Author Topic: Input Shaft Seal - manual trans  (Read 430 times)

kampala

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Input Shaft Seal - manual trans
« on: August 23, 2025, 19:50:54 »
Need some advice.  I have read the difficulty with installing the input shaft seal and plan to make the hole-saw tool or the pvc pipe tool to install.   
 
How can I remove the seal?   

I have this tool to help but no luck.
250sl - later - manual
280sl - 1971 - Auto - LSD

ja17

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Re: Input Shaft Seal - manual trans
« Reply #1 on: August 26, 2025, 05:49:19 »
Take a flat nose round drift (about a 1/4" diameter) and drive it inward at one spot on the seal. it will, after a few taps deform enough to easily be removed with pliers or hook tool.
Joe Alexander
Blacklick, Ohio
1969 Dark Olive 280SL
2002 ML55 AMG (tow vehicle)
2002 SLK32 AMG (350 hp)
1982 300TD Wagon turbo 4spd.
1963 404 Mercedes Unimog (Swedish Army)
1989 flu419 Mercedes Unimog (US Army)
1998 E430
1974 450SLC Rally
1965 220SE Finback

kampala

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Re: Input Shaft Seal - manual trans
« Reply #2 on: August 26, 2025, 14:28:42 »
Joe,

Appreciated.   It worked.

Thanks much. 

Now to get the new one in!
250sl - later - manual
280sl - 1971 - Auto - LSD

ja17

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Re: Input Shaft Seal - manual trans
« Reply #3 on: Today at 04:27:35 »
The factory had a special tool. I found a hole saw just the right diameter then ground the teeth off and used it to drive in the new seal.
Joe Alexander
Blacklick, Ohio
1969 Dark Olive 280SL
2002 ML55 AMG (tow vehicle)
2002 SLK32 AMG (350 hp)
1982 300TD Wagon turbo 4spd.
1963 404 Mercedes Unimog (Swedish Army)
1989 flu419 Mercedes Unimog (US Army)
1998 E430
1974 450SLC Rally
1965 220SE Finback

Benz Dr.

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Re: Input Shaft Seal - manual trans
« Reply #4 on: Today at 04:51:21 »
The factory had a special tool. I found a hole saw just the right diameter then ground the teeth off and used it to drive in the new seal.

I made one on a lathe knowing I would use it many times. It was a good decision.

I use a bit of sealer on the metal portion of the seal during installation.
1966 230SL 5 speed, LSD, header pipes, 300SE distributor, ported, polished and balanced, AKA  ''The Red Rocket ''
Dan Caron's SL Barn
1966 230SL 5 speed
1970  3.5 Coupe
1961  190SL
1985   300CD  Turbo Coupe
1981  300SD
2013  GMC  Sierra
1965  230SL
1967 250SL
1970 280SL
1990 560SEC

 

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