Author Topic: Reverse band adjustment  (Read 2343 times)

Lori

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  • 1968 280SL (US)
Reverse band adjustment
« on: March 02, 2025, 20:15:31 »
About 2 weeks ago, my car had a little shudder in reverse and then it gave out altogether.  Shifting tor reverse raised the rpm quite a bit and the car will not move when accelerator is pressed.  I found info in the tech manual on adjusting the reverse band bolt.  The 22mm nut loosened easily but I cannot get the 10mm bolt to move in either direction.  It seems someone has adjusted it before as the bolt is somewhat rounded.
Does this bolt seem to be out way too far and any suggestions that hopefully don't require draining the transmission fluid that I just recently changed.
Lori
1968 280SL (US)

ja17

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Re: Reverse band adjustment
« Reply #1 on: March 03, 2025, 05:27:45 »
See if you can get a good 6 point box end wrench or a 6 point socket on it and try to loosen it first. Spray it down with penetrant be fore screwing it back it for adjustment. You probably do not have to take it all the way out.
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

stickandrudderman

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Re: Reverse band adjustment
« Reply #2 on: March 03, 2025, 09:40:23 »
In my experience you're going to need to rebuild the transmission.

ja17

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Re: Reverse band adjustment
« Reply #3 on: March 04, 2025, 05:28:17 »
"In my experience you're going to need to rebuild the transmission."  Possibly so Stick. Still good to check the easy and least expensive things first. If the adjustment doesn't work remove the transmission pan to see if you have any parts or debris in the pan.
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

Lori

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  • 1968 280SL (US)
Re: Reverse band adjustment
« Reply #4 on: March 07, 2025, 18:25:12 »
I drained the fluid and removed the pan and dipstick/fill tube.  No debris in the pan.  But the bolt will not move in either direction.  I am scheduling professional help to look at and probably remove the trans for rebuild. 
Lori
1968 280SL (US)

Lori

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Re: Reverse band adjustment
« Reply #5 on: April 25, 2025, 22:44:50 »
Pedro @Mobil.Werks (also a fellow pagoda group member) came over and got the reverse band bolt removed.  It had a lot of corrosion in the threads.  He found a replacement and installed it today and I am back in business!  NO REBUILD NEEDED - WHOO HOO!!
 
Lori
1968 280SL (US)

Mike Hughes

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Re: Reverse band adjustment
« Reply #6 on: April 25, 2025, 23:22:22 »
Best possible outcome!
- Mike Hughes  -ô¿ô-
  1966 230SL Auto P/S
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BobH

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Re: Reverse band adjustment
« Reply #7 on: April 26, 2025, 07:30:07 »
That is really good news

I'm sure many automatic owners were hoping it wasn't too serious
February 1965 230SL Automatic
UK delivered RHD
Papyrus white, blue hard top & hub caps
Blue soft top
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TJMart

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Re: Reverse band adjustment
« Reply #8 on: April 29, 2025, 20:13:06 »
Great News Lori!

Tony
1970 280SL, 4 Speed

 

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