It's Satan's Official Seal....

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Did you just pass my 740 at 200 kmh in a 300SD?????

1978 300SD 'Phil' - 1,315,853 Miles And Counting - 1, 317,885 as of 12/27/2012 - 1,333,000 as of 05/10/2013, 1,337,850 as of July 15, 2013, 1,339,000 as of August 13, 2013



100,000 miles since June 2005 Overhaul - Sold January 25th, 2014 After 1,344,246 Miles & 20 Years of Ownership

You guys are looking at the scribe of Bert,it took an Indiana Jones type of search thru halls of buried MB treasure to bring forth this jewel of jewels.Did you find it on some mountain jungle platue ?

Is there supposed to be a spring under Satans Maze of Doom to keep it seated against the Wheel of Frustration? (Right under Medusas wig.)

The essence appears to be leaking around Satans Seal. I don't remember a spring being in there but the unicorns may have carried it away...

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My occupational hazard bein'
my occupation's just not around...
1980 300SD
1980 300SD

My TD dash has those round knob-thingeys, like my 240D, to run the heat & AC!

Happy Motoring, Mark

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DrDKW

AC is serious business requiring serious switches. Do you launch a nuclear missile with a "knob"? Do you send men into space by rotating a "knob"?

I didn't think so...

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My occupational hazard bein'
my occupation's just not around...
1980 300SD
1980 300SD

Not to steal the thread since its all relevant info. The only issue i have with my ACC II system is, no heat, except for on defrost. If i flip the ac compressor switch off, the blower shuts off as well, that didn't used to happen.... Does anyone have any idea which circuit might have the vacuum leak from hearing my symptom?

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1985 300TD Turbo Euro-wagon
1979 280CE 225,200 miles
1985 300D Turbo 264,000 miles
1976 240D 190,000 miles
1979 300TD 220,000

GONE but not forgotten
1976 300D 195,300 miles
1983 300D Turbo 175,000 miles

http://i42.photobucket.com/albums/e3...e485-1-2-1.jpg

"When the switch is "OFF" on max cooling, the switchover valves (28 and 29) will open the blower flap to 100% fresh air as well as the flaps in air ducts - center for legroom under climate control cabinet"

From the sacred text... 83.3-600/5 "Operation of Automatic Climate Control System and Tester"

Valves 28 and 29 are behind the button panel.

Chrysler be praised!!

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My occupational hazard bein'
my occupation's just not around...
1980 300SD
1980 300SD

But my rotary knobs are still working, while countless servos, amplifiers, vacuum-pods and monovalves have bit the dust!

I wonder how far NASA would have gone with a Chrysler servo?

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DrDKW

I'll take a look at that circuit tomorrow. Still dunno if that's causing no heat problem. With my temp wheel at 85 degrees and set on auto-lo or auto hi, the blower will never come on... hmmm

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1985 300TD Turbo Euro-wagon
1979 280CE 225,200 miles
1985 300D Turbo 264,000 miles
1976 240D 190,000 miles
1979 300TD 220,000

GONE but not forgotten
1976 300D 195,300 miles
1983 300D Turbo 175,000 miles

http://i42.photobucket.com/albums/e3...e485-1-2-1.jpg

They had one on the Space Shuttle Challenger..........

__________________
Did you just pass my 740 at 200 kmh in a 300SD?????

1978 300SD 'Phil' - 1,315,853 Miles And Counting - 1, 317,885 as of 12/27/2012 - 1,333,000 as of 05/10/2013, 1,337,850 as of July 15, 2013, 1,339,000 as of August 13, 2013



100,000 miles since June 2005 Overhaul - Sold January 25th, 2014 After 1,344,246 Miles & 20 Years of Ownership

You need to start testing things according to the scriptures.

Correct ACC II operation will keep the blower off until coolant temp reaches a specified temperature.

In the AUTO LO/AUTO HI/Bi-LEVEL positions, and the temp wheel set to cold, the blower will start as soon as vaccum is developed to a specified degree.

Comon cause of no heat is a stuck hot water control valve which causes the servo mechanism to freeze up.

It is written that any type of stop leak or Aluma-Seal will general lock up the servo's water valve.

You need to start from the beginning and start testing every circuit. Do not skip any steps. There are no shortcuts....Robert

__________________
Did you just pass my 740 at 200 kmh in a 300SD?????

1978 300SD 'Phil' - 1,315,853 Miles And Counting - 1, 317,885 as of 12/27/2012 - 1,333,000 as of 05/10/2013, 1,337,850 as of July 15, 2013, 1,339,000 as of August 13, 2013



100,000 miles since June 2005 Overhaul - Sold January 25th, 2014 After 1,344,246 Miles & 20 Years of Ownership

There is a temp switch on the very bottom of the servo. Connect the 2 lines (black and yellow I believe) together to bypass it for troubleshooting.

If you really want to risk the wrath O' the SERVO GODS then isolate your ACC vacuum circuit from the rest of the cars vacuum systems. It does need to be connected to the vacuum reservoir and you need the one way valve installed.

Before starting follow these steps:

1-Sleep with the "Operation of Automatic Climate Control System" manual under your pillow. (A yellow binder helps but some swear by a green and black one)

2- Get up and burn some incense with a "woody" character. (Reminiscent of the Black Forest).

3- Put this on repeat in the garage: http://www.youtube.com/watch?v=gChOifUJZMc

4- DO NOT let your Mity Vac get more than 2 feet from your RIGHT HAND during the procedure. And just go ahead and shave your head before starting. This will save time.

Allow 6-8 weeks for thorough diagnostics. (Add another 2-4 weeks for remedies)

Light hallucinogenics have been proven to be helpful but a little weed smoked through a windshield washer and vacuum line bong helps...

__________________
My occupational hazard bein'
my occupation's just not around...
1980 300SD
1980 300SD

The UnwiredTools digital servo upgrade is $600 of frustration-removing bliss.

Dear God How do I print the manuscript

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Willie White
1980 300SD 116
82 D engine and transmission
If something can go wrong--it will

From the land of Michigan, in the town of Detroit, as master called Chrysler cameth forth. "Behold, you shall have cool air in the heat of the desert and warm air to comfort you in the night. The servo that I bestoweth unto you shall be your salvation." As the servo was used by the people, they rose up, dashing the servo against the rocks. "Thy promise of coolness in the desert and warmth at night is false. Thou hast bared false witness unto us." Chrysler said "Behold, I shall send the servo to a far away land." And thus the servo was shunned unto the land of Germany where it found its way to the town of Stuttgart. The servo then served the neweth master well until it was smited and became clogged and cracked. The people had no choice but to use the servo until the people learned to changeth the servo into something good. "Let cool air flow unto our faces and warm air comfort us at night for thy servant hast made an aluminum body for soeth it shall not crack and the other servant has used the fluid so prophesied so it may not become clogged."
The people rejoiced for they have been saved.

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"Life is tough...it's even tougher if you're stupid." John Wayne


Dave
Pawleys Island, SC

'79 300CD