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 03-06-2002, 09:59 PM
iodyn
Guest
 
Posts: n/a
Separating intake manifold from head, how much is necessary?

I guess my question is, what is the least I have to unbolt to separate the intake from the head to remove head to change head gasket on an M103?



The CD manual article (on removing and installing intake manifold, replacing gasket) asks you to remove the mixture control unit with air guide housing, remove plastic rail for engine wiring harness, remove start valve, disconnect bowden cable and take off supporting bracket for intake manifold (among other small things too long to mention)?

Is all this necessary? Article never even mentions removing the 5 bolts that run across the manifold -- is this a given? To get to the 3rd bolt you have to remove the start valve -- removing it for any other reason I wouldn't understand why...

TIA for any insight,

JohnB

Reply With Quote
  #2  
Old 03-06-2002, 10:22 PM
Senior Member
 
Join Date: Apr 2001
Location: Baton Rouge
Posts: 485
The easiest way to seperate intake from head, loosen bypass hose, remove cold start injector (replace gasket) , remove hose from idle speed air valve ( be careful) . remove all bolts from intake manifold , last one will be the nut where the cold start injector is. After you remove the nut the intake should loosen easily, it will not move a whole lot maybe 1/2 inch or so. Make sure you time it correctly and remove the pin where the chain runs through the rail before removing head. I always use new head bolts regardless .Make sure you clean headbolt threads in block very well , also apply a small amount of oil to the head bolts upon installation ( these bolts are stretch bolts ). If you are going to use a sealant on the upper cover mating surface I recommend permatex gray. I use it on every timing cover reseal I have done and never had any leaks.Another thing to think about is if you have the head off you might wanna think about resealing lower timing cover while you are that far.
__________________
euro 287
Mercedes Technician 7 Years (retired to Hyundai)
2000 Dodge Durango
98 Mazda truck
Reply With Quote
  #3  
Old 03-06-2002, 10:39 PM
Registered User
 
Join Date: Mar 2001
Posts: 326
A quick scan through my 124 CD revealed that MB wants you to leave the intake on the head when removing. Thats why you didn't see any removal instructions for the intake.
__________________
Scott Diener
89 300E
93 300E
92 Volvo 740 Wagon aka "Mutt mover"
Reply With Quote
  #4  
Old 03-06-2002, 10:42 PM
Senior Member
 
Join Date: Apr 2001
Location: Baton Rouge
Posts: 485
Thats the hard way to do it. Sometimes its best not to go by the book but by experience. Just my 2 cents
__________________
euro 287
Mercedes Technician 7 Years (retired to Hyundai)
2000 Dodge Durango
98 Mazda truck
Reply With Quote
  #5  
Old 03-06-2002, 11:04 PM
dlswnfrd
Guest
 
Posts: n/a
Dynamite and the Intake Manifold

Brother of The Benz,
Do yourself a favor and do as the Shop Manuals suggests!
Remove the cylinder head and intake manifold as a unit.
It' much easier if you just follow the instructions as noted in the manual.
Happy Trails Beep Beep from Donald The Spiderman in Houston!!!
Reply With Quote
  #6  
Old 03-07-2002, 12:00 AM
Member
 
Join Date: Feb 2000
Location: seattle, wa
Posts: 87
do yourself a favor and don't leave the intake on with removal. remove intake bolts, support bracket and bypass and the other small obvious connectors. all you need is a 1/2 inch and it will come out like butter. more importantly make sure you mark the timing advance befor you remove the left cam gear and that it lines up with your marks when putting back together. you can also save a little time by putting a wedge where the tensioner guide is so it won't ratchet foward. then you don't need to remove air pump to reset it...good luck ....Paul
Reply With Quote
  #7  
Old 03-07-2002, 12:03 AM
iodyn
Guest
 
Posts: n/a
Thanks for the prompt replies..

So in essence the shop manual wants the head and intake off together, then taken apart once off for machine shop purposes? I'd rather go from 1-3 rather than 1-2-3, if at all possible.

One other question please... is their a trick to pulling off the fan clutch pulley after removing the fan clutch? I removed the 4 bolts on its face and thought it would jimmy off after that, but no luck. Need to remove it to reseal the timing chain cover as euro 287 suggested.

Thanks again!

JohnB
Reply With Quote
  #8  
Old 03-07-2002, 01:30 PM
Registered User
 
Join Date: Jun 2001
Location: California
Posts: 327
iodyn:

I've had the fan clutch pulley off of my 103 before and there was no trick. It might be stuck on the centering hub. Once you get it off, you might scrub the surfaces with some 600 grit or a small wire brush and put some grease on it for next time.

Can you wobble it at all and work it off? Worst case, if you start beating on it and damage the bearing, the bracket/bearing is about $100.
__________________
D.H.

04 ML500
02 E430

Experience is something you don't get until just after you need it.
Reply With Quote
  #9  
Old 03-07-2002, 03:25 PM
dlswnfrd
Guest
 
Posts: n/a
If The Shoe Fits

Brother of the Benz,
No two mechanics work the same.
If one feels comfortable going from 1-3-2 or 1-2-3 the end will be the same.
Do as you wish and the job will be as good as the other persons technique.
Enjoy in what you are doing in whatever fashion it may be!
Happy Trails Beep Beep from The Spiderman in Houston!!!

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


Similar Threads
Thread Thread Starter Forum Replies Last Post
Oil In The Manifold Intake Of 190e, 2.6l.1988 MARIO FARIAS Diesel Discussion 4 12-22-2003 01:03 PM
126 Intake Manifold Leak Theurig Tech Help 0 12-12-2003 10:09 PM
M103 - Intake manifold BlackBeauty Mercedes-Benz Performance Paddock 2 12-10-2003 09:18 PM
Oil build up on intake manifold end tube?? ronald_m Tech Help 0 10-18-2002 05:35 PM
Replacing glow plugs without removing intake manifold and crossover pipe? airfoill Diesel Discussion 13 03-14-2002 06:46 AM



All times are GMT -4. The time now is 10:51 AM.


Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2024, vBulletin Solutions, Inc.
Search Engine Optimization by vBSEO 3.6.0
Copyright 2024 Pelican Parts, LLC - Posts may be archived for display on the Peach Parts or Pelican Parts Website -    DMCA Registered Agent Contact Page