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 > Diesel Discussion

Reply
 
LinkBack Thread Tools Display Modes
  #1  
Old 10-18-2009, 11:14 AM
junqueyardjim's Avatar
Registered User
 
Join Date: Apr 2005
Location: Cicero, Hamilton County, Indiana about 30 miles north of downtown Indianapolis
Posts: 2,618
Broken cam shaft on 240D and what I found

I took the head off the 240D and found this
Boy it's hard work when you are 77 to pull the head on a 240D. But with a little help, I got it done this morning. Still is a difficult job with the PS pump and every thing else that has to be moved. Well, the PO told me the cam broke at speed and that was obvious. Number 5 lobe from the front, and it cracked right through the lobe. PO said he could not turn the engine and I believed him. I think now I should have tried harder, but I didn't and perhaps couldn't have. But on pulling the head, we can find no damage. Not a mark or a scratch, nothing at all in the block or bottom of the head or the valves. True the cam is very broke, and the center tower broke in three pieces. Cylinder side walls look and feel perfect and piston tops look new.
Now what could have caused this damage. Well in removing the head, we found that the three cap head screws that go down below the cam gear were missing and obviously had not been installed. The fourth screw that fits through the hole in the head, but not in the cam gear cavity, was in place. It also seemed that the torque required to loosen the head bolts varied an awful lot. A couple were extremely tight, most broke out very easy.
So my thinking now is to stay with the 240D. I am looking for a great driver and I had a pretty new 69 220D with a four speed and loved it. Everything is fast compared to my school bus, plus I have my awesome 300E 5 speed. This car has a fabulous paint job and a great interior, and with a good running 240D, I think it will make a great driver. I found out working this morning just how old I am, and I think I can save my self a lot of work. I think I will be happy just to put a good used head on it or a good used cam with towers if Tom W can find some..
__________________
__________________
Junqueyardjim
Christianity, if false, is of no importance, and if true, of infinite importance. The only thing it cannot be is moderately important. C.S. Lewis



1983 Mercedes W123 240D 4 Speed 285,000 on the road with a 617 turbo, beautiful butter yellow, license plate # 83 240D INDIANA

2003 Jaguar Type X, AWD. beautiful, good mileage,
Mom's car, but I won't let her drive it!
Reply With Quote
  #2  
Old 10-19-2009, 12:27 PM
Registered User
 
Join Date: May 2006
Location: Old Town, Fl
Posts: 350
Even if it looks like there are no bent valves I would still check them. They sit perpendicular to the cylinder bore, not offset like most engines, so even if they've been tagged by the piston they don't bend to the degree they would in other engines. All it takes is a few thou to cause a leak. Clean the head around the valves, set the head so the ports are facing up & pour some liquid (water, alcohol, gasoline) in the ports & look for seepage at the valve seats. Now's the time to address it if they leak.
__________________
82 300SD 202K
82 300SD 233K
83 300TD 340K
82 300TD 98k euro (parts on the hoof)
85 300TD 282K
83 300TD 197K
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 11:55 AM.


Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2019, 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