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
  #1  
Old 11-21-2017, 08:05 PM
Registered User
 
Join Date: Nov 2017
Location: Dallas, Txas
Posts: 63
Advice for replacing freeze plug behind injector pump (W123)

I've been working on a 85 300D that sat for a decade for the last 3 months. When I bought it, I quickly discovered a freeze plug had come off under the turbo. I took the turbo and both manifolds off the car and cleaned all of it up and replace all the freeze plugs on that side.

Today I was doing final assembly and was excited to finally see the car run when I had a major setback.

I was flushing the cooling system in preparation for new coolant, when to my horror, I discovered the freeze plug behind the injection pump had also come off.

I see no other way to replace this thing without taking off the injection pump and oil filter housing.... which also means buying all new seals and gaskets... which means the car will be in my garage for the foreseeable future.

Any suggestions on the best way to proceed?

Here are some photos of my turbo and manifold restore that I am finishing up

Attached Thumbnails
Advice for replacing freeze plug behind injector pump-img_6211.jpg   Advice for replacing freeze plug behind injector pump-img_6230.jpg  

Last edited by michael_j_brown; 11-21-2017 at 08:19 PM.
Reply With Quote
  #2  
Old 11-21-2017, 09:21 PM
eatont9999's Avatar
Registered User
 
Join Date: Jan 2012
Location: Dallas, TX
Posts: 1,948
That's what I would do. Take both of those items off, do all the plugs on that side and reseal the IP and oil filter housing. Eventually, one or both of them will leak on you, so might as well replace the gaskets with MB gaskets while you are in there. Also a good time to R&R the oil cooler lines. Looks like you are in Dallas, so look up a place called Hose Fast I had them rebuild a set for one of my cars a few years ago. I think it was about $60 out the door.
__________________
1991 F250 super-cab 7.3 IDI. (rebuilt by me) Banks Sidewinder turbo, hydroboost brakes, new IP and injectors.
2003 S430 - 107K
1983 300SD - Tanoshii - mostly restored ~400K+.
1983 300SD - Good interior. Engine finally tamed ~250K.
Monark Nozzle Install Video - http://tinyurl.com/ptd2tge
Reply With Quote
  #3  
Old 11-21-2017, 10:10 PM
Diesel911's Avatar
Registered User
 
Join Date: Sep 2007
Location: Long Beach,CA
Posts: 39,756
There is a tool that has an angled steel rod with a disc mounted on a ball and socket swivel that is used for installing Core/Freeze plugs. It allows you go get around some obstructions.

I have never used one so I don't know if it would be suitable in your case.
Attached Thumbnails
Advice for replacing freeze plug behind injector pump-core-freeze-plug-tool-2017.jpg  
__________________
84 300D, 82 Volvo 244Gl Diesel
Reply With Quote
  #4  
Old 11-22-2017, 10:47 AM
Registered User
 
Join Date: Nov 2017
Location: Dallas, Txas
Posts: 63
Thanks everyone for the input
Reply With Quote
  #5  
Old 11-22-2017, 11:06 AM
Shadetree
 
Join Date: Jan 2010
Location: Back in SC upstate
Posts: 1,742
Was there any antifreeze in the engine?

__________________
84 300SD
85 380SE
83 528e
95 318ic
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 11:59 PM.


Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2021, 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