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
  #1  
Old 09-10-2002, 10:34 PM
DUKEisDOUG
Guest
 
Posts: n/a
Exclamation HARSH shifting into gear from NEUTRAL 1988 560SEL

My 1988 560SEL shifts so hard when I shift into reverse from Neutral it feels like the rear end is going to tear out.
shifting into a foward gear from NEUTRAL is harsh but not as severe.
It is a 1988 560 SEL with 120,000 miles fluids and filter been changed 10k miles ago. I really need to get to bottom of this before i tear out the rear end. It shifts smooth after it is in drive it's just from going from neutral into gear. Anyone have a clue what this may be. I had 2 mechanics look at it with no success.

Thank You,
Doug W.
Reply With Quote
  #2  
Old 09-11-2002, 08:11 AM
DUKEisDOUG
Guest
 
Posts: n/a
anyone

Doesn't anyone know. please I really need some insite on this problem.

Thank You
Reply With Quote
  #3  
Old 09-11-2002, 08:18 AM
The Safety Geek
 
Join Date: Jun 2001
Location: Sudbury, Massachusetts
Posts: 252
While I'm no expert, I believe that a good place to start would be the engine mounts. On many domestic vehicles (if there is such a thing anymore) with rear drive, the motor mounts going bad will lead to this conditions you describe. Good luck, and I hope this helps.
Reply With Quote
  #4  
Old 09-11-2002, 09:56 AM
Moderator
 
Join Date: Mar 1999
Location: Tucker, Ga USA
Posts: 12,153
There is a factory bulletin on modifing the transmission $$$.
However MB came out with a special fluid for "harsh" engagement problems.
MB part number 001-989-07-03, use only 3 liters & allow 400-500 miles.
__________________
MERCEDES Benz Master Guild Technician (6 TIMES)
ASE Master Technician
Mercedes Benz Star Technician (2 times)
44 years foreign automotive repair
27 Years M.B. Shop foreman (dealer)
MB technical information Specialist (15 years)
190E 2.3 16V ITS SCCA race car (sold)
1986 190E 2.3 16V 2.5 (sold)
Retired Moderator
Reply With Quote
  #5  
Old 09-11-2002, 12:00 PM
Registered User
 
Join Date: Aug 2002
Location: Milwaukee, WI
Posts: 126
Check a few things before assuming it's tranny trouble. As already posted, motor mounts are pretty important in these vehicles and will certainly wear/degrade. You should certainly check the driveshaft couplers - one at the front and one at the rear. Another normal wear item that will cause the problem you describe. In other words, you need to get under there and inspect the driveline. If nothing is out of place or obvious, then a check of the tranny would be next.

Good luck.
Reply With Quote
  #6  
Old 09-11-2002, 01:58 PM
DUKEisDOUG
Guest
 
Posts: n/a
checked mounts

Thank you everyone for your input on this matter. I checked motor mounts and joints plus had 2 mechanics do that also, and all was fine. For the suggestion of using special fluid, I am calling the MB dealer and ordering some soon as I i'm finnished writting this. If anyone else has any other suggestions I want to thank you in advance. Thanks again guys! !

Thank You,
Doug W.
Reply With Quote
  #7  
Old 09-11-2002, 02:08 PM
DUKEisDOUG
Guest
 
Posts: n/a
to: M.B. DOC

I forgot to mention:

M.B.DOC is there any posable chance you have that bullitin # you mentioned and how can I get my my hands on it.

Thank You,
Doug W.
P.S. Your "racer" sure sounds like alot of fun!
Reply With Quote
  #8  
Old 09-11-2002, 06:07 PM
Moderator
 
Join Date: Mar 1999
Location: Tucker, Ga USA
Posts: 12,153
Of course I do have the bulletin! The mod includes removal of the trans & replacement of internal parts & a special valve body. VERY$$$$$$
__________________
MERCEDES Benz Master Guild Technician (6 TIMES)
ASE Master Technician
Mercedes Benz Star Technician (2 times)
44 years foreign automotive repair
27 Years M.B. Shop foreman (dealer)
MB technical information Specialist (15 years)
190E 2.3 16V ITS SCCA race car (sold)
1986 190E 2.3 16V 2.5 (sold)
Retired Moderator
Reply With Quote
  #9  
Old 09-11-2002, 07:30 PM
TANK
Guest
 
Posts: n/a
FLEX DISKS!!!!!!!!!!!!!!!!!!!!!!

Me too. No big deal.
Reply With Quote
  #10  
Old 09-12-2002, 08:26 AM
Registered User
 
Join Date: Jul 2002
Location: Trenton, NJ
Posts: 248
I have a similar situation with my '87 560SEL. The motor mounts are OK and the flex disks were just replaced to quiet a vibration at speed.

When I first tried to get an answer to the harsh shifting into reverse from a couple of shops, I ended up talking to the manager at the local Aamco. As soon as I finished describing the problem, he indicated that this is the one area of weakness in the transmissions of these cars - if you can call something that usually doesn't show up until 150-200K miles a weakness. Evidently the clutch pack that is involved in shifting into gear wears thin requiring extra travel by the shifting servo. This causes an extra long delay and, due to the faster speed that things are now turning due to the delay, a harsher engagement especially into reverse. His recommendation was simply to drive it as long as I can stand it and then have it rebuilt for around $2,200. He indicated that the is very little likelihood of it causing further damage and that the worst that will happen is that I'll loose reverse.

MBDoc - does this sound like the service bulletin you were referring to?

jlc
__________________
Jeff

'87 560SEL 267K (177K on motor) Blue/Blue
'98 Buick LeSebre 60K (wife's car)
'56 Imperial Sedan 124K
Past Cars:
'67 Dodge Monaco 130K (Sold)
'87 Chrysler 5th Ave 245K and going strong (sold)
'73 Plymouth Satillite 175K (sold)
'96 Chrysler LHS 80K (totaled)
Reply With Quote
  #11  
Old 09-12-2002, 09:13 AM
Moderator
 
Join Date: Mar 1999
Location: Tucker, Ga USA
Posts: 12,153
Just re-building the trans won't fix the problem. There are several modifications that must be done or the trans will still engage D OR R firmly. TRY 3 liters of the 001-989-07-03 fluid first!!
__________________
MERCEDES Benz Master Guild Technician (6 TIMES)
ASE Master Technician
Mercedes Benz Star Technician (2 times)
44 years foreign automotive repair
27 Years M.B. Shop foreman (dealer)
MB technical information Specialist (15 years)
190E 2.3 16V ITS SCCA race car (sold)
1986 190E 2.3 16V 2.5 (sold)
Retired Moderator
Reply With Quote
  #12  
Old 09-12-2002, 05:02 PM
TANK
Guest
 
Posts: n/a
Thumbs up

M.B.Doc, you are saying try the fluid before the rebuild I assume. Boy would that be a nice easy fix. I have a friend with a 300d who had this problem though and simply replacing the flex disks solved his issue..
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 12:39 PM.


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