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 07-23-2019, 11:36 PM
Registered User
 
Join Date: Jul 2019
Location: San Jose CA.
Posts: 16
M276 W166 Cam Timing

I am completing the right timing chain tensioner replacement on my 2014 ML350. I would like to ensure that the chain hasn't jumped a tooth.
Can anyone tell me if the cam position in the pictures is correct?
Crank set to 40 when viewed from directly above.

I have a tool to check the cams from under the valve covers but I sure would prefer to avoid removing the valve cover.

Thanks for your time,

Alex

Attached Thumbnails
M276 W166 Cam Timing-r-cams-40-degrees.jpg   M276 W166 Cam Timing-r-cams-tdc-40-degrees.jpg  
Reply With Quote
  #2  
Old 07-24-2019, 06:43 AM
Registered User
 
Join Date: Jan 2012
Posts: 7,534
The cam marks might not mean much. Many engines use non keyed cam / crank wheels and the cam locking tools are used to set the valve timing. This is way faster in the factory then lining things up and offers exact cam timing.
Reply With Quote
  #3  
Old 07-24-2019, 10:09 AM
Registered User
 
Join Date: Jul 2019
Location: San Jose CA.
Posts: 16
Thanks for the note 97. Seems like I'm going to learn to use the timing tool set.

Alex
Reply With Quote
  #4  
Old 07-25-2019, 09:15 AM
Registered User
 
Join Date: Feb 2007
Location: los angeles
Posts: 814
The only way to know is remove the valve cover to verify Hash mark lazer mark at cam is level withe the head, did you move gears when doing tensioner?,they dont move when doing the tensioner,s
Reply With Quote
  #5  
Old 07-25-2019, 07:36 PM
Registered User
 
Join Date: Jul 2019
Location: San Jose CA.
Posts: 16
Hi Nulu,
Yes I moved the crank while the tensioner was out. I had the crank set 1 rev off and couldn't move the silver arm enough to install the new tensioner.
I have rotated the engine by hand and there is no binding (yet).
Removing the valve cover seems straight forward... except for the attachments on the rear of the cover.
Intake manifold is removed.
Disconnect the fuel manifold at the 19mm collar nut
Remove ignition coils
Disconnect all electrical connectors.
Remove all screws from top of cover.
Remove screws from front of chain cover.

Looks like (at least) 2 screws attaching a round shaped component at the rear of the cover between the cover and the firewall. I don't know if that component will come along with the valve cover, or should the component(s) be removed before attempting to remove the valve cover?

Thanks for you time and knowledge.

Alex

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 12:54 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