010 1965 190D(c) "Ben"
& many more

I would say it would take that long as daw_two stated, I've been taking my good ole time on this.



dmorrison did a write up already.

PeachPartsWiki: Replacing the A/C Evaporator


.

__________________
1983 123.133 California
- GreaseCar Veg System

I originally had the cheeky idea to just cut a hole in the HVAC box to access the "fresh" air side of the evaporator for cleaning... too bad that's the side that's against the firewall

-J