If you are dong any type of work to the A/C system that requires you to open the system then you must replace this item.  Also if you are changing out your compressor, you must replace the dryer.  This item can be used on the following chassis models 116, 123 and 126.  Please include full VIN # with order.

For 116 and 126 cars order below

Russell's Review of the A/C Dryer:

This is one of those items that really improves your A/C system operation.  Over time the Dryer absorbs moisture from the system.  Installing a new dryer, will help return the efficiency of your A/C system.  I decided to do a pictorial on how to replace it and other A/C components on the Mercedes diesel maintenance tips page.

The A/C Dryer:

• New A/C dryer

• Link to my web site with full directions and pictorial  

If you are dong any type of work to the A/C system that requires you to open the system, then I highly recommend you replace this item.  Also if you are changing out your compressor, you must replace the expansion valve. This item can be used on the following chassis models 116, 123 and 126.  Please include full VIN # with order.

Russell's Review of the Expansion Valve:

This is one of those items that also really improves your A/C system operation.  Over time the expansion valve will start to corrode internally from the moisture present in the system.  In the 123 it is super easy to replace and well worth the small price.  I decided to do a pictorial on how to replace it, and other A/C components on the Mercedes diesel maintenance tips page.

The Expansion Valve contains:

• New Expansion Valve

• Link to my web site with full directions and pictorial 

Is your current A/C system not COLD enough?  Freeze 12 is a drop in replacement for R-12.  It is non-flammable and contains no CFC's.  No EPA license is needed to use Freeze 12.  Lower compressor head pressure than R-134a and comparable to R-12.  You will need to use a "side can tapper" with the basic kit.

I only have (3) cans left and then its gone forever!

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To buy this product, the EPA says you must be Section 609 certified!  Take the test online, its easy.  Then email me your certification number.

 EPA TEST ONLINE

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Russell's Review of the Basic Freeze 12 Refrigerant:

I have been using this product for several years with excellent results.  If you want really COLD A/C, that blows away R-134a, then you need to try it.  If you have an R-12 system that you were thinking about a retrofit to 134a, DON'T!  Freeze 12 produces much less pressure on your compressor and it will last much longer.  I never liked the performance of R-134a converted systems, because the condenser is NOT designed for it.  Using Freeze 12 requires no oil or O ring change.  Check out my pictorial on the Mercedes maintenance page and see how I got 38 degrees at the vent with Freeze 12.

The Basic Freeze 12 A/C Refrigerant kit contains:

• Three 12 oz cans of Freeze 12

• Link to my web site with full directions and pictorial 

Is your current A/C system not COLD enough?  Freeze 12 is a drop in replacement for R-12.  It is non-flammable and contains no CFC's.  No EPA license is needed to use Freeze 12.  Lower compressor head pressure than R-134a and comparable to R-12.  This kit has EVERYTHING to convert over to Freeze 12, adaptors, hose tapper, and EPA label and A/C vent thermometer.

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To buy this product, the EPA says you must be Section 609 certified!  Take the test online, its easy.  Then email me your certification number.

 EPA TEST ONLINE

***************************************************************************

Russell's Review of the Deluxe Freeze 12 Refrigerant:

I have been using this product for several years with excellent results.  If you want really COLD A/C, that blows away R-134a, then you need to try it.  If you have an R-12 system that you were thinking about a retrofit to 134a, DON'T!  Freeze 12 produces much less pressure on your compressor and it will last much longer.  I never liked the performance of R-134a converted systems, because the condenser is NOT designed for it.  Using Freeze 12 requires no oil or O ring change.  Check out my pictorial on the Mercedes maintenance page and see how I got 38 degrees at the vent with Freeze 12.

The Deluxe Freeze 12 A/C Refrigerant kit contains:

• Three 12 oz cans of Freeze 12

• Dispensing valve

• Charging hose

• Conversion fittings and a label

• Link to my web site with full directions and pictorial 

Need the professional way to charge the A/C on your car?  If you have A/C gauges then you need this tool set

Russell's Review of the 3 Way Can Tap Master Set:

If you have a set of A/C gauges or can borrow some, then you NEED this set.  You can use gauges that are set up for R-12, Freeze 12 or 134a with this set.  Side piercing style allows you to use any can size, including the smaller oil charge and stop leak can.  Two inserts are included to work with the smaller cans.  Side port will fit on the charging hose of R-12 or 134a.  Do your A/C the professional way and the way the dieselgiant does it!

The  Way Can Tap Master Set contains:

• One (1) side piercing can tap

• Two (2) adapters

• Link to my web site with full directions and pictorial 

If you have a small leak and you can't or don't  want to fix it try some stop leak.

Russell's Review of the Stop Leak:

While I am always a fan of repairing the leaks in an A/C system, there is a product available to those that choose not to or can't.  Depending on the size of the leak it may or may not work, but give it a try.

The Stop Leak kit contains:

• One (1) can stop leak.

• Link to my web site with full directions and pictorial 

If you are not rebuilding your system and just need to top off the oil, then the oil charge is a great way to get that done.  

Russell's Review of the Oil Charge:

Adding oil to a system that is already under pressure must be done by an oil injector or a pressurized can.  The oil charge is a safe and effective way to add 2 ounces of oil to your Freeze 12 charge.  Just add it the same way you would the freeze 12 stop leak or refrigerant.  If you are rebuilding your system and adding a new dryer or expansion valve I always prefer the BG oil, but this works great to systems already under pressure.

The Oil Charge kit contains:

• One (1) can oil charge.

• Link to my web site with full directions and pictorial 

BG Universal Frigi-Quiet® is a revolutionary new compressor lubricant that enhances cooling, even under the harshest of conditions. Utilizing unique, ashless anti-wear technology, BG Universal Frigi-Quiet® ensures quieter, cooler compressor operation and will prolong compressor life. It is compatible with all OEM compressor types using R-12, R-22, R-134a and CO2 refrigerant systems. It is 100% compatible with Mineral Oil, PAG and Ester lubricants. Therefore, it will not void OEM compressor warranties! BG Universal Frigi-Quiet® is unyielding when exposed to moisture and oxidation. It offers vast advantages over typical Mineral, PAG and Ester oils and can be safely used in compressors requiring lubricants ranging in viscosity from ISO 46 to ISO 100.

Russell's Review of the Frigi-Quiet Compressor Oil:

When I was first approached with this product I was very susceptible.  My good friend who is a BG rep told me to "just give it a try".  Well after I tried it I was sold!  On the older Mercedes, they use the R-4 compressor, which does not have a very good and reliable record.  Not to mention it is very noisy.  I can say that of the conversions I have done, and replaced the oil with the Frigi-Quiet , the results are amazing.  When the compressor is running you can't hear it.  All you can hear is the clutch engaging and that is it.  Smooth and silent.  In fact the last A/C conversion I did, the customer had to turn off the A/C on the way home because he said ..."it was too cold"  Can you say that about your A/C?

The Frigi-Quiet Compressor Oil contains:

• One 8 oz bottle of Frigi-Quiet Compressor Oil

• Link to my web site with full directions and pictorial 

Russell's Review of the A/C Temp Switch:

A very common cause of both the A/C not functioning correctly and the car running hot with the A/C on.  The temp switch is one of two switches that is on the receiver dryer and is the long narrow sensor the is mounted horizontal.  If this switch is not operating the cooling fan will not come on to lower the A/C head pressure and could overheat the car with the A/C on while sitting in traffic.

The A/C Temp Switch contains:

• One (1) A/C temp switch.

• Link to my web site with full directions and pictorial 

Russell's Review of the A/C Pressure Switch:

A very common cause of A/C compressor failure is the low pressure switch.  This switch is a safety device on the dryer to prevent compressor operation if the system is low on refrigerant.  If your compressor runs with the system low on refrigerant, then it will destroy it.  So do yourself a favor and replace it when you replace the dryer.

The A/C Pressure Switch contains:

• One (1) A/C pressure switch.

Replace you O rings when you replace the expansion valve and drier.

Russell's Review of the O Ring Kit:

Always replace your O rings when you change your expansion valve and drier.  Never ever skip this step!  O rings compatable with all refrigerants.

The O Ring Kit kit contains:

• Six (6) O rings

• Link to my web site with full directions and pictorial 

Russell's Review of the A/C Hose:

When these hoses fail and no longer hold pressure the only option is to replace them.

The A/C Hose contains:

• One (1) A/C hose.

• Link to my web site with full directions and pictorial 

Russell's Review of the Climate Control Servo:

Here is a real Mercedes debacle.  This system is plagued with faults and always ends up failing.  The main servo unit located in the engine compartment on the passenger side, controls the hot water flow to the heater core.  This Upgrade kit is designed to upgrade the unreliable analog and mechanical climate control system to modern digital microprocessor technology. This upgrade involves removing the OEM servo and amplifier. These are replaced with rugged industrial strength solenoid valves and a proprietary controller module.  Made by unwiredtools and warranted for 5 years.  Buying the original from Mercedes is over $1800 and will still eventually fail.

Chrysler designed and dumped this system due to problems in the late '70's and Mercedes started to use it in their cars.

The Climate Control Servo contains:

• One (1) climate control servo system.

• Link to my web site with full directions and pictorial