Installing a CompressorWorks R4 into a W123 - Page 2 - PeachParts Mercedes-Benz Forum

buch32 · #16 06-21-2012, 06:45 PM

Quote:

Originally Posted by vstech

I've installed dozens of them. ALWAYS a happy customer with it!

if you've got any questions, just start your own thread, and I'll likely see it, and chime in with help for ya!

I paid $169.99..free shipping from a top rated ebay seller. It looks super and came with the sealing washers. Is that a good price? Thanks

vstech · #17 06-21-2012, 07:34 PM

if it's a real CW compressor, and it came with the red and green washers, then yes, it's a great price.

buch32 · #18 06-21-2012, 08:51 PM

Quote:

Originally Posted by vstech

if it's a real CW compressor, and it came with the red and green washers, then yes, it's a great price.

If it is a copy from ***** it's an excellent job. I got it from *******************
Packaging was far above other r-4 units I have purchased. Likewise for the documentation on the box and inside.
Sealing washer package #150054 contained Yellow, Red, Green washer and the long and short Inserts. Also assembly insttructions.
CW part # 620230.
Not sure yet as to when I will install it.
Hope this helps.

Please do not list competing parts suppliers on the forum! thanks!

vstech · #19 06-21-2012, 11:05 PM

you can toss all the parts but the red and green washers. the yellow one is for a different car, as are the two inserts.

buch32 · #20 06-22-2012, 09:16 AM

Quote:

Originally Posted by vstech

you can toss all the parts but the red and green washers. the yellow one is for a different car, as are the two inserts.

BIG thank you...my car is 116, 1980 300SD ...YAK used the yellow and green on his 123...is that because the manifolds are different? The CW compressors 620230 are the same.

edge · #21 06-22-2012, 09:47 AM

I need to do the same. Wifey is driving the 83 300D after we sold the E420 which had ice cold A/C. Maybe we should just continue on this thread with the repair process to keep it all in one place for future DIY?

buch32 · #22 06-22-2012, 05:51 PM

Quote:

Originally Posted by edge

I need to do the same. Wifey is driving the 83 300D after we sold the E420 which had ice cold A/C. Maybe we should just continue on this thread with the repair process to keep it all in one place for future DIY?

Ok by me if our moderator approves...

Yak · #23 06-22-2012, 07:12 PM

Quote:

Originally Posted by buch32

BIG thank you...my car is 116, 1980 300SD ...YAK used the yellow and green on his 123...is that because the manifolds are different? The CW compressors 620230 are the same.

The manifolds may be different. The driving factor is the interface between the manifold and the compressor.

Your compressor has the same model number as the one I installed. The milled-out holes on the back of the compressor have different depths and different diameters.

The W123 manifold in my car (and I assume most W123's) had a flat surface with a short section of tubing. The yellow plus the larger diameter hole and shallow depth, plus the green and the smaller hole and deeper depth combined for a flat surface a mm or so above the surface of the compressor.

When you tighten this combination of parts down, then you're compressing the rubber in the washers for a tight seal.

I assume it would also be possible to get close by using the red and the green, and this would create a bit more stand-off from the compressor.

Not all R4's are the same. Older ones used O-rings instead of sealing washers, as described above, my Harrison used two same-size black ones.

I would suggest that if you don't use the yellow one, then you 'might' need the little section of tubing in the kit to keep the sealing washer centered in the port since the milled out diameter of the larger hole is a few mm larger than the red or green. Maybe vstech will chime in there.

I'd definitely dry-fit before committing to the install with oil in the compressor and being upside down on your back. It sucks to be in that position trying to figure out why things don't fit together...

Yak · #24 06-22-2012, 07:29 PM

From the link in post 5:

Green: 5.5 mm, 29.9 mm
Red: 3.8 mm, 29.9 mm
Yellow: 3.0 mm, 33.2 mm

Good pics from a JimmyL thread here: AC manifold vs compressor vs seals vs my brain pan

vstech · #25 06-23-2012, 12:29 AM

I am NEARLY certain, I used the red, and the green...

now, I gotta go dig out the spare parts, bin and verify what was left...

ROLLGUY · #26 06-23-2012, 12:41 AM

Quote:

Originally Posted by vstech

I am NEARLY certain, I used the red, and the green...

now, I gotta go dig out the spare parts, bin and verify what was left...

It seems to me that every time I have done one, I have used the red and green (123's).

buch32 · #27 06-23-2012, 11:37 AM

Quote:

Originally Posted by Yak

The manifolds may be different. The driving factor is the interface between the manifold and the compressor.

Your compressor has the same model number as the one I installed. The milled-out holes on the back of the compressor have different depths and different diameters.

The W123 manifold in my car (and I assume most W123's) had a flat surface with a short section of tubing. The yellow plus the larger diameter hole and shallow depth, plus the green and the smaller hole and deeper depth combined for a flat surface a mm or so above the surface of the compressor.

When you tighten this combination of parts down, then you're compressing the rubber in the washers for a tight seal.

I assume it would also be possible to get close by using the red and the green, and this would create a bit more stand-off from the compressor.

Not all R4's are the same. Older ones used O-rings instead of sealing washers, as described above, my Harrison used two same-size black ones.

I would suggest that if you don't use the yellow one, then you 'might' need the little section of tubing in the kit to keep the sealing washer centered in the port since the milled out diameter of the larger hole is a few mm larger than the red or green. Maybe vstech will chime in there.

I'd definitely dry-fit before committing to the install with oil in the compressor and being upside down on your back. It sucks to be in that position trying to figure out why things don't fit together...

Thanks YAK--Tray Carlisle recommends the Yellow and Green for the 1980 300SD. Appreciate your input.

vstech · #28 06-23-2012, 09:07 PM

I have red spacers left in my bin, so that means the YELLOW and GREEN were used.
sorry my brain fart left bad info!

edge · #29 06-24-2012, 02:16 PM

Autozone has an excellent DVD on A/C repair for $8. It's great for newbies like myself and makes me comfortable with tackling this job. I have my indy giving me a price of a compressor replacement fix. If it's prohibitive, I am going to go this route with enviro-safe refrigerant. What concerns me about r134 repairs is that they don't seem to last after all the money spent. The PO of my 83 300D had her indy retrofit r12 to r134 and it only lasted 2-3 years before the compressor went out. Now that my wife is the primary driver, I have to get the A/C repaired. Many years ago I had a 84 300D that my indy retrofitted and it only lasted 2-3 years before the compressor went out. WTF, is this typical??

edge · #30 06-26-2012, 01:48 PM

Quote:

Originally Posted by buch32

I paid $169.99..free shipping from a top rated ebay seller. It looks super and came with the sealing washers. Is that a good price? Thanks

Thanks for the heads up, buch32, I just ordered a compressor, dryer and expansion valve from them. They've got the compressor price at $155. Although I've done brakes & rotors, ATF filter changes, I've never done A/C work but indy pricing is prohibitive and longevity is questionable in retrofited r134 system so I've got to learn. I'm gonna need help on this, thanks guys.