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 ShopForum > Technical Information and Support > Tech Help

Reply
 
LinkBack Thread Tools Display Modes
  #16  
Old 01-14-2002, 12:02 PM
PA_Joe_300E
Guest
 
Posts: n/a
Thanks Vaughn and Paul
Reply With Quote
  #17  
Old 01-14-2002, 12:08 PM
Moderator
 
Join Date: Mar 2000
Location: Gainesville FL
Posts: 6,844
One thought on holding the motor. It sounds like a lot of work. We place the engine to power stroke by watching the cam (add air slowly to see direction engine will spin) and let the engine turn til it stops. The air still holds the valves up even if the piston is down.

I worry a little about the act of holding the crank bolt. I would hate to loosen it as that is what the direction of rotation would do. Its a real mess when the balancer falls off.
__________________
Steve Brotherton
Continental Imports
Gainesville FL
Bosch Master, ASE Master, L1
33 years MB technician
Reply With Quote
  #18  
Old 01-14-2002, 12:24 PM
Registered User
 
Join Date: Jun 2001
Location: California
Posts: 324
Steve,

I thought about that, but with the plugs out, I figured that it wouldn't stop turning over until the piston was at the bottom and the exhaust valve would probably be opening by then.

With the piston very close to TDC, the effective lever arm of the crank is very short, maybe a quarter of an inch. The torque applied to the crank nut is very little. I did the math to make sure I wasn't going to loosen the crank nut and have the engine turn over. It was an extra step to hold the crank in place, but I thought it worked great.

Thanks for the pro perspective though!

Dennis
__________________
D.H.

04 ML500
02 E430

Experience is something you don't get until just after you need it.
Reply With Quote
  #19  
Old 01-14-2002, 12:48 PM
pmizell's Avatar
Benz Zealot
 
Join Date: Jun 2001
Location: Houston, Texas
Posts: 838
Per Dennis' request, here's a pic of his valve springs:

Dennis said:

Quote:
Here’s a picture that should help. I was always wondering what the heck it was going to look like in there. In the picture I have taken off the rocker stand for cyl # 1 and have the spring and seal off of the exhaust valve.
Reply With Quote
  #20  
Old 01-14-2002, 01:20 PM
PA_Joe_300E
Guest
 
Posts: n/a
Thanks Steve,

I've done this on small block chevys and I didn't remember being concerned with the position of the piston once the rocker was off.

Paul your engine is clean.... wow... what your secret
Reply With Quote
  #21  
Old 01-14-2002, 01:25 PM
Registered User
 
Join Date: Jun 2000
Location: Saugus, CA USA
Posts: 1,989
Newton who?

I asked that very question myself a while back, here's the link:

[URL=http://http://www.peachparts.com/shopforum/showthread.php?threadid=9137&highlight=newton]
Reply With Quote
  #22  
Old 01-14-2002, 02:09 PM
mplafleur's Avatar
User Friendly
 
Join Date: Sep 2001
Location: Lathrup Village, Michigan
Posts: 2,939
What is your oil consumption now? I just rebuilt the M103 in my 2.6 and it still consumes about a quart every 1000 miles or less. (I've put in 3 quarts in a little under 3000 miles since the rebuild)
__________________
Michael LaFleur

'05 E320 CDI - 86,000 miles
'86 300SDL - 360,000 miles
'85 300SD - 150,000 miles (sold)
'89 190D - 120,000 miles (sold)
'85 300SD - 317,000 miles (sold)
'98 ML320 - 270,000 miles (sold)
'75 300D - 170,000 miles (sold)
'83 Harley Davidson FLTC (Broken again) :-(
'61 Plymouth Valiant - 60k mikes
2004 Papillon (Oliver)
2005 Tzitzu (Griffon)
2009 Welsh Corgi (Buba)

Reply With Quote
  #23  
Old 01-14-2002, 02:44 PM
PA_Joe_300E
Guest
 
Posts: n/a
Just about the same. how many miles om your motor? did you replace the valve guides, rings, getting any blow-by
Reply With Quote
  #24  
Old 01-14-2002, 02:53 PM
Registered User
 
Join Date: Jun 2001
Location: California
Posts: 324
PA_Joe,

That's actually my engine. Paul helped me re-size and post the picture. Thanks Paul!

I don't think it's especially clean right now, but I do clean it once a year or so. I use a Craftsman 5 hp pressure washer with a Honda engine. I LOVE that pressure washer. I turn the pressure way down. I spray the whole engine with degreaser and let it soak a while. After blasting it off it looks new again - these MBZ engine bays clean up nicely. I know all the pros and cons, but I like it clean.

mplafleur, it has only been about 2 1/2 weeks since I did the work, and maybe 500-600 miles. I checked the oil a couple of days ago and it hadn't used any. I have about 2,300 miles on that oil, so I will be changing it in a couple of weeks. In a 3,000 mile interval, it tends to use a quart in the first 2,000 and another quart in the last 1,000. I attribute this to the oil breaking down and thinning. I'll report back after the next 3,000 mile run and let everybody know if my oil usage was reduced. Since the sealing lips on the inside of the seals were worn flat, I have high hopes that the consumption will be history.
__________________
D.H.

04 ML500
02 E430

Experience is something you don't get until just after you need it.
Reply With Quote
  #25  
Old 01-14-2002, 05:18 PM
mplafleur's Avatar
User Friendly
 
Join Date: Sep 2001
Location: Lathrup Village, Michigan
Posts: 2,939
PA_Joe,

I may be out your way next week. I have to go out to our electronics plant in Lansdale for the week. The plant is actually between Lansdale and Norristown.
__________________
Michael LaFleur

'05 E320 CDI - 86,000 miles
'86 300SDL - 360,000 miles
'85 300SD - 150,000 miles (sold)
'89 190D - 120,000 miles (sold)
'85 300SD - 317,000 miles (sold)
'98 ML320 - 270,000 miles (sold)
'75 300D - 170,000 miles (sold)
'83 Harley Davidson FLTC (Broken again) :-(
'61 Plymouth Valiant - 60k mikes
2004 Papillon (Oliver)
2005 Tzitzu (Griffon)
2009 Welsh Corgi (Buba)

Reply With Quote
  #26  
Old 01-14-2002, 05:52 PM
PA_Joe_300E
Guest
 
Posts: n/a
Mike,

I have a client in Norristown so I'm there often. Let me know...
Reply With Quote
  #27  
Old 01-14-2002, 10:56 PM
Registered User
 
Join Date: Apr 2001
Location: Joliet Illinois
Posts: 309
A picture is worth a thousand words

I was worrying if my valve spring compressor would work on the m103 springs but it looks like there is plenty of space. Thanks!
Reply With Quote
  #28  
Old 01-16-2002, 11:36 AM
Registered User
 
Join Date: Nov 2000
Location: Alameda, CA
Posts: 45
Oil Consumption

I've replaced the valve seals on my '88 300E too. The oil consumption stopped for ...say 20K miles, then slowly creeped up to the usual 1 quart/2000 miles.
nice post.

Joel
__________________
Joel P. Davis
1992 500SEL
Reply With Quote
  #29  
Old 01-16-2002, 12:56 PM
Registered User
 
Join Date: Aug 2001
Location: secret
Posts: 3,044
Joel, did you check your valve guides when you did the seal job?
Reply With Quote
  #30  
Old 01-16-2002, 12:59 PM
mplafleur's Avatar
User Friendly
 
Join Date: Sep 2001
Location: Lathrup Village, Michigan
Posts: 2,939
I didn't check mine either. I told the machine shop to check them and they said they were OK. I didn't verify them though.
__________________
Michael LaFleur

'05 E320 CDI - 86,000 miles
'86 300SDL - 360,000 miles
'85 300SD - 150,000 miles (sold)
'89 190D - 120,000 miles (sold)
'85 300SD - 317,000 miles (sold)
'98 ML320 - 270,000 miles (sold)
'75 300D - 170,000 miles (sold)
'83 Harley Davidson FLTC (Broken again) :-(
'61 Plymouth Valiant - 60k mikes
2004 Papillon (Oliver)
2005 Tzitzu (Griffon)
2009 Welsh Corgi (Buba)

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
Valve Stem Seals Tool rs899 Diesel Discussion 5 06-13-2003 12:38 AM
Valve stem seals 300CE...help... Philnguyen Tech Help 2 03-12-2003 10:57 PM
Oil Filter Collapse JoeMB Diesel Discussion 13 01-22-2003 01:06 PM
M103 Valve guides edbardzik Tech Help 3 06-01-2000 08:37 AM
Determining if Valve Stem Seals Are Wornm Mike Murrell Tech Help 4 03-24-2000 12:33 PM



All times are GMT -4. The time now is 12:09 AM.


Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2017, vBulletin Solutions, Inc.
Search Engine Optimization by vBSEO 3.6.0
Copyright 2011 Pelican Parts - Posts may be archived for display on the Peach Parts or Pelican Parts Website -    DMCA Registered Agent Contact Page