Question about 1987 Mercedes-Benz Mercedes Benz 190 Class
You need to use a pressure manifold gauge:
Connect the red hose to the high pressure side located in front of the radiator, connect the blue hose to the low pressure side located in front of the fuse box, there is a thick metallic tube that has a tire-style cap, unscrew that and attach it, purhcase R-12 refrigerant can of at least 1kg, then attach an adapter to the can and connect the yellow hose to this part, open up the flow valve and turn the can upside down while your car is running and the A/C is on.
Check for pressure, the high side should have a high pressure and low side should be as low as possible while the compressor clicks on. Google for the exact pressure numbers as I don't remember.
Just make sure that the AC compressor located at the bottom of the belts is engaged, this is engaged by the correct pressure setting automatically
Posted on Jul 22, 2013
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Posted on Jan 02, 2017
Remove the metal part of the ashtray, you will see two screws that hold the ashtray plastic part on, underthis is the screws for the lower panel
You can now carefully lift the whole panel away.
Posted on Mar 31, 2009
The high side is on the driver's side of the condenser. the low side is usuall in line with the fuel cooler hose in the left side of the engine compartment. They are somtimes placed near the a/c compressor on the low side (suction) hose.
Posted on Jun 01, 2009
Serpentine Belt Diagram - 87 Merc 190E
Go to the following web site below (copy and paste the web address below into your browser)
There are 2 PDF documents to open - above the photo on the site.
The first - the Routing Guide - shows the reference for the belt diagram (1987 MERC 190E) which is 6-2 on page 92 of the Guide.
The second PDF shows the belt diagram for 6-2.
Hope this helps.
Posted on Dec 13, 2009
SOURCE: need serpentine belt diagram
My sincere apologies for the severely delayed response.
I am going back to answer - unanswered questions. I have only been on this site for the past 4-months. Questions Posted have exploded (+55%) since joining.
I do not know if you still need this information, but I am answering it anyway. You may want to Print the Diagrams for future use.
CLICK on the following LINK. It has the Belt Diagrams you will need.
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Posted on Mar 04, 2010
If it wont turn over try the neutral safety switch, if it wont start in neutral either the switch most likely needs to be replaced.
Posted on Apr 13, 2010
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