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Changing the gear shifter bushings for an automatic

Started by nathan, 16 October 2021, 04:50 AM

nathan

I made a video on changing the bushings on my 6.9 shifter.  My car wasn't reliably starting and I suspect with tis much play, the neutral safety switch was not engaging.  After I did it, it seemed to start most times, but still occasionally not?! Im not sure why as its clearly made a difference.  Could my NSS still be knackered?

https://youtu.be/gofVgnDkXCA
6.9 79 #6436
6.9 79 #6290
6.9 79 #6181
6.9 78 #4764
6.9 77 #3096
6.9 76 #1741
6.9 76 #0902
6.9 75 #0018

revilla

Nice video.
The bushings must be changed to improve the play and the non-start situation. Well done. As it improved but the problem is still present, the next step is the NSS.
I went through this with a couple of W116s a few years back. Problem hasn't reoccurred since.
Here's what I did. Sorry for the lack of details in the explanations/pictures. But I'm confident if you decide to fix the guts of the NSS you'll see immediately  once disassembled how it works and how to fix it.

https://forum.w116.org/mechanicals/neutral-safety-sw-intermittent-reverse-lights/msg122987/?topicseen#msg122987

Robert
W116 1977 280SEL & 1979 280SE

TNNBENZ

Thank you..........Have not seen video yet but I already know will have to replace mine. Hope you did a good vid...
Neglected ~ Rescued ~ 1977 450SEL 4.5L  U.S.A. ver.
Project of Compassion ~ Respect
Silver Green Metallic / Toast
Left Hand Drive
Sliding Roof

daantjie

Great video!  Well shot and narrated indeed.  One small tip on the lube, don't use Vaseline on any rubber/plastic part as it's petroleum based it will eat the bits over time.  I use Permatex Dialectric grease for all these jobbies, great stuff.
Daniel
1977 450 SEL 6.9 - Astralsilber

TNNBENZ

Quote from: daantjie on 16 October 2021, 09:52 AM
Great video!  Well shot and narrated indeed.  One small tip on the lube, don't use Vaseline on any rubber/plastic part as it's petroleum based it will eat the bits over time.  I use Permatex Dialectric grease for all these hobbies, great stuff.
This is debatable.  From what I understand, it depends on what kind of rubber.  The newer rubbers as for oil ring seals appears to be ok. The rest I do not know  ??? Plastic I forgot........ Have that info in a carburetor rebuild book. Will look later maybe........

Neglected ~ Rescued ~ 1977 450SEL 4.5L  U.S.A. ver.
Project of Compassion ~ Respect
Silver Green Metallic / Toast
Left Hand Drive
Sliding Roof

UTn_boy

No lubrication is required on any of the shift linkage bushings, nor did they leave the factory with any. 
1966 250se coupe`, black/dark green leather
1970 600 midnight blue/parchment leather
1971 300sel 6.3, papyrus white/dark red leather
1971 280sel Black/black leather
1973 300sel 4.5, silver blue metallic/blue leather
1979 450sel 516 red/bamboo

nathan

Cheers guys,

I wasn't sure on the vaseline Daan, I put only the smallest bit on, it just didnt feel right ramming that thing on!
I bought the tool on eBay, I wasn't going to give money to KB.  I wouldn't mind, but the fact he wont even show you what to do without first purchasing the tool I thought was average. anyway...

Thanks a lot Revilla.  I only tried the car a few times and it did start once, but started the next turn.  Im hoping its not buggered but it is the next step for sure.  In your pics, I can see what the bent bit was though?  When I did the transmission fluid change a couple of months ago, I noticed my plastic housing for the wiring was cracked and it could simply be a jiggly wire.  I didnt pay too much attention at the time. 

For the knowledgeable ones.  Is the NSS the same on all 722 or 116s of the time? can I use one off other MBs?  If not, can I still buy them new and what is the part number for a 6.9 NSS.
Finally, in removing it, does oil come raining down when you take it off?!

I do have three spare transmissions from 6.9s but Im not sure how you would test the NSS?

Regards
Nathan
6.9 79 #6436
6.9 79 #6290
6.9 79 #6181
6.9 78 #4764
6.9 77 #3096
6.9 76 #1741
6.9 76 #0902
6.9 75 #0018

ptashek

A0005454606 is listed as compatible with all 722.00x transmissions, with note:

QuoteFROM TRANSMISSION
001 006210
002 020641
004 026591 ALSO INSTALLED ON 025741-025753
1993 "Pearl Blue" W124 280TE
1988 "Arctic White" W124 200T
1979 "Icon Gold" W116 450SE

robertd

116   1978 450SEL 6.9 #  4848
116   1979 450SEL  6.9 # 5884
116   1979 450SEL  6.9 # 6225  SOLD
116   1978 450SEL  6.9 # 5128  SOLD
116   1979 450SEL  6.9 # 5884  SOLD
116   1974 450SEL  DJet

ekipe

What a coincidence, I have just made this job day before yesterday. In my case, one of the big bushings was completely missing. I have used some grease tho, one kind that doesn't react with plastic. Decided to do that because the 2 pins were very rusty and gave me hell to disassemble them. But after I got it, I spent a good amount of time sandpapering them until they come back together effortlessly, and hence the grease to prevent this from happening again.

Great video

johnnyw116

Did mine last week i had some play in the selector so it couldnt start in P and the parking pawl wasnt working either but it started in neutral , i have only replaced the bushing on the gearbox because i have a column shifter and i didnt see any other bushings in the limited time i had that day , but the problem is solved with this one bushing , but the local MB dealership gave me 2 bushings and i ordered it with the VIN number , i have more to do on the car so the next time i look iff it has a second bushing

greetings John   
JohnnyW116

TNNBENZ

#11
 Revilla
Yes I totally agree with you about Uncle Kent... You said :  "I wasn't going to give money to KB.  I wouldn't mind, but the fact he wont even show you what to do without first purchasing the tool I thought was average. "

Yes this is so very frustrating & annoying  >:(  >:(  >:( >:( .   
The man is a big help, & taught me a lot.  He has caused me lots of confusion whether to accept his eagerness to make money by teasing you with short video to then entice you to pay for more help or sell you a tool.  At times I want to support him but his methods seem hypocritical.  I just realized now that it would be like members here charging me for an answer to my threads posts.  :o  :-\  :'(

I do not know how this message got sent in this format. It is very confusing to me what I did wrong.  It has worked before.....I tried to include his quote & I had to edit almost all of this because it was a mess.
Pardon me for confusing you  :o  It has been difficult to send this message..............ha............lol........If u only knew...........ha  ;D
Neglected ~ Rescued ~ 1977 450SEL 4.5L  U.S.A. ver.
Project of Compassion ~ Respect
Silver Green Metallic / Toast
Left Hand Drive
Sliding Roof

celberg

Quote from: johnnyw116 on 20 October 2021, 03:28 AM
Did mine last week i had some play in the selector so it couldnt start in P and the parking pawl wasnt working either but it started in neutral , i have only replaced the bushing on the gearbox because i have a column shifter and i didnt see any other bushings in the limited time i had that day , but the problem is solved with this one bushing , but the local MB dealership gave me 2 bushings and i ordered it with the VIN number , i have more to do on the car so the next time i look iff it has a second bushing

greetings John   

Did mine with column shifter two weeks ago. There is one bushing in each end of the strut. And also a small bearing that cost a fortune.
350SL 1973
350SE 1975
SL500 1996

johnnyw116

Quote from: celberg on 20 October 2021, 12:45 PM
Quote from: johnnyw116 on 20 October 2021, 03:28 AM
Did mine last week i had some play in the selector so it couldnt start in P and the parking pawl wasnt working either but it started in neutral , i have only replaced the bushing on the gearbox because i have a column shifter and i didnt see any other bushings in the limited time i had that day , but the problem is solved with this one bushing , but the local MB dealership gave me 2 bushings and i ordered it with the VIN number , i have more to do on the car so the next time i look iff it has a second bushing

greetings John   

Did mine with column shifter two weeks ago. There is one bushing in each end of the strut. And also a small bearing that cost a fortune.
Ok thanks , were is this bearing located ?  i did the repair on the garagefloor so i didnt had a clear view   
JohnnyW116

celberg

Search for A002 981 02 10. If it's loose you can take some hard bushing material, drill a 9,8 mm hole and rasp the outher side to fit the hole. Odd explanation, but you'll get it when you see it. You save at least €150!
350SL 1973
350SE 1975
SL500 1996