Parts Catalog Accessories Catalog How To Articles Tech Forums
Call Pelican Parts at 888-280-7799
Shopping Cart Cart | Project List | Order Status | Help



Go Back   PeachParts Mercedes-Benz Forum > Mercedes-Benz Tech Information and Support > Diesel Discussion

Reply
 
LinkBack Thread Tools Display Modes
  #31  
Old 07-16-2012, 09:35 PM
Graplr's Avatar
Registered User
 
Join Date: Apr 2007
Location: Huntington Beach, CA
Posts: 1,602
Did they flush the old oil out? If not and then they put 8 ozs in it probably does have too much oil in. 8 ozs is what most people put in after a complete flush of the system. Some even put less in.

__________________
2009 ML320 Bluetec

Past Mercedes
1979 300TD
1982 300TD
2000 E320 4Matic Wagon
1998 E430
1984 300SD
1980 300SD
Reply With Quote
  #32  
Old 07-17-2012, 10:35 AM
edge's Avatar
Registered User
 
Join Date: May 2001
Location: CT
Posts: 1,398
Quote:
Originally Posted by Graplr View Post
Did they flush the old oil out? If not and then they put 8 ozs in it probably does have too much oil in. 8 ozs is what most people put in after a complete flush of the system. Some even put less in.

Yes, they flushed out all the old oil. Took it back to the shop this morning when the ambient was 79 degrees. The low side showed 42 psi. The mechanic said I can't expect the A/C to perform well until I complete the system and get the A/C temp switch in so that the aux fan will kick in with the higher temps we have been having. I finally got the A/C temperature switch ($58 wholesale, no tax at the dealer) so we'll see if it operates better as it has been unusually hot. Today it suppose to be 95 here in CT today. Envirosafe called me back this morning. The 3rd tech tells me that the R4 compressor should get 4 oz. of oil after flushing. WTH? He also suggest that I switch to the industrial strength ES (which is charged with vacuum) because the 300D needs all the help it can get. My indy charged the regular ES with 0 vacuum. I'm going to give it a few days of running and reevaluate.
__________________
85 300CD Signal Red/Tan sold
83 300D Manganese Brown 109K
97 E420 Midnight Blue 197K sold
98 BMW 328i Vert White 100K, sold
95 BMW 525i White 125K, sold
93 BMW 525iT Red 193K, sold
95 E320 Green Wagon 125K, sold
94 E320 White 127K, sold
85 300SD 156K Grey (Annie), sold
84 300D Lapis Blue 170K (Judy), sold
99 ML 320 Black (lease), 1998 C230 White (lease)
00 Honda S2000 Red (lease)
86 Mercedes 300E (sold)
84 Porsche 911 Red (sold), 1965 Porsche 911 White (sold)
Reply With Quote
  #33  
Old 07-17-2012, 11:15 AM
TX76513's Avatar
Platinum Member
 
Join Date: Apr 2003
Location: Brandon, Mississippi
Posts: 5,202
Quote:
Originally Posted by edge View Post
Does anyone know the guidelines of how much PAG oil to put in a new R4 compressor? The shop put in 8 oz. I talked to Envirosafe and they said one possibility is that there is too much oil in the system. Anybody?
I tried to upload the document, guess its to large HERE is the link.

Looks like it is overfilled.
__________________
BENZ THERE DONE THAThttp://www.peachparts.com/shopforum/...c/progress.gif
15 VW Passat TDI
00 E420
98 E300 DT
97 E420 Donor Car - NEED PARTS? PM ME!
97 S500
97 E300D
86 Holden Jackaroo Turbo D
86 300SDL
(o\|/o)
Reply With Quote
  #34  
Old 07-17-2012, 11:37 AM
funola's Avatar
Registered User
 
Join Date: May 2005
Location: NYC
Posts: 8,243
Quote:
Originally Posted by edge View Post
So I had a shop redo my A/C and I supplied him with a new R4 compressor, drier, expansion valve, pag oil and 2-6 oz. cans of Envirosafe and told him after vacuuming the system to charge the Envirosafe at 0 vacuum pressure as instructed by their websire. The only thing was waiting for the temperature switch being ordered as the old one broke off the old dryer. Now my operation pressure is 45 on the low side and 225 on the high side but my system is not that cool. It is 90 and muggy out. What is wrong with this picture? Thoughts?
No temp switch= no aux fan. aux fan is needed to remove heat from the system. Why did you bring them incomplete parts and have them start the job?

A temp switch should not cost more than $15 online.
__________________
85 300D turbo pristine w 157k when purchased 161K now
83 300 D turbo 297K runs great. SOLD!
83 240D 4 spd manual- parted out then junked
Reply With Quote
  #35  
Old 07-17-2012, 12:09 PM
edge's Avatar
Registered User
 
Join Date: May 2001
Location: CT
Posts: 1,398
Quote:
Originally Posted by funola View Post
No temp switch= no aux fan. aux fan is needed to remove heat from the system. Why did you bring them incomplete parts and have them start the job?

A temp switch should not cost more than $15 online.
I didn't, the temp switch broke off when he tried to remove it from the old dryer. As it was late Friday afternoon and MB dealer didn't have in stock so had to order it. Try telling your wife to wait a few more days for web delivery when it's 95 and humid out! Especially after we sold her 97 E420 which had ice cold A/C with 198K miles. Peace is sometimes costly...
Reply With Quote
  #36  
Old 07-17-2012, 12:30 PM
edge's Avatar
Registered User
 
Join Date: May 2001
Location: CT
Posts: 1,398
Quote:
Originally Posted by TX76513 View Post
I tried to upload the document, guess its to large HERE is the link.

Looks like it is overfilled.
Your link says:

GM R4: Drain and measure oil. Replace with the same amount of new oil + 1 oz. (3 oz. maximum). Add 1 oz. for drier.

From Yak's DIY Compressorworks R4 writeup: "The FSM section 83-520 has specific quantities to add depending on what you’re doing and how much oil you’ve removed. The compressor re-install section, 83-522, says a total capacity of 170 cc, or 5.75 ounces."

So I gather the recommended range is 4- 5.75 oz. which puts me at 2 1/4- 4 oz. (shop added 8 oz.) too much oil less what spilled when he put the compressor in. When I attach the manifold to the high pressure valve, oil does squirt out. I may have to squirt some oil out to get the pressure down and recharge one 6 oz. can. You can search forever and not find any definitive answer to the oil capacity for the R4 compressor, thanks.
Reply With Quote
  #37  
Old 07-17-2012, 02:30 PM
vstech's Avatar
DD MOD, HVAC,MCP,Mac,GMAC
 
Join Date: Mar 2006
Location: Mount Holly, NC
Posts: 26,471
the reason you cannot find the R4 capacity of oil is there is no capacity... just flow of oil through it.
there is no sump.
the R4 changeout on a new compressor takes between 2 and 5 oz of oil.
on a flushed system and a new compressor and dryer, 8oz is ok, but it must be distributed through the system somewhat. most will go in the dryer, and the condenser. only a little goes in the compressor, as it will spill out when you install it in an MB...
if your system was operating fine, and the compressor is all that was removed, and the shop put in 8 oz of oil... you need to pull the compressor, and the dryer, flush out the evaporator, and the condenser and the lines, and recharge with 6 oz of oil in the new dryer, and condenser, then recharge with your refrigerant...
I cannot fathom charging a system with atmosphere in the lines...
__________________
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!
Reply With Quote
  #38  
Old 07-17-2012, 03:07 PM
edge's Avatar
Registered User
 
Join Date: May 2001
Location: CT
Posts: 1,398
Quote:
Originally Posted by vstech View Post
the reason you cannot find the R4 capacity of oil is there is no capacity... just flow of oil through it.
there is no sump.
the R4 changeout on a new compressor takes between 2 and 5 oz of oil.
on a flushed system and a new compressor and dryer, 8oz is ok, but it must be distributed through the system somewhat. most will go in the dryer, and the condenser. only a little goes in the compressor, as it will spill out when you install it in an MB...
if your system was operating fine, and the compressor is all that was removed, and the shop put in 8 oz of oil... you need to pull the compressor, and the dryer, flush out the evaporator, and the condenser and the lines, and recharge with 6 oz of oil in the new dryer, and condenser, then recharge with your refrigerant...
I cannot fathom charging a system with atmosphere in the lines...
The compressor seized 2 or so years ago. We didn't fixed because we had the ice cold A/C in the 97 E420. The shop flushed out the system, replaced the drier, expansion valve and compressor and added 8oz. of PAG oil. He charged at 0 vacuum as per Envirosafe's instructions. I replaced the A/C temp switch and the aux fan is working. I may just recharge under vacuum. As it is, it's like not having A/C after spending $400 labor + $260 for parts. The only question is getting the oil from 8 oz to 4-6 oz....and it's freakin' hot out.
Reply With Quote
  #39  
Old 07-17-2012, 06:59 PM
vstech's Avatar
DD MOD, HVAC,MCP,Mac,GMAC
 
Join Date: Mar 2006
Location: Mount Holly, NC
Posts: 26,471
no need to worry about the oil, 8 oz on a flushed system is perfect.

just have them vent the ES, and evacuate the system and charge with the correct amount of ES under vacuum. you'll be fine.

it's best to have them give the car a hard vacuum of at least 30 minutes on the pump to remove any water from the lines due to the air in the lines.
__________________
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!
Reply With Quote
  #40  
Old 07-27-2012, 03:47 PM
edge's Avatar
Registered User
 
Join Date: May 2001
Location: CT
Posts: 1,398
Recap: Turns out there was a leak at the compressor O rings. As there are no instructions, indy used the yellow washer on the high side and red on the low side. It was leaking at the yellow washer. Although it held vacuum, it leaked out a week later under pressured on the yellow, high side. So he used the green on the low and the red on the high side (thinking red= high pressure). His boss wanted to charge me a half hour labor but I refused as it leaked out. As it is, I have to get 2 more cans of ES-12a.

So I'm getting 64 degrees at the middle vents (I rigged it open for A/C) in 90 ambient temp. Wife is happy, peace at last at home.
__________________
85 300CD Signal Red/Tan sold
83 300D Manganese Brown 109K
97 E420 Midnight Blue 197K sold
98 BMW 328i Vert White 100K, sold
95 BMW 525i White 125K, sold
93 BMW 525iT Red 193K, sold
95 E320 Green Wagon 125K, sold
94 E320 White 127K, sold
85 300SD 156K Grey (Annie), sold
84 300D Lapis Blue 170K (Judy), sold
99 ML 320 Black (lease), 1998 C230 White (lease)
00 Honda S2000 Red (lease)
86 Mercedes 300E (sold)
84 Porsche 911 Red (sold), 1965 Porsche 911 White (sold)
Reply With Quote
  #41  
Old 07-27-2012, 03:54 PM
JamesDean's Avatar
Electrical Engineer
 
Join Date: Apr 2005
Location: NE Ohio
Posts: 5,038
64 degrees seems a bit high for 90F outside.

In my 190E it'll get into the high 30-40s (ES-12a)

My dad's 300SD (Es-12A) gets low 50s..

Unless you're talking about vents temps with the engine at idle..
__________________
Cruise Control not working? Send me PM or email (jamesdean59@gmail.com). I might be able to help out.
Check here for compatibility, diagnostics, and availability!

(4/11/2020: Hi Everyone! I am still taking orders and replying to emails/PMs/etc, I appreciate your patience in these crazy times. Stay safe and healthy!)


82 300SD 145k
89 420SEL 210k
89 560SEL 118k
90 300SE 262k RIP 5/25/2010
90 560SEL 154k
91 300D 2.5 Turbo. 241k
93 190E 3.0 235k
93 300E 195k
Reply With Quote
  #42  
Old 07-27-2012, 06:45 PM
Registered User
 
Join Date: Jul 2008
Location: virginia
Posts: 496
yes 64 is a bit high. even with max fan on a hot day I get upper 30's, unless idling in traffic. Are measuring at idle ?
__________________
1977 240D turbo
Reply With Quote
  #43  
Old 07-27-2012, 08:27 PM
JamesDean's Avatar
Electrical Engineer
 
Join Date: Apr 2005
Location: NE Ohio
Posts: 5,038
Quote:
Originally Posted by 47dodge View Post
yes 64 is a bit high. even with max fan on a hot day I get upper 30's, unless idling in traffic. Are measuring at idle ?
These past few weeks have seen 85-95F up here. Only at a stop does my cooling system fail me, but once on the road above 2k rpm its nice and cold, I would guess 30-40s easily.
__________________
Cruise Control not working? Send me PM or email (jamesdean59@gmail.com). I might be able to help out.
Check here for compatibility, diagnostics, and availability!

(4/11/2020: Hi Everyone! I am still taking orders and replying to emails/PMs/etc, I appreciate your patience in these crazy times. Stay safe and healthy!)


82 300SD 145k
89 420SEL 210k
89 560SEL 118k
90 300SE 262k RIP 5/25/2010
90 560SEL 154k
91 300D 2.5 Turbo. 241k
93 190E 3.0 235k
93 300E 195k
Reply With Quote
  #44  
Old 07-30-2012, 07:33 PM
edge's Avatar
Registered User
 
Join Date: May 2001
Location: CT
Posts: 1,398
42 degrees at 77 ambient. Maybe I am overcharged. I will have to check.

Reply With Quote
Reply

Bookmarks

Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is On
Trackbacks are On
Pingbacks are On
Refbacks are On




All times are GMT -4. The time now is 04:05 AM.


Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2022, vBulletin Solutions, Inc.
Search Engine Optimization by vBSEO 3.6.0
Copyright 2018 Pelican Parts, LLC - Posts may be archived for display on the Peach Parts or Pelican Parts Website -    DMCA Registered Agent Contact Page