Author Topic: M127.982 tach seal  (Read 1937 times)

MarkCan

  • Full Member
  • Silver
  • ****
  • Canada, Ontario, Mississauga
  • Posts: 256
M127.982 tach seal
« on: July 14, 2021, 14:23:55 »
Quick question here, on the tach output body on the engine there is a plastic looking seal under the washer. Can it be replaced with the suitable o-ring? See attached pics;
I purchased the full set of gaskets and washers but this one isn’t there.

stickandrudderman

  • Vendor
  • Platinum
  • ******
  • United Kingdom, England, Richmond
  • Posts: 2798
    • http://www.colinferns.com
Re: M127.982 tach seal
« Reply #1 on: July 14, 2021, 15:28:46 »
It's so easy to replace that you can just try your luck!
Less easy is the oil seal (007997734602) inside that often gets overlooked.
« Last Edit: July 14, 2021, 15:34:17 by stickandrudderman »

MarkCan

  • Full Member
  • Silver
  • ****
  • Canada, Ontario, Mississauga
  • Posts: 256
Re: M127.982 tach seal
« Reply #2 on: July 15, 2021, 02:21:45 »
Are you referring to the position #162 bellow?
That is another one that was not in my package. I'll add that to my list. The main thing is, I still be able to continue with the engine build.
Thank you

Charles 230SL

  • Full Member
  • Gold
  • *****
  • USA, GA, Griffin
  • Posts: 652
  • 64 230SL
Re: M127.982 tach seal
« Reply #3 on: July 15, 2021, 11:49:06 »
..Are you referring to the position #162 bellow?..
That's the one - there's a good discussion at: https://www.sl113.org/forums/index.php?topic=32589.msg237099#msg237099, and a picture of the seal here: https://www.authenticclassics.com/Seal-Ring-for-Mercedes-Speedometer-Drive-p/auth-008887.htm
 
I replaced both the Tach seal O-Ring (#133) and the Oil Seal (#162) several years ago. Pictures below are my old one and two new ones.
« Last Edit: July 15, 2021, 11:57:44 by Charles 230SL »

stickandrudderman

  • Vendor
  • Platinum
  • ******
  • United Kingdom, England, Richmond
  • Posts: 2798
    • http://www.colinferns.com
Re: M127.982 tach seal
« Reply #4 on: July 15, 2021, 12:40:31 »
Are you referring to the position #162 bellow?
That is another one that was not in my package. I'll add that to my list. The main thing is, I still be able to continue with the engine build.
Thank you
Yes, 162.
you're welcome!

MarkCan

  • Full Member
  • Silver
  • ****
  • Canada, Ontario, Mississauga
  • Posts: 256
Re: M127.982 tach seal
« Reply #5 on: July 17, 2021, 01:24:55 »
Kudos to Dave at my local MB dealer (Mississauga, Ontario, Canada). He came through for me again. Got the o-ring and the seal. I picked it up today and will install tomorrow.
Than I’ll flip the motor, give one last look over everything and put the oil pan back on the block. I think it’s time to start a new thread.🤔