SPONSORED LINKS

How to replace timing belt tensioner and phasers

Tiny
NASER NASER
  • MEMBER
  • 2013 MERCEDES BENZ C250
  • 4 CYL
  • 2WD
  • AUTOMATIC
  • 150,000 MILES
Replacing the phasers on the car listed above. Where is the tensioner and how to replace it? Does the tensioner need to be loosened first before replacing the phasers?
Tuesday, September 3rd, 2019 AT 1:17 PM

42 Replies

Tiny
JACOBANDNICKOLAS
  • MECHANIC
  • 109,747 POSTS
Welcome to 2CarPros.

Here are the directions for the chain tensioner:

2013 Mercedes Benz C 250 Sedan (204.047) L4-1.8L Turbo (271.860)
AR05.10-P-7800EVO Remove/Install Chain Tensioner
Vehicle Engine, Cooling and Exhaust Engine Timing Components Timing Chain Tensioner Service and Repair Removal and Replacement AR05.10-P-7800EVO Remove/Install Chain Tensioner
AR05.10-P-7800EVO REMOVE/INSTALL CHAIN TENSIONER
AR05.10-P-7800EVO Remove/Install Chain Tensioner
Engines 271.8 in Model 172, 204, 207, 212

All directions are in the attached pictures. Let me know if this helps.

Take care,
Joe
Images (Click to make bigger)
Thumb
Thumb
Thumb
Thumb
Thumb
SPONSORED LINKS
Was this
answer
helpful?
Yes
No
+1
Tuesday, September 3rd, 2019 AT 8:47 PM
Tiny
NASER NASER
  • MEMBER
  • 836 POSTS
I knew it, stupid Benz placing it under the alternator. Thanks sir.
Was this
answer
helpful?
Yes
No
+2
Wednesday, September 4th, 2019 AT 5:04 AM
Tiny
JACOBANDNICKOLAS
  • MECHANIC
  • 109,747 POSTS
LOL. Anything to make things a bit more difficult. You are very welcome. Let me know if you have other questions.

Take care,
Joe
Was this
answer
helpful?
Yes
No
-1
Wednesday, September 4th, 2019 AT 6:19 PM
Tiny
NASER NASER
  • MEMBER
  • 836 POSTS
Any way for you to access some resources to find out how many bolts hold the alternator in place?
Was this
answer
helpful?
Yes
No
Thursday, September 5th, 2019 AT 5:52 AM
Tiny
NASER NASER
  • MEMBER
  • 836 POSTS
I got it, just need the new phasers torque spec and tensioner as well.
SPONSORED LINKS
Was this
answer
helpful?
Yes
No
+1
Thursday, September 5th, 2019 AT 7:44 AM
Tiny
JACOBANDNICKOLAS
  • MECHANIC
  • 109,747 POSTS
Welcome back:

I attached a picture of the alternator. It shows two. See picture 1. Also, picture 2 is what I believe you are looking for as far as torque.

Let me know if this helps or if you have other questions.

Take care,
Joe
Images (Click to make bigger)
Thumb
Thumb
Was this
answer
helpful?
Yes
No
Thursday, September 5th, 2019 AT 7:21 PM
Tiny
NASER NASER
  • MEMBER
  • 836 POSTS
How do I know if what I have is engine 271.8 or 271.9? As the torque specs you provided clearly show there are two different ones. Thanks
Was this
answer
helpful?
Yes
No
Sunday, September 8th, 2019 AT 8:03 AM
Tiny
JACOBANDNICKOLAS
  • MECHANIC
  • 109,747 POSTS
Welcome back:

From research, you should have the 271.8. This model had a turbo charger whereas the 271.9 had a supercharger.
Was this
answer
helpful?
Yes
No
Sunday, September 8th, 2019 AT 6:33 PM
Tiny
NASER NASER
  • MEMBER
  • 836 POSTS
Excellent, I thought so but drove me crazy the information was so vague. Thanks for your help!
Was this
answer
helpful?
Yes
No
Sunday, September 8th, 2019 AT 6:36 PM
Tiny
JACOBANDNICKOLAS
  • MECHANIC
  • 109,747 POSTS
Happy to help. Keep me in the loop as to how everything turns out for you.

Take care,
Joe
Was this
answer
helpful?
Yes
No
Sunday, September 8th, 2019 AT 6:40 PM
Tiny
NASER NASER
  • MEMBER
  • 836 POSTS
Having a problem with the camshafts, not able to place both phasers, when I put one on and put the chain on top of it and about to put the second the chain is too short to be able to let the phaser go on the camshaft, and even with the camshaft holder, they camshaft moves a little, and am not able to turn the camshaft to light up 100% with the phaser, I may end up just removing the whole chain and replacing it, is it easier if the whole chain replaced as well as the guides to give more room for the chain to be placed?
Was this
answer
helpful?
Yes
No
Thursday, September 12th, 2019 AT 6:20 AM
Tiny
NASER NASER
  • MEMBER
  • 836 POSTS
If I could find the right camshaft wrench which I can turn the camshaft just a bit I could do it, but can't find any size that fits exactly behind the sprocket.
SPONSORED LINKS
Was this
answer
helpful?
Yes
No
Thursday, September 12th, 2019 AT 6:28 AM
Tiny
JACOBANDNICKOLAS
  • MECHANIC
  • 109,747 POSTS
Welcome back:

You need to release tension from the chain. Have you removed the tensioning rail? See pic 1
Image (Click to make bigger)
Thumb
Was this
answer
helpful?
Yes
No
Thursday, September 12th, 2019 AT 5:58 PM
Tiny
NASER NASER
  • MEMBER
  • 836 POSTS
If you mean number 4 in the picture then yes, the plastic piece, I removed it.
Was this
answer
helpful?
Yes
No
Thursday, September 12th, 2019 AT 6:19 PM
Tiny
NASER NASER
  • MEMBER
  • 836 POSTS
Sorry I thought you meant the plastic piece between the sprockets, is it a bolt or what? Or you are talking about the rail itself? This is on the 271.8 benz c250 class?
Was this
answer
helpful?
Yes
No
Thursday, September 12th, 2019 AT 6:20 PM
Tiny
NASER NASER
  • MEMBER
  • 836 POSTS
Chain is loose on both ends if the sprockets now and the rail I can move it with my hand only held by the pin in the cover, so I don't think there is any more play to get loosened.
Was this
answer
helpful?
Yes
No
Thursday, September 12th, 2019 AT 6:22 PM
Tiny
JACOBANDNICKOLAS
  • MECHANIC
  • 109,747 POSTS
Chances are you are correct. And yes the rail. At this point, I feel it need removed and installed as a unit. Chances are it won't go unless it is done one step at a time. I was hoping you could get the play needed.
Was this
answer
helpful?
Yes
No
Thursday, September 12th, 2019 AT 7:06 PM
Tiny
NASER NASER
  • MEMBER
  • 836 POSTS
How are these chain guards removed, by removing the lower cover? :[
How can I ensure that both cams when lined up with the arrow that they are not 180 degrees off, is that possible here? They moved a bit when the chain jumped while I was turning the crank, but I put the T0 when I began the job.
Was this
answer
helpful?
Yes
No
Friday, September 13th, 2019 AT 9:49 AM
Tiny
JACOBANDNICKOLAS
  • MECHANIC
  • 109,747 POSTS
Welcome back:

I attached two pictures below. Identify which one you are trying to remove. I hope it's the second because the first requires cylinder head removal.

Joe
Images (Click to make bigger)
Thumb
Thumb
Was this
answer
helpful?
Yes
No
+1
Friday, September 13th, 2019 AT 6:13 PM
Tiny
NASER NASER
  • MEMBER
  • 836 POSTS
I don't see the difference, these are for the 271.9 engines which are supercharged, mine is the 1.8l turbo 271.8.
Was this
answer
helpful?
Yes
No
Friday, September 13th, 2019 AT 6:18 PM

Please login or register to post a reply.

Sponsored links