Parts Catalog Accessories Catalog Tech Info Tech Forums
 
  Search our site:    
 Cart  | Project List | Order Status | Help    


  Join us November 1st for Casino Night at the Pelican Parts Open House!
Benefiting LuMind - Research and Treatment for individuals with Down Syndrome
Go Back   PeachParts Mercedes ShopForum > Technical Information and Support > Diesel Discussion

Reply
 
LinkBack Thread Tools Display Modes
  #1  
Old 04-27-2005, 07:24 PM
jacrouch's Avatar
Registered User
 
Join Date: Jan 2005
Location: Virginia Beach, VA
Posts: 195
how tight should i tighten transmission pan bolts?

my tranny has started leaking again. when i originally tightened the bolts, they screwed in fine, and as i continued tightening, it became increasingly harder and harder to turn (that part is normal, i know). the weird thing is, instead of the bolts hitting a certain point and basically not turning at all anymore, it just kept getting harder and harder to turn...it was like it wouldn't tighten all the way for anything. i am positive i didn't cross-thread the bolts...i guess it was because of the thickness of the gasket? anyway, i don't want to overtighten/undertighten when i put it on next time...is a torque wrench in order here?

Edit:
is it okay to re-use the gasket in this case? it's only 3 months old...
__________________
1985 300D Turbo "Eunis"
Reply With Quote
  #2  
Old 04-27-2005, 07:35 PM
Hit Man X's Avatar
I LOVE BRUNETTES
 
Join Date: Sep 2004
Location: FUNKYTOWN
Posts: 8,419
Thumbs up

If ya used a quality rubber gasket, you should be able to reuse. Make sure it goes on dry too.

Tq... I usually go 96in-lbs (8ft-lbs) on the Valve Bodies I build and on the Pan.

I have to replace my neutral switch/backup light piece as my lights don't come on (yup, they're new).
__________________
I'm not a doctor, but I'll have a look.

'85 300SD
'87 300SDL
'90 300SEL
'91 560SEL

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
  #3  
Old 04-27-2005, 07:55 PM
jacrouch's Avatar
Registered User
 
Join Date: Jan 2005
Location: Virginia Beach, VA
Posts: 195
Quote:
Originally Posted by Hit Man X
If ya used a quality rubber gasket, you should be able to reuse. Make sure it goes on dry too.
when i put the gasket on, i was told to rub it down with tranny fluid...of course my friend did that part for me while i was installing the filter, and i didn't find out until later that he mistook rotella T motor oil for transmission fluid

could i get a few sencond opinions on the topic of whether or not i should wet the gasket with tranny fluid, just to be sure?
__________________
1985 300D Turbo "Eunis"
Reply With Quote
  #4  
Old 04-27-2005, 07:56 PM
Registered User
 
Join Date: Jun 2004
Location: West of Ft. Worth. TX
Posts: 3,336
The manual quotes:
pan bolts @ 7 Nm (5.2 Ft-lbs)
and the drain plug @ 14 Nm (10 Ft-lbs)
and the torque convertor drain plug @ 15 Nm (11 Ft-lbs)

I definitely would use some blue threadlocker with such low torque values.
__________________
Sam

84 300SD 350K+ miles ( Blue Belle )
Reply With Quote
  #5  
Old 04-27-2005, 07:58 PM
Hit Man X's Avatar
I LOVE BRUNETTES
 
Join Date: Sep 2004
Location: FUNKYTOWN
Posts: 8,419
Thumbs up

I never install gaskets wet... never had a leak. Valve covers, ATF pans, oil pans, you name it... I put it on dry.



Good to know on the Tq value, less than I use.
__________________
I'm not a doctor, but I'll have a look.

'85 300SD
'87 300SDL
'90 300SEL
'91 560SEL

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
  #6  
Old 04-27-2005, 08:11 PM
jacrouch's Avatar
Registered User
 
Join Date: Jan 2005
Location: Virginia Beach, VA
Posts: 195
Quote:
Originally Posted by Hit Man X
I never install gaskets wet... never had a leak. Valve covers, ATF pans, oil pans, you name it... I put it on dry.
no leaks, eh? good enough for me i'll take care of that tomorrow. btw...i plan on re-using what's left of the fluid...only 3 months old and it's mobile 1...as you know that stuff ain't cheap! is this okay?

thanks for your help
__________________
1985 300D Turbo "Eunis"
Reply With Quote
  #7  
Old 04-27-2005, 08:19 PM
Registered User
 
Join Date: Jun 2004
Location: West of Ft. Worth. TX
Posts: 3,336
Just to clarify, in case there might be a misunderstanding. The blue threadlocker is for the threads on the bolts. Some call it locktite.

I too have found that, with newer gasket materials, installing them dry has actually resulted in less leaks with the proper torque.
__________________
Sam

84 300SD 350K+ miles ( Blue Belle )
Reply With Quote
  #8  
Old 04-27-2005, 08:47 PM
Registered User
 
Join Date: Apr 2005
Posts: 262
I used to think I knew better than the factory. After 40 years of working on cars, I'm sure they know better than me, 99 times out of 100. So I go by the factory recommendations. Torque the bolts to factory specs, don't put anything on the gasket unless they say to, and don't use any loctite or other substance unless they did or unless they say to.
Reply With Quote
  #9  
Old 05-03-2005, 10:55 PM
jacrouch's Avatar
Registered User
 
Join Date: Jan 2005
Location: Virginia Beach, VA
Posts: 195
wow...i screwed up bigtime

when i took the pan off, i found the gasket split in several places, and the pan itself was bent to hell and back where the bolt heads meet the pan new gasket was only 5 bucks; the pan, on the other hand...$83 used a bolt driver and tightened as hard as i could with that (per my mechanic's reccommendation...he said it's impossible to overtighten using a bolt driver) so far no leaks...
__________________
1985 300D Turbo "Eunis"
Reply With Quote
Old 05-03-2005, 10:55 PM
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 Off
Trackbacks are On
Pingbacks are On
Refbacks are On


Similar Threads
Thread Thread Starter Forum Replies Last Post
1999 S500 with 722.6 Automatic Transmission Filled for life? MBD Tech Help 29 07-30-2011 11:51 AM
Oil Pan Replacement on a 79 300 CD JPL Diesel Discussion 1 07-11-2001 07:56 AM
Oil Pan Replacement on a 79 300 CD JPL Tech Help 2 07-10-2001 03:50 PM
transmission pan leak benzat Tech Help 10 04-23-2001 06:20 PM
Long Bolts on Aluminum Wheels JoshMB Wheels & Tires 2 03-02-2001 04:01 PM


All times are GMT -4. The time now is 08:12 PM.


Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2014, 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