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 > Tech Help

Reply
 
LinkBack Thread Tools Display Modes
  #1  
Old 09-23-2017, 12:17 PM
Posting since Jan 2000
 
Join Date: Sep 2011
Posts: 5,637
Changing 300E Engine, Pull with Trans?

I need to replace a 300E engine. I have it on the lift with a chain fall above it. Will it be easier to leave the transmission in place or remove it with the engine?

I am about to get started on it, but between family commitments and Harvey disaster relief, it will be a while before I finish.

If you have done this one before, you can probably save me some time experimentig with different approaches.

__________________
2 Thessalonians 3:10
Reply With Quote
  #2  
Old 09-23-2017, 04:15 PM
sixto's Avatar
smoke gets in your eyes
 
Join Date: Jun 2000
Location: SF Bay Area
Posts: 20,794
My problem with pulling both is dealing with both out of the car. Working the bell housing bolts in the car is easier for me than trying to mate engine and transmission out of the car. I don't have a jig to hold the transmission steady out of the car. I can't count on another pair of hands.

Sixto
98 E320s sedan and wagon
Reply With Quote
  #3  
Old 09-23-2017, 05:34 PM
Registered User
 
Join Date: Sep 2001
Posts: 969
I haven't pulled an engine on that car, but many others. Unless you have the equipment to raise and lower the engine and transmission as an assembly on the heavy angle required to get it in and out, I'd leave the transmission installed.
If the car will not have to be moved just block the transmission up in place. If the car will be moved then create a sling and suspend the transmission from strong points on the firewall.
Leaving the transmission in place saves working with the driveshaft, cooler lines, vacuum connection and electrical.
If the front pump seal leaks on the transmission that is the time to change it.
Good luck and keep us posted!!!
__________________
Does a Caddy stretch? No, but a Mercedes bendz.
Reply With Quote
  #4  
Old 09-23-2017, 06:07 PM
Home appliance genius
 
Join Date: Jul 2009
Location: cleveland
Posts: 1,160
I’ve always pulled with trans. It’s nearly impossible to reach all those bell housing bolts with it in. Car needs to be jacked up slightly. Extra set of hands is very helpful but not a requirement if you have a load balancer
__________________
Eugene

10 E63 AMG
93 300te 4matic
07 BMW X3
14 Ford F-150 Fx2
Reply With Quote
  #5  
Old 09-23-2017, 06:32 PM
Posting since Jan 2000
 
Join Date: Sep 2011
Posts: 5,637
In my old shop I had a walking beam. In my new shop the chain fall is in an adjustable, but fixed location above the engine compartment, SO, if I leave the trans in the car I will have to build a sling or other support so I can move the car back to put the replacement engine on the chainfall. I do indeed have a load balancer.

When changing engines in the past I have always preferred to leave the transmission in the car. Sometimes it is necessary to pull it with the engine. I am curious if anyone familiar with the breed indicates that the engine won't fit through the engine compartment with trans still in place. I plan on pulling the radiator.
__________________
2 Thessalonians 3:10
Reply With Quote
  #6  
Old 09-23-2017, 08:11 PM
Home appliance genius
 
Join Date: Jul 2009
Location: cleveland
Posts: 1,160
I’ve pulled 2 x the m103 out of a w124. I think with the radiator out you can possibly slide it forward enough to disengage it from the trans, but it definitely will be close

.... if you can actually get those top bell housing bolts off first.
__________________
Eugene

10 E63 AMG
93 300te 4matic
07 BMW X3
14 Ford F-150 Fx2
Reply With Quote
  #7  
Old 09-23-2017, 08:34 PM
Registered User
 
Join Date: Apr 2002
Location: Dallas Area
Posts: 400
I have done it the past. It's best to pull both together. It's not worth dealing with the hassles of disengaging the torque converter and then pulling the engine.

Once outside, you will have complete access to replace all the seals on the outside of the trans before putting it back in. Most seals/o-rings are are easy to change out.

I have also replaced just the tranny with the engine in the car and getting them aligned was harder than when I had both of them outside. I purchased a transmission jack and that did the trick.
__________________
1986 300E (3/2002) Rear ended and totaled (10/2009)
2000 Xterra (5/2000)
1992 400E (11/2009) -Sold
1986 300E (12/2009) - Sold
2004 E500 Wagon (6/2013) - Sold
Reply With Quote
  #8  
Old 09-23-2017, 09:42 PM
Posting since Jan 2000
 
Join Date: Sep 2011
Posts: 5,637
I have a transmission Jack, but I really don't want to mess with pulling the transmission and THEN pulling the engine, but I will do what I have to do.

I spent a little time on it this afternoon, but it was hot in the shop. I leave in the morning. Won't be back until a week from Monday, so I will get back into it then. Meanwhile thanks for sharing experience and comments. Please keep them coming.
__________________
2 Thessalonians 3:10
Reply With Quote
  #9  
Old 09-25-2017, 08:23 AM
Registered User
 
Join Date: Jan 2008
Location: Melbourne Australia
Posts: 834
IMHO
It's much easier using an engine leveler and pulling both out. Remove radiator.

One time I didn't have a leveler, was operating in a shop with limited ceiling space. Raised the rear up slightly and when angling the engine out, removed the front wheels, supported the front end on a floor jack and lowered the front as close to the ground as possible - just had enough room.

Lying on your back getting the transmission off while everything is still in the car is no fun.
If you have a hoist obviously disconnecting the transmission left in the car is easier.
Reply With Quote
  #10  
Old 09-25-2017, 10:26 AM
Registered User
 
Join Date: Feb 2016
Posts: 43
remove rad and condenser, buy a engine leveler then pull both at same time
Reply With Quote
  #11  
Old 09-25-2017, 10:55 AM
Registered User
 
Join Date: Nov 2010
Location: TX
Posts: 3,721
I have pulled it, better to do it with the transmission, removing those top bolts is not fun. And MB do a fantastic job with wiring too, even with the newer complex cars, its usually just one or two giant plugs. On the 103 its pretty simple itself.

once the radiator and fan is out, lots of room to tilt the powerpack, Just need to raise the car. On a W210 I have pulled out a M112 without the trans as you can literally see and touch the transmission bell bolts from the engine room. To be honest, it would have been better with trans as there is a ton and a half engine room in a W210 with a v6
__________________
2012 BMW X5 (Beef + Granite suspension model)

1995 E300D - The original humming machine (consumed by Flood 2017)
2000 E320 - The evolution (consumed by flood 2017)
Reply With Quote
  #12  
Old 09-25-2017, 03:12 PM
Mighty190's Avatar
Registered User
 
Join Date: Apr 2016
Location: Lafayette Indiana
Posts: 393
If you pull the center part of the "firewall" in front of the blower motor you can access the top transmission bolts
It is a big help when working on the 190. I pulled a w124 engine with the transmission and it sucked
I really do not suggest doing it that way.
__________________
Follow the team at:
http://www.forthesakeof.racing/
https://www.facebook.com/ForTheSakeOfRacing/

Current:
'74 450SLC
'89 190E
'95 E420

Previous:
'94 E320
'87 300E
'73 350SL
'75 450SL
'95 C36
'99 C43 55 swap
Reply With Quote
  #13  
Old 09-25-2017, 08:18 PM
Posting since Jan 2000
 
Join Date: Sep 2011
Posts: 5,637
Even though there are different approaches favored by different people, this is developing into a good thread.

When I get back home I am going to see how hard it is to pull the forward firewall before making up my mind.

I have the car on my two post lift with a chainfall over the engine compartment. I do indeed have a load balancer.

__________________
2 Thessalonians 3:10
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 11:50 AM.


Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2020, 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