Author Topic: 4 Speed gear box removal reseal and anything else needing replacement  (Read 5910 times)

Pinder

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Re: 4 Speed gear box removal reseal and anything else needing replacement
« Reply #50 on: September 25, 2024, 18:17:37 »
I finally put everything back together and re  installed the gearbox. I had to disconnect the drive shaft from the diff in order to be able to re install it. First short drive went well, no issues noted. It was a little tricky to lift the box in place using a regular floor jack.
1970 280 SL Light Ivory DB 670. 4 Speed manual shift no AC Limited Slip Diff.
1997 Corvette C5 Silver. automatic
2015 BMW 320i xdrive
2021 Mercedes GLS450 Silver

BobH

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Re: 4 Speed gear box removal reseal and anything else needing replacement
« Reply #51 on: September 25, 2024, 18:22:54 »
Hello Pinder, well done!  i've thoroughly enjoyed reading this post, so glad to see such a good result
February 1965 230SL Automatic
UK delivered RHD
Papyrus white, blue hard top & hub caps
Blue soft top
Blue leather

Pinder

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Re: 4 Speed gear box removal reseal and anything else needing replacement
« Reply #52 on: September 25, 2024, 19:45:44 »
Thanks Bob.

I could not have done it without the expert advice I received along the way.

I made a few mistakes along the way but was able to correct and proceed foreword.

Along the journey I took the opportunity to bead blast the aluminum parts and paint the cast iron box and polish up the shifter rods and protect them with some clear coat. I also reviewed the shifter bushings even they I had replaced before as they are cheap.

In addition to resolving the gearbox leak it feels good knowing I replaced the broken shaft key and replaced the seals.

It really looks clean under the car now . My next improvement to the car is replacing the exhaust system from time valve. I put my order in but there is a few weeks delay before they can start making my exhaust system.

I’ve enjoyed working on this gearbox project.
1970 280 SL Light Ivory DB 670. 4 Speed manual shift no AC Limited Slip Diff.
1997 Corvette C5 Silver. automatic
2015 BMW 320i xdrive
2021 Mercedes GLS450 Silver

Pinder

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Re: 4 Speed gear box removal reseal and anything else needing replacement
« Reply #53 on: September 25, 2024, 19:50:28 »
Picture of gearbox with shifter installed to test out ability to shift into all gears.

I also prefilled the gearbox before installing it into the car to save the hassle of using the fill hole.

Also I tested the 2 switches worked (that continuity works when they are engaged.
1970 280 SL Light Ivory DB 670. 4 Speed manual shift no AC Limited Slip Diff.
1997 Corvette C5 Silver. automatic
2015 BMW 320i xdrive
2021 Mercedes GLS450 Silver

Pinder

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Re: 4 Speed gear box removal reseal and anything else needing replacement
« Reply #54 on: September 27, 2024, 14:51:54 »
took the car out last night for a 30 min drive and drive it hard. shifted great. This morning I inspected for any kind of leaks and happy to report zero leaks. For the first time in 9 years, I have an oil free garage floor. My two main leaks were from the power steering Box and the gearbox. Both now resolved.
1970 280 SL Light Ivory DB 670. 4 Speed manual shift no AC Limited Slip Diff.
1997 Corvette C5 Silver. automatic
2015 BMW 320i xdrive
2021 Mercedes GLS450 Silver

ja17

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Re: 4 Speed gear box removal reseal and anything else needing replacement
« Reply #55 on: September 29, 2024, 04:03:42 »
Chasing leaks on an old vintage car can be frustrating and expensive. Eventually new ones or the old ones can return over time. Hopefully not for a long time!! Great Job!
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