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 ShopForum > Technical Information and Support > Diesel Discussion

Reply
 
LinkBack Thread Tools Display Modes
  #1  
Old 04-02-2011, 08:49 PM
netboy's Avatar
Registered User
 
Join Date: May 2010
Location: Maryville TN
Posts: 194
To flush or not to flush........

Recently purchased an 83 300D with a bad tranny. Checked the pan for metal, checked modulator press and vacuum. 3rd gear flairs to the point its gone. After a few test drives, I dropped the again pan to change the valve body and found the pan full of metal flakes and chunks. I have another tranny from an 81 300SD but I could not obtain the torque converter because the engine was locked up.
I have read on the forum that it is bad to flush a transmission system due to inducing problems. Has anyone successfully flushed a transmission cooler, lines, and torque converter without trashing the next tranny? Can you flush a torque converter and reuse it?
__________________

I LOVE CATS....AND FRIES

1981 300sd
1983 300sd
1985 300d
1983 300cd
1991 350sdl
Reply With Quote
  #2  
Old 04-02-2011, 08:59 PM
layback40's Avatar
Not Banned
 
Join Date: Nov 2009
Location: Victoria Australia - down under!!
Posts: 4,023
Quote:
Originally Posted by netboy View Post
Recently purchased an 83 300D with a bad tranny. Checked the pan for metal, checked modulator press and vacuum. 3rd gear flairs to the point its gone. After a few test drives, I dropped the again pan to change the valve body and found the pan full of metal flakes and chunks. I have another tranny from an 81 300SD but I could not obtain the torque converter because the engine was locked up.
I have read on the forum that it is bad to flush a transmission system due to inducing problems. Has anyone successfully flushed a transmission cooler, lines, and torque converter without trashing the next tranny? Can you flush a torque converter and reuse it?
You definitely should flush the TC & cooler & hope that they are good.
You may (should) replace the front seal on the trans as the TC may not lign up on the seal the same.
__________________
Grumpy Old Diesel Owners Club group

I no longer question authority, I annoy authority. More effect, less effort....

1967 230-6 auto parts car. rust bucket.
1980 300D now parts car 800k miles
1984 300D 500k miles
1987 250td 160k miles English import
2001 jeep turbo diesel 130k miles
1998 jeep tdi ~ followed me home. Needs a turbo.
1968 Ford F750 truck. 6-354 diesel conversion.
Other toys ~J.D.,Cat & GM ~ mainly earth moving
Reply With Quote
  #3  
Old 04-02-2011, 09:00 PM
Registered User
 
Join Date: Sep 2001
Location: central Texas
Posts: 17,023
Quote:
Originally Posted by netboy View Post
I have read on the forum that it is bad to flush a transmission system due to inducing problems. Has anyone successfully flushed a transmission cooler, lines, and torque converter without trashing the next tranny? Can you flush a torque converter and reuse it?
That is an old wives tale and we have thoroughly debunked that Magic fluid inside it theory...

If you can do a good flush you should be able to use it...
Reply With Quote
  #4  
Old 04-02-2011, 11:36 PM
JHZR2's Avatar
Registered User
 
Join Date: Jan 2002
Location: Collingswood, NJ
Posts: 3,421
Quote:
Originally Posted by leathermang View Post
That is an old wives tale and we have thoroughly debunked that Magic fluid inside it theory...

If you can do a good flush you should be able to use it...
Agree. Nothing bad about doing a flush. All good. The bad is having a mimimum wage monkey without a clue doing stuff to sell products and not what is technically sound.

I would definitely flush my radiator cooler, lines and the TC thuroughly. Id buy a few gallons of ATF and an electric pump to flush everything. No big deal...

Id also buy a magnefine or equivalent and put it inline to protect further...
__________________
Own:
1981 240D (73K)
1982 300CD (162k)
1998 Chevrolet S-10 ZR2 (62K)
2011 BMW 135i cv (14k)
2014 Honda Odyssey (6k)
2015 Honda Accord Hybrid (5k)
Had:
2008 VW Rabbit (70k)
2004 SAAB 9-3 (83k)
1991 BMW 318i (183K)
1983 300D (228K) (wrecked by at-fault uninsured driver)
1985 300D (233K) (now in FL)
1994 Acura Integra (188k) (Rusted out)
1992 Toyota 4Runner (72k) (Rusted out)
1990 Daihatsu Rocky (??) (No parts)
Reply With Quote
  #5  
Old 04-02-2011, 11:49 PM
Registered User
 
Join Date: Sep 2001
Location: central Texas
Posts: 17,023
LOL, minimum wage monkeys are bad for EveryThing. For the effort you must expend to watch them ( for your stuff's protection ) you can do it yourself with much more pleasure and security....
Reply With Quote
  #6  
Old 04-02-2011, 11:51 PM
is thinning the herd
 
Join Date: Mar 2010
Location: Columbus, Ohio
Posts: 3,202
Its sad, I saw this thread title on the homepage and thought it was about wheels. Ugh, a sign of the times.
__________________
Current: 68 280SL, 70 300SEL 3.5, 72 350SL, 72 220, 87 300D, 87 200TD Euro, 90 190E 2.0 Euro, 06 E320 CDI, 72 220D, 72 280SEL 4.5

Ford F250 PSD / Nissan GTR / Celica GTFour / Dodge Dakota / Land Cruiser Diesel / Toyota Soarer GTT / Skyline GTS / Rover Mini

40+ previous Benz's
Reply With Quote
  #7  
Old 04-03-2011, 12:23 AM
whunter's Avatar
Moderator
 
Join Date: Dec 2003
Location: Metro Detroit, Michigan
Posts: 17,340
FYI

Quote:
Originally Posted by netboy View Post
Recently purchased an 83 300D with a bad tranny.
Checked the pan for metal, checked modulator press and vacuum.
3rd gear flairs to the point its gone.
After a few test drives, I dropped the again pan to change the valve body and found the pan full of metal flakes and chunks.
I have another tranny from an 81 300SD but I could not obtain the torque converter because the engine was locked up.
The 300SD has an electronic speedometer..


.
__________________
ASE Master Mechanic
asemastermechanic@juno.com

Prototype R&D/testing:
Thermal & Aerodynamic System Engineering (TASE) vehicle instrumentation technician.
Noise Vibration and Harshness (NVH).
Dynamometer.
Heat exchanger durability.
HV-A/C Climate Control.
Prototype Vehicle build.
Prototype Fleet Durability
Prototype vehicle instrumentation.
Technical Quality Auditor.
Automotive Technical Writer

1973 300D
1973 309D - stolen
1978 280SE
1980 240D
1983 300D
1984 190D
Reply With Quote
  #8  
Old 04-04-2011, 09:44 PM
netboy's Avatar
Registered User
 
Join Date: May 2010
Location: Maryville TN
Posts: 194
yeah, I knew the speedos were different, but I can swap the backends of the tranny for a mechanical speedo drive from the original, right?
what is a magnefine,who sells them and where does it go, in the pan?
__________________

I LOVE CATS....AND FRIES

1981 300sd
1983 300sd
1985 300d
1983 300cd
1991 350sdl
Reply With Quote
  #9  
Old 04-04-2011, 10:46 PM
vstech's Avatar
DD MOD, HVAC,MCP,Mac,GMAC
 
Join Date: Mar 2006
Location: Mount Holly, NC
Posts: 25,751
A magnefine (basically a magnet in the drain plug, or stuck to the bottom of the pan) won't do much, as most of the metal in the transmission is aluminum. the clutch wear plates are of course steel, as is the TC...
__________________
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
  #10  
Old 04-05-2011, 01:38 PM
Registered User
 
Join Date: Sep 2001
Location: central Texas
Posts: 17,023
Quote:
Originally Posted by vstech View Post
A magnefine (basically a magnet in the drain plug, or stuck to the bottom of the pan) won't do much, as most of the metal in the transmission is aluminum. the clutch wear plates are of course steel, as is the TC...
This gave me an idea concerning the thread about the guy with the #12 vacuum pump bearing possibly wandering around the bottom of the engine oil pan and rubbing against the oil pump pickup screen... finally wearing through and trashing the oil pump and the engine if not turned off quick enough after that collision..
A big magnet... if positioned correctly under the oil pickup screen might keep that ( hopefully and assumed magnetically attracted ) bearing against the bottom of the pan and not let it penetrate the oil pickup screen (?).
We need someone with their pan off to post the dimensions needed to accurately position that magnet on the bottom of the pan. Perhaps even without having a vacuum pump give way on that type engine.... just in case...
But I can not find that thread again... LOL... John , can you help ?
Reply With Quote
  #11  
Old 04-05-2011, 02:16 PM
JHZR2's Avatar
Registered User
 
Join Date: Jan 2002
Location: Collingswood, NJ
Posts: 3,421
Quote:
Originally Posted by vstech View Post
A magnefine (basically a magnet in the drain plug, or stuck to the bottom of the pan) won't do much, as most of the metal in the transmission is aluminum. the clutch wear plates are of course steel, as is the TC...
Magnefine is a brand of inline filters, not just a magnet in the sump.
__________________
Own:
1981 240D (73K)
1982 300CD (162k)
1998 Chevrolet S-10 ZR2 (62K)
2011 BMW 135i cv (14k)
2014 Honda Odyssey (6k)
2015 Honda Accord Hybrid (5k)
Had:
2008 VW Rabbit (70k)
2004 SAAB 9-3 (83k)
1991 BMW 318i (183K)
1983 300D (228K) (wrecked by at-fault uninsured driver)
1985 300D (233K) (now in FL)
1994 Acura Integra (188k) (Rusted out)
1992 Toyota 4Runner (72k) (Rusted out)
1990 Daihatsu Rocky (??) (No parts)
Reply With Quote
  #12  
Old 04-05-2011, 06:34 PM
netboy's Avatar
Registered User
 
Join Date: May 2010
Location: Maryville TN
Posts: 194
That sounds like a good idea, considering the alternative. I assume its slaved in just prior to the cooler. On a 722.3 which side line is the supply and which is return to the tranny?
Is there any trick to swapping the aft end of the trannies...?
__________________

I LOVE CATS....AND FRIES

1981 300sd
1983 300sd
1985 300d
1983 300cd
1991 350sdl
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 06:09 AM.


Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2017, vBulletin Solutions, Inc.
Search Engine Optimization by vBSEO 3.6.0
Copyright 2011 Pelican Parts - Posts may be archived for display on the Peach Parts or Pelican Parts Website -    DMCA Registered Agent Contact Page