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 11-14-2007, 05:49 PM
BenzB0y's Avatar
BLUE BEAST
 
Join Date: Sep 2007
Location: Portsmouth, Va
Posts: 129
Arrow 300SDL Valve Body

1. What causes the reverse gear to lag before catching. Is this a MB feature?

2.Where are the screens in the body itself that will build up gunk and cause poor shifting?

3.What are some things to do to extend the life of a transmission?

Thank you for ALL replys, comments, and opinions!

Last edited by BenzB0y; 11-19-2007 at 07:42 PM.
Reply With Quote
  #2  
Old 11-28-2007, 10:53 AM
BenzB0y's Avatar
BLUE BEAST
 
Join Date: Sep 2007
Location: Portsmouth, Va
Posts: 129
Exclamation ANY help or opinions!!!

ANYONE who at least might have an idea, would be greatly appreciated!

I really don't drive this car a distance, because I'm worried the transmission is about to go. The RPM's start getting higher the faster I go. The RPM's normally stay at about 2000-2500 at 65-70 mph. I'm worried its stuck in 3rd gear or something. ANY replys' to my questions are greatly appreciated!

THANK YOU!
Reply With Quote
  #3  
Old 11-28-2007, 11:17 AM
TX76513's Avatar
Platinum Member
 
Join Date: Apr 2003
Location: Brandon, Mississippi
Posts: 5,203
1. My SDL does not lag when placed in reverse
2. The screens are in the valve body and can be cleaned when you service the transmission. If a transmission is serviced regularly you won't have anything to clean.
3. Regular Service will allow you to get the most life possible out of your transmission, but you must plan for the future as nothing is forever.
__________________
BENZ THERE DONE THAThttp://www.peachparts.com/shopforum/...c/progress.gif
15 VW Passat TDI
00 E420
98 E300 DT
97 E420 Donor Car - NEED PARTS? PM ME!
97 S500
97 E300D
86 Holden Jackaroo Turbo D
86 300SDL
(o\|/o)
Reply With Quote
  #4  
Old 12-21-2007, 02:26 AM
Registered User
 
Join Date: Oct 2005
Location: Austin TX
Posts: 352
I have that same problem, I put the car in reverse and it lags and then shifts. What causes that? I'm hoping to replace the tranny fluid with amsoil to see if that fixes anything. But I'm not wanting to replace the fluid if If I have to repair something in it.

Did you ever fix your problem?
__________________
Professional greasecar installer
Austin TX


98 Jetta TDI with grease car kit + veg-therm (totaled)
87 MB 300SDL running on B99 / greasecar kit + 30 fphe
www.austingreaseguys.com
Reply With Quote
  #5  
Old 12-21-2007, 09:02 AM
1986 300sdl 1985 380se
 
Join Date: Aug 2005
Location: West Monroe LA
Posts: 484
I Have a 86 300sdl and at 55mph my rpm is 2100, at 60 it is 2400rpm
at 65 2700 rpm and at 70 mph it sits right at 3000rpm. This is totally normal. This car was designed when the national speed limit was 55 mph. Now that it is 70 or 75 in places, you will notice 3000 to 3300 rpm at those speeds.

I have no lag when I place my car in reverse. My car has 104,000 miles and I change transmission fluid and filter every two years religiously.

John
Reply With Quote
  #6  
Old 12-22-2007, 06:57 PM
Hit Man X's Avatar
I LOVE BRUNETTES
 
Join Date: Sep 2004
Location: FUNKYTOWN
Posts: 9,058
Thumbs up

Reverse delay means the trans is getting tired. My 300sel takes a while to get into reverse. But with 255k hey, it's been around for a long time.

Service it on a regular basis, this includes draining the converter. Keep the shifts tight/firm. Drive in the city in 3rd gear to limit 3-4 and 4-3 shifting.
__________________
I'm not a doctor, but I'll have a look.

'85 300SD 244k
'87 300SDL 251k
'90 300SEL 325k
'91 560SEL 189k

Eight others from IH, BMW, GM, Ford, and Volvo.

Liberty will not descend to a people; a people must raise themselves to liberty.
[/IMG]
Reply With Quote
  #7  
Old 06-19-2008, 07:09 PM
BenzB0y's Avatar
BLUE BEAST
 
Join Date: Sep 2007
Location: Portsmouth, Va
Posts: 129
Question

would that cause damage to drive around, stop and go traffic in just 3rd gear? seems like it would...
__________________

BLUE BEAST

Thanks for advice, replys, and suggestions!

1987 300SDL Turbo 308,000 miles
"seen better days"
Reply With Quote
  #8  
Old 06-19-2008, 09:27 PM
Hit Man X's Avatar
I LOVE BRUNETTES
 
Join Date: Sep 2004
Location: FUNKYTOWN
Posts: 9,058
Thumbs up

Quote:
Originally Posted by BenzB0y View Post
would that cause damage to drive around, stop and go traffic in just 3rd gear? seems like it would...


Think about it. What damage could possibly be incurred?

If you still don't believe me, I have some ocean front property in AZ you may be interested in also.
__________________
I'm not a doctor, but I'll have a look.

'85 300SD 244k
'87 300SDL 251k
'90 300SEL 325k
'91 560SEL 189k

Eight others from IH, BMW, GM, Ford, and Volvo.

Liberty will not descend to a people; a people must raise themselves to liberty.
[/IMG]
Reply With Quote
  #9  
Old 06-19-2008, 09:32 PM
redassag00's Avatar
I like OM603's
 
Join Date: Nov 2005
Location: Katy, TX
Posts: 1,232
A one speed transmission would be better in your case, that way it does no damage....
__________________
91 350SD
15 F250 6.7L
97 FZJ80 LX450
Overseas Rides:
Santa Fe LWB 2.2L CRDi
GWM Steed 2.0 CRD
Reply With Quote
  #10  
Old 06-19-2008, 11:40 PM
Hatterasguy's Avatar
Zero
 
Join Date: Nov 2002
Location: Milford, CT
Posts: 19,306
If you read the owners manual it will tell you that trans breaking is fine. In slow traffic I keep it in 2nd to save the breaks and keep it from hunting gears. Its okay if the engine gets up to 3k or 4k, they are built for that and perfectly happy with it.


Usualy shifting problems are vacuum related, I forget the troubleshooting process but its in the FSM. You can adjust the firmness by the modulator on the side of the IP, but it sounds like you have a leak.

Change the fluid if you are getting a delay going from F-R, their should be none.
__________________
2017 Chevy Silverado 1500 LTZ
2007 Tiara 3200

"No free man shall ever be debarred the use of arms. The strongest reason for the people to retain the right to keep and bear arms is, as a last resort, to protect themselves against tyranny in government."
-Thomas Jefferson
Reply With Quote
  #11  
Old 06-19-2008, 11:59 PM
Registered User
 
Join Date: Aug 2005
Location: Buford, GA
Posts: 438
besides changing the fluid, using synthetic fluids, the biggest thing for transmission life is to keep it cool.
Most people do not realize the most damage to truck transmissions is during backing up, when air is not forced through the radiator/transmission cooler. Transmission temperatures will soar !!!
__________________
87 300SDL - 215K Miles !!
99 F-350CC Dually PSD - 190K
86 300SDL - 189K
All on B-100
Reply With Quote
  #12  
Old 06-20-2008, 12:08 AM
Hit Man X's Avatar
I LOVE BRUNETTES
 
Join Date: Sep 2004
Location: FUNKYTOWN
Posts: 9,058
Thumbs up

Quote:
Originally Posted by probear View Post
besides changing the fluid, using synthetic fluids, the biggest thing for transmission life is to keep it cool.
Most people do not realize the most damage to truck transmissions is during backing up, when air is not forced through the radiator/transmission cooler. Transmission temperatures will soar !!!


You don't have a fan clutch pulling air thru at all times?
__________________
I'm not a doctor, but I'll have a look.

'85 300SD 244k
'87 300SDL 251k
'90 300SEL 325k
'91 560SEL 189k

Eight others from IH, BMW, GM, Ford, and Volvo.

Liberty will not descend to a people; a people must raise themselves to liberty.
[/IMG]
Reply With Quote
  #13  
Old 06-20-2008, 09:47 AM
Registered User
 
Join Date: Aug 2005
Location: Buford, GA
Posts: 438
Quote:
Originally Posted by Hit Man X View Post
You don't have a fan clutch pulling air thru at all times?
Sure, but in reverse, you generate a lot more heat since the torque converter is not locked up. The bottom line is lots of heat generated and very little airflow. As with the heat, the hotter the transmission fluid, the shorter it's life. I personally do not generally like running the transmission fluid through the radiator core either. There is no reason that the transmission should be at engine temperature. However, in doing so, it's a trade off for the few times that the transmission gets really hot even though that is usually stop and go traffic, when the greatest load is on the cooling system.
__________________
87 300SDL - 215K Miles !!
99 F-350CC Dually PSD - 190K
86 300SDL - 189K
All on B-100
Reply With Quote
  #14  
Old 06-20-2008, 10:18 AM
Willing Participant
 
Join Date: Aug 2005
Location: USA
Posts: 1,327
Anybody remember seeing that picture of the groove the pin in the differential wore after years of throwing it between drive and reverse? The peg is supposed to be poking through a hole, but this guy had a 3" long slot worn out. Anybody have that pic handy?
__________________
1982 300CD Petrol/Black Leather
Reply With Quote
  #15  
Old 06-25-2008, 05:29 PM
BenzB0y's Avatar
BLUE BEAST
 
Join Date: Sep 2007
Location: Portsmouth, Va
Posts: 129
Arrow Possible rebuild......

Had it diagnosed by a MBH owner that took it for a test drive with me in it after looking at the engine. He said it seems that the clutch for second or whatever is gone and it jumps from 1st-3rd gear. Not sure if that means it's time for a rebuild or if its possible?

Thanks for any input...
__________________

BLUE BEAST

Thanks for advice, replys, and suggestions!

1987 300SDL Turbo 308,000 miles
"seen better days"
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 04:42 PM.


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