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 09-16-2010, 02:00 PM
mobenz's Avatar
Registered User
 
Join Date: Sep 2006
Location: SW Missouri
Posts: 103
Clunk and no transmission

1984 300TDT w/Automatic. Shifted into Reverse, and backed out of the drive. There was a "clunk" when the tranny engaged. Tried to shift into Drive, but nothing. I now have no forward or reverse. I checked the linkage, and have the correct motion through all the linkage down to the tranny. I suspect something inside gave out. How serious is this, and is there any chance that a fairly mechanically minded person can resolve this, or is it off to the transmission shop?
__________________
"If we can't have fun while we're here, we might as well go to the house".

1978 300CD
1985 300TD
1999 Land Rover Discovery II
rover1@sbcglobal.net
Reply With Quote
  #2  
Old 09-16-2010, 04:00 PM
sixto's Avatar
smoke gets in your eyes
 
Join Date: Jun 2000
Location: SF Bay Area
Posts: 20,233
Can you turn the torque converter independently of the flexplate and ring gear?

Sixto
87 300D
Reply With Quote
  #3  
Old 09-16-2010, 07:35 PM
mobenz's Avatar
Registered User
 
Join Date: Sep 2006
Location: SW Missouri
Posts: 103
I would have no idea how to do that.
__________________
"If we can't have fun while we're here, we might as well go to the house".

1978 300CD
1985 300TD
1999 Land Rover Discovery II
rover1@sbcglobal.net
Reply With Quote
  #4  
Old 09-16-2010, 08:52 PM
cirrusman's Avatar
Just add Diesel.
 
Join Date: Aug 2008
Location: Salt Lake City, Utah
Posts: 585
I'd raise it on jackstands in the rear with the car in park and see if the rear tires turn. If they do I'd say you have something broken. If both turn, one forward and the other backward, I'd say it's the tranny, if just one turns at a time, can be the differential. There's my two pennies as I'm not all that good with tranny problems... Good luck!
__________________
~cirrusman

1983 Mercedes Benz 300SD - Wife calls him "Chitty Chitty Bang Bang"





1988 Toyota Pickup (The little cargo hauler)
1965 Ford F100 (The big cargo hauler)
2004 Subaru Outback (Wife's ride)


Gone:
1987 Cadillac Fleetwood Brougham
1986 Volvo 740 GL Station Wagon - Piece of junk.
1981 Volvo 242 DL 2 Door - Hated to see it go. R.I.P.
1987 Pontiac Fiero GT - Wrapped it around a light pole, racing days are over...
Reply With Quote
  #5  
Old 09-16-2010, 08:55 PM
vstech's Avatar
DD MOD, HVAC,MCP,Mac,GMAC
 
Join Date: Mar 2006
Location: Mount Holly, NC
Posts: 26,149
if you put it on jackstands, be sure you have a solid surface to place them on, and chok the front wheels firmly, it wouldn't hurt to strap it to a tree/wall to be SURE it's not going to move...
__________________
John HAUL AWAY, OR CRUSHED CARS!!! HELP ME keep the cars out of the crusher! A/C Thread
"as I ride with my a/c on... I have fond memories of sweaty oily saturdays and spewing R12 into the air. THANKS for all you do!

My drivers:
1987 190D 2.5Turbo
1987 190D 2.5Turbo
1987 190D 2.5-5SPEED!!!

1987 300TD
1987 300TD
1994GMC 2500 6.5Turbo truck... I had to put the ladder somewhere!
Reply With Quote
  #6  
Old 09-17-2010, 12:21 AM
Registered User
 
Join Date: Jun 2007
Location: new braunfels, TX
Posts: 290
It sounds like your B2 piston broke. This can be repaired with the tranny in place.
__________________
Dave
1983 300D Daily Driver







Reply With Quote
  #7  
Old 09-17-2010, 11:15 AM
Registered User
 
Join Date: Apr 2007
Posts: 342
Quote:
Originally Posted by blindwolf View Post
It sounds like your B2 piston broke. This can be repaired with the tranny in place.
B2 issues don't affect reverse, which is also broken here.

I haven't seen any results from the other troubleshooting suggestions here??????
__________________
James Marriott
2003 Buick Regal
1983 300D (228k, frau Auto)
1996 Suburban K2500 (192k, 6.5 turbo diesel/4WD towmaster 10,000)
www.engineeringworks.biz
1987 300SDL junker 170k
1982 300SD junker, 265k
Reply With Quote
  #8  
Old 09-17-2010, 11:43 AM
Registered User
 
Join Date: Nov 2004
Location: Nova Scotia, Canada.
Posts: 6,510
Put the nose of the car against something heavy and solid like a tree. Otherwise have someone in the car start it. Put emergency brake on. Engage drive on the transmission selector. Get down cautiously beside car and look to see if the driveshaft is turning. You may have had a constant velocity joint fail. The clunk you heard makes this a slightly better possibility than it would be otherwise. Still a long shot but possible.
Reply With Quote
  #9  
Old 09-17-2010, 05:22 PM
cirrusman's Avatar
Just add Diesel.
 
Join Date: Aug 2008
Location: Salt Lake City, Utah
Posts: 585
By checking if the tires turn I meant with the engine off turn them yourself by hand...
__________________
~cirrusman

1983 Mercedes Benz 300SD - Wife calls him "Chitty Chitty Bang Bang"





1988 Toyota Pickup (The little cargo hauler)
1965 Ford F100 (The big cargo hauler)
2004 Subaru Outback (Wife's ride)


Gone:
1987 Cadillac Fleetwood Brougham
1986 Volvo 740 GL Station Wagon - Piece of junk.
1981 Volvo 242 DL 2 Door - Hated to see it go. R.I.P.
1987 Pontiac Fiero GT - Wrapped it around a light pole, racing days are over...
Reply With Quote
  #10  
Old 09-18-2010, 06:59 AM
mobenz's Avatar
Registered User
 
Join Date: Sep 2006
Location: SW Missouri
Posts: 103
Smile

Absolutely nothing happens when I move the selector when the engine is running. Common sense tells me that somewhere between my hand and the internal working components of the tranny that there is a disconnect. I had a piece of the linkage come apart once on my 300CD, just hanging loose. This feels exactly like that. However, I have been under the car, and can see the linkage moving, up to, and including the shaft entering the tranny. Thanks for all your help. I do have an appt scheduled with the shop, but I was hoping I would be able to do this myself. I do so love getting under there and getting covered with black stuff.
__________________
"If we can't have fun while we're here, we might as well go to the house".

1978 300CD
1985 300TD
1999 Land Rover Discovery II
rover1@sbcglobal.net
Reply With Quote
  #11  
Old 09-18-2010, 11:41 AM
Registered User
 
Join Date: May 2006
Location: Old Town, Fl
Posts: 350
This may sound funny, but does the speedo register if you put it in drive & rev the engine? If so, check the output flange at the rear of the trans (it may have pulled out of the output shaft due to a loose nut) & all flex disks. If not, It's the trans or TC. Have you checked the fluid level?
__________________
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
  #12  
Old 09-18-2010, 01:38 PM
sixto's Avatar
smoke gets in your eyes
 
Join Date: Jun 2000
Location: SF Bay Area
Posts: 20,233
Quote:
Originally Posted by mobenz View Post
I would have no idea how to do that.
Lie under the car and peep through the grating at the bottom of the bell housing. Try to hold the torque converter steady as the engine turns. The starter ring gear will turn with the engine, the torque converter might or can slip if the flex plate is torn. A monkey like me can turn the engine with a ratchet on the crank pulley bolt with my knees but maybe you can recruit help. I think with a 617 you can turn the engine by the power steering pump pulley. Turn the engine only in the direction it normally turns.

While you're under there, try to pry the torque converter away from the flywheel.

Sixto
87 300D
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 03:55 AM.


Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2018, 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