Timing chain mistake - Mercedes-Benz Forum
Reply
LinkBack Thread Tools Display Modes
post #1 of 12 (permalink) Old 03-17-2012, 12:20 PM Thread Starter
BenzWorld Senior Member
 
BrooklynMatt's Avatar
 
Date registered: Dec 2011
Vehicle: 1984 380SL, 1991 300E
Location: Brooklyn, NY
Posts: 432
Mentioned: 0 Post(s)
Quoted: 0 Post(s)
(Thread Starter)
Timing chain mistake

I'm ashamed and embarrassed to have to post this, considering all of the documentation that exists for this procedure, but...I screwed up the timing chain installation. I had one Tyrap on the RS sprocket, on the inboard side of the engine but not on the outboard side. I had forgotten that I put the tensioner back in and when I removed the master link and peeled the chain back it pulled the slack down toward the crank sprocket, not all the way in though. I tried to compress the tensioner to see if I could line up the links again but there were now about 4 teeth between the ends of the chain. I figured not a big deal since it was just the slack and all of the other gears were still meshed with the chain. To reiterate, the chain stayed in position b/w the intermediate sprocket and the RS sprocket.

I continued along, feeding the new chain in when suddenly, dead stop. I had freely rotated the engine several times before starting the procedure so I know something's F'd up. That's how I left it. Please help.

Matt.
How do I dig myself out of this?
BrooklynMatt is offline  
Sponsored Links
Advertisement
 
post #2 of 12 (permalink) Old 03-17-2012, 12:26 PM
BenzWorld Elite
 
tdoriot's Avatar
 
Date registered: Jul 2011
Vehicle: 1993 600SL, 1973 450 SL,1982 380SL,1998 SLK 230, 1968 Firebird, 2001 Dodge Ram 4x4,2005 Ford Escape
Location: washougal Wa
Posts: 5,247
Mentioned: 7 Post(s)
Quoted: 416 Post(s)
Post

You are doing the right thing by STOPPING ! You were smart enough to know that a valve is probably touching a piston. The second good thing you did was asking for help here. I did mine 20 years ago and luckily mine went well, but dont remember the details. There are many guys here that will help figure this out. Wait till you get a consensus. It will all work out. Good luck, keep us posted.
tdoriot is offline  
post #3 of 12 (permalink) Old 03-17-2012, 12:43 PM
BenzWorld Elite
 
mramay's Avatar
 
Date registered: Feb 2005
Vehicle: Two '87 570SECs, one '87 560SEL
Location: Las Vegas, NV
Posts: 4,418
Mentioned: 6 Post(s)
Quoted: 259 Post(s)
I'm assuming that the new chain was attached to the old chain by the master link and that you are pulling the "old" chain out while feeding in the new one?

I did almost the same thing on my last chain replacement and tried moving the passenger cam gear one tooth under the chain. Gently lift the chain off that gear, then rotate that gear backwards a tooth or two, then lay the chain back on the gear. See if it will let you rotate it (by hand, of course) at this point. Once I got the new chain in, then it was a case of rotating the engine until the timing marks on the cam hub lined up with the ones on the cam towers, then read the timing mark on the harmonic balancer to verify everything is lined up as required. Mine was still off a tooth and was adjusted as above until all the timing marks lined up right.
mramay is offline  
Sponsored Links
Advertisement
 
post #4 of 12 (permalink) Old 03-17-2012, 02:04 PM
Moderator
 
rowdie's Avatar
 
Date registered: Jun 2008
Vehicle: 1986 560SL: '84 500SL: '84 280SL 5 speed: other 107s
Location: OklaMoKan
Posts: 31,293
Mentioned: 51 Post(s)
Quoted: 111 Post(s)
Lifetime Premium Member
File it under s**t happens Matt. No reason to be embarrassed. Asking help before proceeding and causing more damage would be bare assing.

I can't think of a reason that the right cam can't be repositioned. Just don't disturb the left cam or balancer. Oh and remove the tensioner. It should be installed last.

Good luck.
rowdie is offline  
post #5 of 12 (permalink) Old 03-17-2012, 02:44 PM
BenzWorld Elite
 
tdoriot's Avatar
 
Date registered: Jul 2011
Vehicle: 1993 600SL, 1973 450 SL,1982 380SL,1998 SLK 230, 1968 Firebird, 2001 Dodge Ram 4x4,2005 Ford Escape
Location: washougal Wa
Posts: 5,247
Mentioned: 7 Post(s)
Quoted: 416 Post(s)
Post

You just heard form the Jedi Master ! Do as he says !
tdoriot is offline  
post #6 of 12 (permalink) Old 03-17-2012, 03:00 PM
Always Remembered RIP
 
petesmga's Avatar
 
Date registered: Aug 2009
Vehicle: 1979 280sl 4 sp w/ac 1957 MGA 1998 volvo xc/70 2004 F150
Location: western mass. usa
Posts: 6,050
Mentioned: 3 Post(s)
Quoted: 41 Post(s)
And remember were all FUM-DUCKS that's why were here.
petesmga is offline  
post #7 of 12 (permalink) Old 03-17-2012, 03:30 PM
Lifetime Premium Member
 
Date registered: Apr 2006
Vehicle: 1983 380SL, 2000 S430, 1991 420SEL (retired) - RHD
Location: Gold Coast Australia
Posts: 4,954
Mentioned: 6 Post(s)
Quoted: 396 Post(s)
Lifetime Premium Member
Quack Quack
Aussiemerc is offline  
post #8 of 12 (permalink) Old 03-17-2012, 04:25 PM Thread Starter
BenzWorld Senior Member
 
BrooklynMatt's Avatar
 
Date registered: Dec 2011
Vehicle: 1984 380SL, 1991 300E
Location: Brooklyn, NY
Posts: 432
Mentioned: 0 Post(s)
Quoted: 0 Post(s)
(Thread Starter)
Phew!

First of all, thanks for the lifelines. It occurred to me that in honor of St Patrick, Murphy is out in force today. I did as Mramay advised and in so doing discovered that the bind was at the intermediate gear. The chain must have jammed due to slack. I removed the tensioner and proceeded without incident until I uncoupled the new chain from the old (wait for it...) and the end of the chain slid into the block, with the unfastened master link on it!

With my hands shaking I bent up a wire hanger and went fishing. After about ten minutes I finally got it out and heard the master link tink, tink, tink....onto the garage floor.

Nerve racking day but with a happy ending.

Thanks, guys.
BrooklynMatt is offline  
post #9 of 12 (permalink) Old 03-17-2012, 04:32 PM
Always Remembered RIP
 
petesmga's Avatar
 
Date registered: Aug 2009
Vehicle: 1979 280sl 4 sp w/ac 1957 MGA 1998 volvo xc/70 2004 F150
Location: western mass. usa
Posts: 6,050
Mentioned: 3 Post(s)
Quoted: 41 Post(s)
Trust me it wouldn't have been the first or last master link to end up in the pan. Break out the Guinness, and let Erin go bra-less.

Name:  Erin-Heatherton-02.jpg
Views: 1411
Size:  32.5 KB
petesmga is offline  
post #10 of 12 (permalink) Old 03-17-2012, 04:32 PM
BenzWorld Elite
 
mramay's Avatar
 
Date registered: Feb 2005
Vehicle: Two '87 570SECs, one '87 560SEL
Location: Las Vegas, NV
Posts: 4,418
Mentioned: 6 Post(s)
Quoted: 259 Post(s)
On that note, I'm gonna go find a green beer in celebration!!
mramay is offline  
Sponsored Links
Advertisement
 
Reply

  Mercedes-Benz Forum > Mercedes-Benz Roadster Forums > R/C107 SL/SLC Class

Quick Reply
Message:
Options

Register Now



In order to be able to post messages on the Mercedes-Benz Forum forums, you must first register.
Please enter your desired user name, your email address and other required details in the form below.

User Name:
Password
Please enter a password for your user account. Note that passwords are case-sensitive.

Password:


Confirm Password:
Email Address
Please enter a valid email address for yourself.

Email Address:
OR

Log-in











Currently Active Users Viewing This Thread: 3 (1 members and 2 guests)
DocLorren



Similar Threads
Topic Author Forum Replies Last Post
NEW FS: Radiator fluid, 190e- fuel filter/timing chain/timing chain tensioner ect Benznoob26 For Sale/Wanted/Trade/Giveaway 4 08-29-2010 11:31 PM
Timing Chain Master Link - will Iwis work on the BECK ARNLEY CHAIN?? xxxbradxxx W123 E,CE,D,CD,TD,TE Class 8 10-17-2009 05:53 AM
Feeding in timing chain, attaching to old chain petecooke W123 E,CE,D,CD,TD,TE Class 4 09-18-2009 10:36 AM
IWIS timing chain compared to JWIS timing chain. ArkRoyal W126 S,SE,SEC,SEL,SD,SDL Class 5 07-01-2008 07:22 PM
Timing chain replacement/timing issue 1990 420SEL supersport6 W126 S,SE,SEC,SEL,SD,SDL Class 1 12-09-2003 02:03 PM

Posting Rules  
You may post new threads
You may 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 Off
Trackbacks are On
Pingbacks are On
Refbacks are On

 

Title goes here

close
video goes here
description goes here. Read Full Story
For the best viewing experience please update your browser to Google Chrome